Weather in October. October, like September, is another refreshing autumn month in Philadelphia, New York, with temperature in the range of an average high of 55.9°F and an average low of 43.3°F. The move into October indicates a reduction in the average high-temperature, down from September's agreeable 69.1°F to a moderate 55.9°F.Weather in October. October, like September, is another refreshing autumn month in Philadelphia, New York, with temperature in the range of an average high of 55.9°F and an average low of 43.3°F. The move into October indicates a reduction in the average high-temperature, down from September's agreeable 69.1°F to a moderate 55.9°F.Jan 10, 2023 · 2023 Philadelphia Weather Extremes; Highest temperature: 95 °F: July 13: Lowest temperature: 15 °F: February 4: Highest daily low: 79 °F: July 14: Lowest daily high: 28 °F: February 4: Most daily precipitation: 1.7 inches: July 16: Most daily snow: 0.3 inches: February 1: Total annual precipitation: 24.8 inches-Total annual snow: 0.3 inches- Number of days in November when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. 5. 2022. 10.Wed 9/13. 80° /65°. 9%. Brilliant sunshine and very warm. RealFeel® 79°. RealFeel Shade™ 76°. Max UV Index 6 High. Wind NNW 13 mph. Looking back at the annual figures on the IQAir website, it can be seen that Philadelphia’s air quality remains fairly stable. In 2017 it was 9.6 µg/m³ followed by 9.3 µg/m³ in 2018. 2019 saw a slightly worse figure of 10.5 µg/m³ before it improved again in 2020 with a 9.5 µg/m³ reading. Current weather in Philadelphia, PA. Check current conditions in Philadelphia, PA with radar, hourly, and more.September and October will unfurl the beauty of Autumn leaves and foliage if you decide to visit the city during this time. March-May: This is the best time to visit Philadelphia as it is the spring season and the temperatures range from the mid-30s and lower 50s in March and the mid-50s and lower 70s in May. Accommodation prices unusually rise ...The average temperature in Philadelphia in May for a typical day ranges from a high of 73°F (23°C) to a low of 53°F (12°C). Some would describe it as mildly cool with a gentle breeze. For comparison, the hottest month in Philadelphia, July, has days with highs of 88°F (31°C) and lows of 68°F (20°C). The coldest month, January has days ...Tonight 27 Aug Philadelphia. Partly cloudy in the Evening, then becoming mostly cloudy. Humid with Lows in the upper 60s. Northeast Winds around 5 Mph. 1-Day 3-Day 5-Day. Temperature. Sun 27 Aug Mon 28 Aug Tue 29 Aug Wed 30 Aug Thu 31 Aug Fri 1 Sep Sat 2 Sep. 100 °F 80 °F 60 °F. Graph Plots Open in Graphs.Jun 29, 2021 · The average temperature for the city in the summer of 1970 was 75.09 degrees, while last year’s summer average was 78.39. Overall, the average summer temperature in Philadelphia has gotten 3 degrees warmer. Perhaps worse, average summer nights have warmed by 3.8 degrees. The rising heat especially affects economically stressed neighborhoods ... Philadelphia News, Local News, Weather, Traffic, Entertainment, and Breaking NewsPhiladelphia International Airport Temperature History 2022. The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.The average wind speed is 12 kph (7 mph). July, the hottest month of the year, is generally a warm to hot month. The average temperature is of 25.6 °C (78 °F), with a minimum of 20 °C (68.1 °F) and a maximum of 31.2 °C (88.1 °F). On the coldest nights of the month, the temperature usually drops to around 15 °C (59 °F). Want a minute-by-minute forecast? MSN Weather tracks it all, from precipitation predictions to severe weather warnings, air quality updates, and even wildfire alerts. With a maximum temperature of 96.8°F, Tuesday and Wednesday will be the hottest days in Philadelphia; today is the coldest day, with a maximum temperature of 78.8°F. Taking the humidity into consideration, the maximum feel-like temperature may increase considerably and vary between 78.8°F and an extremely hot 109.4°F .See a list of all of the Official Weather Advisories, Warnings, and Severe Weather Alerts for Philadelphia, PA.Hourly Forecast for Today, Tuesday 09/05. A few clouds. Low around 75F. Winds NNW at 5 to 10 mph. Mostly sunny skies. A stray shower or thunderstorm is possible. High 96F. Winds NNW at 5 to 10 mph.397,762. 0. Deaths. 5,627. 0. New Cases Per Day. New Deaths Per Day. In Philadelphia County, there were 0 newly reported COVID-19 cases and 0 newly reported COVID-19 deaths on Jul 23, 2023.The current global average concentration of CO 2 in the atmosphere is 421 ppm as of May 2022 (0.04%). [3] This is an increase of 50% since the start of the Industrial Revolution, up from 280 ppm during the 10,000 years prior to the mid-18th century. [4] [3] [5] The increase is due to human activity. [6] Current weather in Philadelphia, MS. Check current conditions in Philadelphia, MS with radar, hourly, and more. The year 2022 was the sixth warmest year since global records began in 1880 at 0.86°C (1.55°F) above the 20th century average of 13.9°C (57.0°F). This value is 0.13°C (0.23°F) less than the record set in 2016 and it is only 0.02°C (0.04°F) higher than the last year's (2021) value, which now ranks as the seventh highest.Feb 6, 2022 · Philadelphia International Airport Temperature History 2022. The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Current weather in Philadelphia, MS. Check current conditions in Philadelphia, MS with radar, hourly, and more.Today’s and tonight’s Philadelphia, PA weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.comSeptember and October will unfurl the beauty of Autumn leaves and foliage if you decide to visit the city during this time. March-May: This is the best time to visit Philadelphia as it is the spring season and the temperatures range from the mid-30s and lower 50s in March and the mid-50s and lower 70s in May. Accommodation prices unusually rise ...Aug 31, 2020 · A temperature gun and hand sanitizer are seen at the front desk of Inborn Tattoo on 3rd Ave. in Brooklyn, New York on Monday, July 6, 2020. Tattoo parlors were allowed to open today as part of New ... No one covers Philadelphia, New Jersey and Delaware weather like 6abc. WPVI covers forecasts, weather maps, alerts, video, street-level weather and more.Jun 24, 2020 · The Philadelphia Energy Authority concluded that more than half of all African-American households experience some form of energy insecurity annually; in the form of unpaid bills, sacrificing basic necessities or simply living with unhealthy temperatures to reduce cost. The Philadelphia Department of Public Health has made great strides in ... Philadelphia is in a humid continental climate zone. This means we experience four distinct seasons, including hot summers and cold winters. Historically, winters have an average temperature of 41.9°F, and summers have an average temperature of 84.5°F (for the years 1961 to 2000). Precipitation is consistent throughout the year, with the CBS News Philadelphia: Local News, Weather & More Jan 30, 2020 ... A summer spike of COVID hospitalizations has now arrived in Philadelphia, just in time for the Labor Day weekend. 2010. 3. -4. Number of days in February when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. Aug 31, 2020 · A temperature gun and hand sanitizer are seen at the front desk of Inborn Tattoo on 3rd Ave. in Brooklyn, New York on Monday, July 6, 2020. Tattoo parlors were allowed to open today as part of New ... Weather today in Philadelphia will be moderate rain. The daytime temperature is going to reach 32.0 °c and the temperature is going to dip to 21.0 °c at night. We expect around 6.6 mm of precipitation to fall, the humidity will be around 75%.2010. 3. -4. Number of days in February when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. Hourly Local Weather Forecast, weather conditions, precipitation, dew point, humidity, wind from Weather.com and The Weather Channel The best time of year to visit Philadelphia in the United States of America. During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 26 degrees Celsius (79°F). When is summer in Philadelphia? The hottest season / summer takes place ...Weather conditions can be closely tied with health-related pains and outdoor activities. See a list of your local health and activity forecasts and recommendations. Wed 9/13. 80° /65°. 9%. Brilliant sunshine and very warm. RealFeel® 79°. RealFeel Shade™ 76°. Max UV Index 6 High. Wind NNW 13 mph.Today 26 Aug Philadelphia. Patchy fog in the morning. Mostly sunny. Hot with Highs in the upper 80s. North Winds 5 to 10 Mph. 1-Day 3-Day 5-Day. Temperature. Sat 26 Aug Sun 27 Aug Mon 28 Aug Tue 29 Aug Wed 30 Aug Thu 31 Aug Fri 1 Sep. 100 °F 80 °F 60 °F. Philadelphia is in a humid continental climate zone. This means we experience four distinct seasons, including hot summers and cold winters. Historically, winters have an average temperature of 41.9°F, and summers have an average temperature of 84.5°F (for the years 1961 to 2000). Precipitation is consistent throughout the year, with thePast Weather in Philadelphia, Pennsylvania, USA — Yesterday and Last 2 Weeks. Time/General. Weather. Time Zone. DST Changes. Sun & Moon. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 70 °F. Clear. Number of days in November when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. 5. 2022. 10. The season sees a gradual uptick in temperature from 49.8°F to 72°F. These months have high levels of relative humidity ranging from 72% to 75% and a decent amount of rainfall. The moderate temperatures partnered with an average of 1.18" to 1.06" of rainfall make the spring both lovely and pleasant.The average temperature in Philadelphia in February for a typical day ranges from a high of 42°F (6°C) to a low of 25°F (-4°C). Some would describe it as really cold with a gentle breeze. For comparison, the hottest month in Philadelphia, July, has days with highs of 88°F (31°C) and lows of 68°F (20°C). The coldest month, January has ...Sun & Moon Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Now 60 °F Clear. Feels Like: 60 °F Forecast: 83 / 57 °F Wind: 3 mph ↑ from North Upcoming 5 hours See more hour-by-hour weather Forecast for the next 48 hours 14 day forecast, day-by-day Hour-by-hour forecast for next week Forecast for the next 2 weeks To watch our latest video forecasts on the go and also receive location-based severe weather alerts, download the FOX 29 Weather Authority app for your mobile device. Philadelphia 7-Day Forecast ... Weather in October. October, like September, is another refreshing autumn month in Philadelphia, New York, with temperature in the range of an average high of 55.9°F and an average low of 43.3°F. The move into October indicates a reduction in the average high-temperature, down from September's agreeable 69.1°F to a moderate 55.9°F.The latest Philadelphia, South Jersey and national news and headlines that matter to you from PhillyVoice.com. Your one-stop news destination. 9/30: Made in Jersey FestivalKnow the percentage of humidity hour by hour in Philadelphia and the humidity prediction for the next few daysBe prepared with the most accurate 10-day forecast for Baltimore, MD with highs, lows, chance of precipitation from The Weather Channel and Weather.comThe Sep rainfall totals ranged from 10-18 inches across much of. central and NE NJ, with 25.98" reported at Paterson. PHL recorded 1.72" of rain on. the 21st, 4.65" on the 22nd, and 3.72" on the 23rd, for a total of 10.09" of rain. The 22nd. and 23rd amounts remain as daily rainfall records.2023 Philadelphia Weather Extremes; Highest temperature: 95 °F: July 13: Lowest temperature: 15 °F: February 4: Highest daily low: 79 °F: July 14: Lowest daily high: 28 °F: February 4: Most daily precipitation: 1.7 inches: July 16: Most daily snow: 0.3 inches: February 1: Total annual precipitation: 24.8 inches-Total annual snow: 0.3 inches-Tonight 24 Aug Philadelphia. Cloudy. A chance of Showers in the Evening, then a chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 60s. South Winds around 10 Mph. Chance of rain 50 percent. 1-Day 3-Day 5-Day. Temperature. Thu 24 Aug Fri 25 Aug Sat 26 Aug Sun 27 Aug Mon 28 Aug Tue 29 Aug Wed 30 Aug. 100 °F 80 °F ... This indicator examines trends in unusual temperatures from several perspectives: Unusually hot summer temperatures and cold winter temperatures nationwide (Figures 1 and 2). The change in the number of days with unusually hot and cold temperatures at individual weather stations (Figures 3 and 4). Changes in record high and low temperatures ...The best time of year to visit Philadelphia in the United States of America. During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 26 degrees Celsius (79°F). When is summer in Philadelphia? The hottest season / summer takes place ...Aug 24, 2023 · A graph and an animated time series showing the change in global surface temperature relative to 1951-1980 average temperatures. The year 2020 ties with 2016 as the warmest on record. Vital Signs of the Planet: Global Climate Change and Global Warming. Pennsylvania, United States. Daily high temperatures are around 86°F, rarely falling below 77°F or exceeding 94°F. The highest daily average high temperature is 87°F on July 21. Daily low temperatures increase by 2°F, from 67°F to 70°F, rarely falling below 60°F or exceeding 76°F. The highest daily average low temperature is 70°F on ... Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Philadelphia, PennsylvaniaThis report shows the past weather for Philadelphia, providing a weather history for April 2022. It features all historical weather data series we have available, including the Philadelphia temperature history for April 2022. You can drill down from year to month and even day level reports by clicking on the graphs.Number of days in November when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. 5. 2022. 10. Hour-by-Hour Forecast for Philadelphia, Pennsylvania, USA. Time Zone. DST Changes. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 75 °F. Sunny. (Weather station: Philadelphia International Airport, USA). See more current weather.Current weather in Philadelphia, MS. Check current conditions in Philadelphia, MS with radar, hourly, and more. The best time of year to visit Philadelphia in the United States of America. During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 26 degrees Celsius (79°F). When is summer in Philadelphia? The hottest season / summer takes place ...The average temperature in Philadelphia in February for a typical day ranges from a high of 42°F (6°C) to a low of 25°F (-4°C). Some would describe it as really cold with a gentle breeze. For comparison, the hottest month in Philadelphia, July, has days with highs of 88°F (31°C) and lows of 68°F (20°C). The coldest month, January has ...The average temperature in Philadelphia in July for a typical day ranges from a high of 88°F (31°C) to a low of 68°F (20°C). Some would describe it as very warm, sticky. For comparison, the hottest month in Philadelphia, July, has days with highs of 88°F (31°C) and lows of 68°F (20°C). The coldest month, January has days with highs of ...Philadelphia, commonly referred to as Philly, is the most populous city in the Commonwealth of Pennsylvania [12] and the second-most populous city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. It is one of the most historically significant cities in the United States and served as the nation's capital until ...The Sep rainfall totals ranged from 10-18 inches across much of. central and NE NJ, with 25.98" reported at Paterson. PHL recorded 1.72" of rain on. the 21st, 4.65" on the 22nd, and 3.72" on the 23rd, for a total of 10.09" of rain. The 22nd. and 23rd amounts remain as daily rainfall records.Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Philadelphia, PennsylvaniaCloudy today with a high of 83 °F (28.3 °C) and a low of 64 °F (17.8 °C). There is a 51% chance of precipitation. Thunderstorms today with a high of 83 °F (28.3 °C) and a low of 62 °F (16.7 ...Jun 29, 2021 · The average temperature for the city in the summer of 1970 was 75.09 degrees, while last year’s summer average was 78.39. Overall, the average summer temperature in Philadelphia has gotten 3 degrees warmer. Perhaps worse, average summer nights have warmed by 3.8 degrees. The rising heat especially affects economically stressed neighborhoods ... Aug 26, 2023 · Current condition and temperature - Philadelphia, NY. In Philadelphia, currently, clouds are the highlight of the sky. The temperature is a comfortable 62.6°F, while the felt air temperature is a similar 60.8°F. The current temperature is a few degrees off the minimum of 53.6°F. Climate in Philadelphia, Pennsylvania. Philadelphia, PA enjoys a humid subtropical climate with warm summers and cold winters. The average high temperature throughout the year is around 73°F (23°C) while the average low temperature is around 50°F (10°C). Precipitation is fairly common in Philadelphia with an average of around 3.8 inches per ...To watch our latest video forecasts on the go and also receive location-based severe weather alerts, download the FOX 29 Weather Authority app for your mobile device. Philadelphia 7-Day Forecast ... Weather today in Philadelphia will be moderate rain. The daytime temperature is going to reach 32.0 °c and the temperature is going to dip to 21.0 °c at night. We expect around 6.6 mm of precipitation to fall, the humidity will be around 75%. Check out the Philadelphia, PA WinterCast. Forecasts the expected snowfall amount, snow accumulation, and with snowfall radar.Tonight 27 Aug Philadelphia. Partly cloudy in the Evening, then becoming mostly cloudy. Humid with Lows in the upper 60s. Northeast Winds around 5 Mph. 1-Day 3-Day 5-Day. Temperature. Sun 27 Aug Mon 28 Aug Tue 29 Aug Wed 30 Aug Thu 31 Aug Fri 1 Sep Sat 2 Sep. 100 °F 80 °F 60 °F. Graph Plots Open in Graphs. Aug 31, 2020 · A temperature gun and hand sanitizer are seen at the front desk of Inborn Tattoo on 3rd Ave. in Brooklyn, New York on Monday, July 6, 2020. Tattoo parlors were allowed to open today as part of New ... TONIGHT’S WEATHER FORECAST. 9/5. 67° Lo. RealFeel® 66°. Clear, warm and humid. The current global average concentration of CO 2 in the atmosphere is 421 ppm as of May 2022 (0.04%). [3] This is an increase of 50% since the start of the Industrial Revolution, up from 280 ppm during the 10,000 years prior to the mid-18th century. [4] [3] [5] The increase is due to human activity. [6] Cloudy today with a high of 83 °F (28.3 °C) and a low of 64 °F (17.8 °C). There is a 51% chance of precipitation. Thunderstorms today with a high of 83 °F (28.3 °C) and a low of 62 °F (16.7 ...Current weather in Philadelphia, NY. Check current conditions in Philadelphia, NY with radar, hourly, and more. Heat Index Formula. This calculator uses the following basic formula to calculate the heat index: HI (Heat Index, °F) = C 1 + C 2 T + C 3 RH + C 4 T RH + C 5 T 2 + C 6 RH 2 + C 7 T 2 RH + C 8 T RH 2 + C 9 T 2 RH 2 + CF. Where: HI is the heat index (°F), T is the air temperature in Fahrenheit (°F), RH is the relative humidity (%), The latest Philadelphia, South Jersey and national news and headlines that matter to you from PhillyVoice.com. Your one-stop news destination. 9/30: Made in Jersey FestivalHeat Index Formula. This calculator uses the following basic formula to calculate the heat index: HI (Heat Index, °F) = C 1 + C 2 T + C 3 RH + C 4 T RH + C 5 T 2 + C 6 RH 2 + C 7 T 2 RH + C 8 T RH 2 + C 9 T 2 RH 2 + CF. Where: HI is the heat index (°F), T is the air temperature in Fahrenheit (°F), RH is the relative humidity (%), Sun & Moon Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Now 60 °F Clear. Feels Like: 60 °F Forecast: 83 / 57 °F Wind: 3 mph ↑ from North Upcoming 5 hours See more hour-by-hour weather Forecast for the next 48 hours 14 day forecast, day-by-day Hour-by-hour forecast for next week Forecast for the next 2 weeks
Today, cloudy weather is anticipated. Temperatures will oscillate between a moderately hot 78.8°F at their highest and an agreeable 68°F at their lowest. The predicted top temperature will be a couple of degrees lower than the usual August high of 84°F. Sunrise was at 6:01 am and sunset will be at 8:11 pm; the daylight will last for 14h and .... Synology failed to apply the settings
Number of days in November when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. 5. 2022. 10. 397,762. 0. Deaths. 5,627. 0. New Cases Per Day. New Deaths Per Day. In Philadelphia County, there were 0 newly reported COVID-19 cases and 0 newly reported COVID-19 deaths on Jul 23, 2023. The average temperatures are between 69°F and 84°F. You can expect about 3 to 8 days of rain in Philadelphia during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather. Our weather forecast can give you a great sense of what weather to expect in Philadelphia in August 2023.Current weather in Philadelphia, NY. Check current conditions in Philadelphia, NY with radar, hourly, and more.The average temperatures are between 69°F and 84°F. You can expect about 3 to 8 days of rain in Philadelphia during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather. Our weather forecast can give you a great sense of what weather to expect in Philadelphia in August 2023.National Weather Service Philadelphia/Mt Holly 732 Woodlane Rd. Mount Holly, NJ 08060 609-261-6600 Comments? Questions? Please Contact Us. Disclaimer Information QualityBe prepared with the most accurate 10-day forecast for Baltimore, MD with highs, lows, chance of precipitation from The Weather Channel and Weather.comCurrent Weather. 12:52 PM. 79° F. RealFeel® 91°. RealFeel Shade™ 78°. Air Quality Poor. Wind SE 2 mph. Wind Gusts 3 mph. Sunny More Details. Weather conditions can be closely tied with health-related pains and outdoor activities. See a list of your local health and activity forecasts and recommendations. 2010. 3. -4. Number of days in February when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. Open to all Philadelphia residents age 5 and older. To schedule an appointment, call (215) 685-2933. Sep. 6. Event. Walk-in COVID-19 Vaccine Clinic. 8:00 am to 1:00 pm. The average temperature in Philadelphia in April for a typical day ranges from a high of 63°F (17°C) to a low of 41°F (5°C). Some would describe it as moderately chilly with a gentle breeze. For comparison, the hottest month in Philadelphia, July, has days with highs of 88°F (31°C) and lows of 68°F (20°C). The coldest month, January has ... Jan 2, 2020 · For the 15th consecutive year, the official annual average temperature in Philadelphia — 57.3 degrees Fahrenheit — was higher than the city’s 20th-century annual average. In the 21st century, the lone exception to the trend was 2003, when the annual temperature, 54.9, finished in a dead heat with that of the 20th-century average. The average wind speed is 12 kph (7 mph). July, the hottest month of the year, is generally a warm to hot month. The average temperature is of 25.6 °C (78 °F), with a minimum of 20 °C (68.1 °F) and a maximum of 31.2 °C (88.1 °F). On the coldest nights of the month, the temperature usually drops to around 15 °C (59 °F).2010. 3. -4. Number of days in February when the temperature in Philadelphia dropped to 32 or below, or rose to at least 70 degrees Fahrenheit. 32 °F. 0 °C. Year. 70 °F. 21 °C. The current global average concentration of CO 2 in the atmosphere is 421 ppm as of May 2022 (0.04%). [3] This is an increase of 50% since the start of the Industrial Revolution, up from 280 ppm during the 10,000 years prior to the mid-18th century. [4] [3] [5] The increase is due to human activity. [6]The current global average concentration of CO 2 in the atmosphere is 421 ppm as of May 2022 (0.04%). [3] This is an increase of 50% since the start of the Industrial Revolution, up from 280 ppm during the 10,000 years prior to the mid-18th century. [4] [3] [5] The increase is due to human activity. [6] .