Worst air pollution Chongqing, today and tomorrow
Today (10 August): Air quality in Chongqing is very poor. AQI and O3 are very poor; NO2 is poor; PM10 and SO2 are fair; PM2.5 and PM1 are medium; CO and HCHO are good. Pollution peaks around 2:00 PM (O3: 100/100).
Tomorrow (11 August 2026): Air quality in Chongqing is very poor. HCHO increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 90.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Chongqing's air quality reflects the Sichuan Basin's near-complete topographic enclosure between the Daba and Wuling mountain ranges at 244 metres, with vehicle traffic on the Inner Ring Expressway and the extraordinary manufacturing, chemical, and automotive corridor contributing local sources. The basin's persistent cloudiness and calm conditions create extended pollution trapping, while the Yangtze and Jialing river valley humidity compounds the challenge and Chongqing maintains among China's more topographically challenged inland metropolitan environments.
Today - 10 August | Pollution peaks at 14:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Medium
48.6/100
PM10 (coarse particles):
Fair
21.4/100
NO2 (nitrogen dioxide):
Poor
75.5/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Fair
31.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
18.5/100
PM1 (ultrafine particles):
Medium
55.0/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 13:00
AQI:
Very poor
90.1/100
PM2.5 (fine particles):
Medium
47.3/100
PM10 (coarse particles):
Fair
20.1/100
NO2 (nitrogen dioxide):
Poor
76.1/100
O3 (ozone):
Very poor
90.1/100
SO2 (sulfur dioxide):
Fair
31.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
20.2/100
PM1 (ultrafine particles):
Medium
53.1/100
Frequently Asked Questions
Is air quality bad in Chongqing right now?
On 10 August 2026, overall air quality in Chongqing is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 2:00 PM (O3: 100/100).
Will air quality be worse tomorrow in Chongqing?
On 11 August 2026, air quality conditions in Chongqing will be similar to today, with AQI forecast at very poor at 90.1/100. Pollution peaks around 1:00 PM (O3: 90.1/100).
When is air pollution at its worst in Chongqing?
Air quality in Chongqing tends to be worse when traffic on the surrounding roads, petrochemical and refining operations, and light manufacturing build up and still air allows pollutants to build up. Day-to-day conditions here depend heavily on the weather. Background emissions and local weather both play a role in day-to-day changes.
Are air quality levels in Chongqing based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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