Worst air pollution Dazhou, today and tomorrow
Today (17 August): Air quality in Dazhou is poor. AQI and O3 are poor; PM2.5 and HCHO are fair; NO2 and PM1 are medium; PM10, SO2, and CO are good. Pollution peaks around 1:00 PM (O3: 60.8/100).
Tomorrow (18 August 2026): Air quality in Dazhou is fair. AQI improves to medium; PM2.5 decreases to good; NO2 increases to fair; O3 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 57.5/100). 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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Dazhou's air quality reflects the Sichuan Basin's eastern Qu River valley position, with vehicle traffic on surrounding expressways and the natural gas, coal, and chemical corridor contributing local sources. The Sichuan Basin's topographic enclosure creates concentration under winter inversions, while the natural gas operations and coal mining add distinctive industrial emissions and Dazhou generally maintains moderate Sichuan Basin eastern corridor readings throughout the year.
Today - 17 August | Pollution peaks at 13:00
AQI:
Poor
60.8/100
PM2.5 (fine particles):
Fair
36.8/100
PM10 (coarse particles):
Good
11.0/100
NO2 (nitrogen dioxide):
Medium
42.2/100
O3 (ozone):
Poor
60.8/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
23.2/100
PM1 (ultrafine particles):
Medium
41.7/100
Levels show the poorest local air quality during the day
Tomorrow - 18 August | Pollution peaks at 14:00
AQI:
Medium
57.5/100
PM2.5 (fine particles):
Good
19.4/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
20.1/100
O3 (ozone):
Medium
57.5/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
20.5/100
PM1 (ultrafine particles):
Fair
25.3/100
Frequently Asked Questions
Is air quality bad in Dazhou right now?
On 17 August 2026, overall air quality in Dazhou is poor. AQI is the main air quality indicator at 60.8/100. Pollution peaks around 1:00 PM (O3: 60.8/100).
Will air quality be worse tomorrow in Dazhou?
On 18 August 2026, air quality conditions in Dazhou will be better than today, with PM1 forecast at fair at 25.3/100. Pollution peaks around 2:00 PM (O3: 57.5/100).
When is air pollution at its worst in Dazhou?
Dazhou usually sees its poorest air quality when vehicle traffic, petrochemical and refining operations, along with quarrying activity coincide with periods when calm, stagnant conditions settle in the surrounding valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. These wind events can carry dust in from the surrounding arid landscape.
Are air quality levels in Dazhou 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: 17 August 2026 at 08:27 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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