Worst air pollution Leshan, today and tomorrow
Today (10 August): Air quality in Leshan is very poor. AQI and O3 are very poor; PM2.5, NO2, HCHO, and PM1 are fair; PM10, SO2, and CO are good. Pollution peaks around 1:00 PM (O3: 85.9/100).
Tomorrow (11 August 2026): Air quality in Leshan is very poor. PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 94.2/100). 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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Leshan's air quality reflects the Sichuan Basin's Dadu River and Min River confluence adjacent to the famous Giant Buddha site, with vehicle traffic on surrounding expressways and the tourism, chemical, and manufacturing corridor contributing local sources. The Sichuan Basin's topographic enclosure creates concentration under winter inversions, while the Giant Buddha sacred site's tourism concentration creates seasonal vehicle peaks and Leshan generally maintains moderate Sichuan Basin provincial readings throughout most of the year.
Today - 10 August | Pollution peaks at 13:00
AQI:
Very poor
85.9/100
PM2.5 (fine particles):
Fair
31.2/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Fair
37.6/100
O3 (ozone):
Very poor
85.9/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
21.5/100
PM1 (ultrafine particles):
Fair
39.4/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 15:00
AQI:
Very poor
94.2/100
PM2.5 (fine particles):
Fair
32.7/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Fair
34.7/100
O3 (ozone):
Very poor
94.2/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
20.9/100
PM1 (ultrafine particles):
Medium
40.4/100
Frequently Asked Questions
Is air quality bad in Leshan right now?
On 10 August 2026, overall air quality in Leshan is very poor. AQI is the main air quality indicator at 85.9/100. Pollution peaks around 1:00 PM (O3: 85.9/100).
Will air quality be worse tomorrow in Leshan?
On 11 August 2026, air quality conditions in Leshan will be similar to today, with AQI forecast at very poor at 94.2/100. Pollution peaks around 3:00 PM (O3: 94.2/100).
When is air pollution at its worst in Leshan?
Leshan usually sees its poorest air quality when traffic emissions, petrochemical and refining operations, together with manufacturing and food processing coincide with periods when the surrounding valley traps air close to the ground. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. This is most pronounced in winter, when inversions are more frequent.
Are air quality levels in Leshan 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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