Worst air pollution Weinan, today and tomorrow
Today (10 August): Air quality in Weinan is poor. AQI and O3 are poor; PM2.5 and PM1 are fair; NO2 is medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 64.5/100).
Tomorrow (11 August 2026): Air quality in Weinan is very poor. AQI worsens to very poor; O3 increases to very poor; PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 84.0/100). 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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Weinan's air quality reflects the Guanzhong Basin's eastern Wei River valley at the Qinling Mountain base, with vehicle traffic on surrounding expressways and the coal mining, chemical, and agricultural corridor contributing local sources. The Guanzhong Basin's topographic enclosure creates concentration under winter inversions, while the Xi'an metropolitan regional background influences the broader corridor and Weinan generally maintains moderate to elevated Guanzhong Basin eastern corridor readings throughout the year.
Today - 10 August | Pollution peaks at 14:00
AQI:
Poor
64.5/100
PM2.5 (fine particles):
Fair
21.5/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Medium
46.1/100
O3 (ozone):
Poor
64.5/100
SO2 (sulfur dioxide):
Good
10.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.8/100
PM1 (ultrafine particles):
Fair
24.8/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 16:00
AQI:
Very poor
84.0/100
PM2.5 (fine particles):
Fair
38.8/100
PM10 (coarse particles):
Good
11.9/100
NO2 (nitrogen dioxide):
Medium
49.8/100
O3 (ozone):
Very poor
84.0/100
SO2 (sulfur dioxide):
Good
18.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.8/100
PM1 (ultrafine particles):
Medium
42.0/100
Frequently Asked Questions
Is air quality bad in Weinan right now?
On 10 August 2026, overall air quality in Weinan is poor. AQI is the main air quality indicator at 64.5/100. Pollution peaks around 2:00 PM (O3: 64.5/100).
Will air quality be worse tomorrow in Weinan?
On 11 August 2026, air quality conditions in Weinan will be worse than today, with AQI forecast at very poor at 84.0/100. Pollution peaks around 4:00 PM (O3: 84.0/100).
When is air pollution at its worst in Weinan?
Air quality in Weinan tends to be worse when road traffic, petrochemical and refining operations, as well as mining and quarrying operations build up and temperature inversions set in over the valley. The bowl-like terrain here limits how quickly pollutants can escape. Fuel burned for winter heating adds an extra layer of particulates on top of other sources.
Are air quality levels in Weinan 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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