Worst air pollution Yan’an, today and tomorrow
Today (10 August): Air quality in Yan’an is fair. PM1 is fair; AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 51.2/100).
Tomorrow (11 August 2026): Air quality in Yan’an is poor. AQI worsens to poor; PM2.5 increases to fair; O3 increases to poor; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 70.9/100). 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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Yan'an's air quality reflects the Shaanxi northern Loess Plateau's Yan River valley enclosed position at 958 metres, with vehicle traffic on surrounding expressways and the oil production — Yan'an sitting at the heart of the Yanchang Petroleum fields — and agricultural corridor generating elevated petroleum industry VOCs. The deeply incised loess plateau valley creates significant topographic enclosure under winter inversions, while the petroleum extraction operations add a distinctive industrial emission profile throughout most of the year.
Today - 10 August | Pollution peaks at 16:00
AQI:
Medium
51.2/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Medium
45.1/100
O3 (ozone):
Medium
51.2/100
SO2 (sulfur dioxide):
Good
8.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.9/100
PM1 (ultrafine particles):
Fair
21.6/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 11:00
AQI:
Poor
70.9/100
PM2.5 (fine particles):
Fair
21.8/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Medium
53.3/100
O3 (ozone):
Poor
70.9/100
SO2 (sulfur dioxide):
Good
10.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.4/100
PM1 (ultrafine particles):
Fair
27.8/100
Frequently Asked Questions
Is air quality bad in Yan’an right now?
On 10 August 2026, overall air quality in Yan’an is fair. PM1 is the main pollutant at 21.6/100. Pollution peaks around 4:00 PM (O3: 51.2/100).
Will air quality be worse tomorrow in Yan’an?
On 11 August 2026, air quality conditions in Yan’an will be worse than today, with AQI forecast at poor at 70.9/100. Pollution peaks around 11:00 AM (O3: 70.9/100).
When is air pollution at its worst in Yan’an?
The biggest local contributors to pollution in Yan’an are traffic emissions, heavy industrial and chemical processing, and farming and agricultural processing, particularly once the surrounding valley traps air close to the ground. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in Yan’an 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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