Worst air pollution Hejian, today and tomorrow
Today (10 August): Air quality in Hejian is poor. AQI, NO2, and O3 are poor; PM2.5, SO2, and PM1 are fair; PM10, CO, and HCHO are good. Pollution peaks around 5:00 AM (NO2: 76.2/100).
Tomorrow (11 August 2026): Air quality in Hejian is poor. PM2.5 decreases to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 67.5/100). 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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Hejian's air quality reflects the flat Hebei North China Plain's agricultural and light industrial position in the Beijing-Tianjin-Hebei corridor, with vehicle traffic and manufacturing contributing local sources. Winter anticyclonic inversions and the Beijing-Tianjin-Hebei regional industrial background elevate readings and Hejian generally maintains moderate to elevated Hebei corridor readings throughout the winter months.
Today - 10 August | Pollution peaks at 05:00
AQI:
Poor
76.2/100
PM2.5 (fine particles):
Fair
27.3/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Poor
76.2/100
O3 (ozone):
Poor
73.9/100
SO2 (sulfur dioxide):
Fair
28.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.1/100
PM1 (ultrafine particles):
Fair
34.2/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 05:00
AQI:
Poor
67.5/100
PM2.5 (fine particles):
Good
15.3/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Poor
67.5/100
O3 (ozone):
Good
14.8/100
SO2 (sulfur dioxide):
Fair
26.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Fair
20.3/100
Frequently Asked Questions
Is air quality bad in Hejian right now?
On 10 August 2026, overall air quality in Hejian is poor. AQI is the main air quality indicator at 76.2/100. Pollution peaks around 5:00 AM (NO2: 76.2/100).
Will air quality be worse tomorrow in Hejian?
On 11 August 2026, air quality conditions in Hejian will be similar to today, with AQI forecast at poor at 67.5/100. Pollution peaks around 5:00 AM (NO2: 67.5/100).
When is air pollution at its worst in Hejian?
Air quality in Hejian tends to be worse when road traffic, light manufacturing, and agricultural activity build up and windblown dust events occur. These wind events can carry dust in from the surrounding arid landscape. Such events are most common in the drier shoulder seasons.
Are air quality levels in Hejian 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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