Air Quality in Heyan, China
Cloudy
22.7°C · 74.5% humidity
22.7°
Feels 22.7°
56
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model
Nearby Monitoring Stations
Heyan's air quality — share it
AQI Forecast
66
4am
66
66
56
7am
59
61
62
10am
63
52
53
1pm
53
53
54
4pm
54
54
54
7pm
54
54
66
10pm
66
66
66
1am
66
66
Air Quality Index Trend
26h · 1 stnHeyan's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions.
74.5%
Humidity
14.4 km/h
Wind NE
1003.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
14.55 µg/m³
PM10
48.05 µg/m³
050100150200300500
What is the weather forecast for Heyan?
Temperature & Precipitation
PM2.5 Trend
26h · 1 stationPM2.514.55 µg/m³
✓ WHO
Moderate
PM1048.05 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Heyan?
07-21
27.2° 18.8°
5.94 mm
07-22
27.1° 19.6°
2.87 mm
07-23
29.8° 18.4°
2.25 mm
07-24
29.3° 20.6°
6.13 mm
07-25
29.0° 20.2°
6.0 mm
07-26
26.0° 20.0°
8.69 mm
07-27
27.7° 20.8°
7.0 mm
Both models agree
Avg diff: 2.5°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T23:11 UTC.