China · Asia/Shanghai
Hefei air quality
68
Moderate
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 15:00 CST · CAMS model estimate, may differ from monitoring stations and street-level conditions
Data may be delayed
AirNow by Skymory is an independent service; it is not affiliated with or endorsed by U.S. EPA or the official AirNow service.
Pollutants now (modeled)
- PM2.5Fine particles15.8 µg/m³
- PM10Coarse particles23.9 µg/m³
- O3Ozone50.3 µg/m³
- NO2Nitrogen dioxide30.6 µg/m³
- SO2Sulphur dioxide4.7 µg/m³
- COCarbon monoxide428.3 µg/m³
Weather in Hefei
See the temperature, rain and wind forecast for Hefei.
Hefei weather forecast on SkymoryNext 24 hours: PM2.5
Pollutant forecast
Hourly model samples in local time; no interpolation.
| Local time | PM2.5 µg/m³ | PM10 µg/m³ | O3 µg/m³ | NO2 µg/m³ | SO2 µg/m³ | CO µg/m³ |
|---|---|---|---|---|---|---|
| 16.6 | 24.9 | 45.8 | 34.0 | 5.2 | 455.6 | |
| 18.0 | 25.8 | 32.9 | 44.0 | 5.8 | 503.1 | |
| 20.8 | 27.4 | 8.8 | 63.8 | 6.4 | 582.2 | |
| 22.3 | 28.7 | 2.3 | 69.8 | 7.0 | 618.8 | |
| 23.8 | 30.1 | 1.1 | 70.6 | 7.7 | 647.0 | |
| 25.3 | 31.7 | 0.9 | 70.3 | 8.3 | 668.2 | |
| 27.1 | 33.5 | 0.1 | 70.2 | 9.0 | 697.0 | |
| 28.1 | 34.6 | 0.0 | 69.1 | 9.2 | 717.4 | |
| 27.9 | 35.0 | 0.0 | 68.8 | 9.4 | 702.8 | |
| 28.3 | 36.8 | 0.0 | 68.1 | 9.6 | 678.1 | |
| 28.5 | 38.8 | 0.1 | 67.5 | 9.5 | 646.6 | |
| 29.3 | 41.7 | 0.4 | 67.4 | 9.2 | 611.8 | |
| 30.0 | 44.4 | 2.1 | 67.0 | 8.9 | 566.6 | |
| 29.8 | 44.6 | 4.7 | 66.3 | 8.0 | 516.5 | |
| 29.0 | 42.8 | 6.2 | 66.2 | 7.6 | 487.2 | |
| 29.2 | 41.8 | 8.6 | 64.1 | 7.8 | 479.5 | |
| 29.4 | 40.9 | 7.7 | 65.1 | 8.0 | 487.1 | |
| 27.9 | 37.7 | 13.0 | 58.6 | 7.7 | 478.1 | |
| 26.7 | 34.5 | 15.5 | 53.2 | 7.5 | 478.1 | |
| 24.6 | 31.6 | 17.6 | 50.3 | 7.5 | 463.8 | |
| 23.2 | 29.2 | 20.5 | 46.6 | 7.5 | 465.6 | |
| 21.9 | 26.9 | 23.3 | 42.9 | 7.3 | 466.7 | |
| 20.7 | 25.0 | 29.4 | 38.1 | 7.5 | 471.8 | |
| 19.4 | 23.3 | 27.0 | 41.9 | 7.7 | 472.1 |
Data details: about this air quality estimate
Values are modeled by the Copernicus Atmosphere Monitoring Service (CAMS) global forecast, extracted and converted by Skymory for this city. They are model estimates on a coarse grid, not measurements from monitoring stations, and they do not resolve street-level exposure.
- Model initialization: 2026-10-01T12:00:00+00:00. Values valid: Oct 02 15:00 CST. Retrieved: 2026-10-02T04:51:05.374867+00:00.
- Page generated from a snapshot with data state STALE_USABLE; model age 19.9 hours at generation.
- Nearest valid 0.4° model grid cell, about 17 km from the city point.
- Gases are converted with matching model-level 137 temperature, humidity, surface pressure (lnsp) and hybrid coefficients; particulate matter is read directly from the surface fields.
- AQI estimate completeness: COMPLETE (COMPLETE means all six pollutants have a complete model window).
The AQI estimate applies EPA breakpoints (May 2026) to explicit trailing model windows (PM 24 h, CO 8 h, NO2 1 h, SO2 and O3 per EPA rules). It is not a station observation, official daily maximum or NowCast, and the official AQI field remains unavailable.
Averaging windows used
- CO: 8h window
- NO2: 1h window
- O3: 1h, 8h window
- PM10: 24h window
- PM2.5: 24h window
- SO2: 1h, 24h window
Surface compatibility by pollutant
| Pollutant | Surface compatibility |
|---|---|
| PM2.5 | DIRECT_SURFACE |
| PM10 | DIRECT_SURFACE |
| O3 | DERIVABLE_SURFACE |
| NO2 | DERIVABLE_SURFACE |
| SO2 | DERIVABLE_SURFACE |
| CO | DERIVABLE_SURFACE |
Source and license
Contains modified Copernicus Atmosphere Monitoring Service information 2026; city extraction and concentration conversion. CAMS global atmospheric composition forecasts (ECMWF/CAMS). CC BY 4.0.
Provider times stay separate from page generation: collecting data or regenerating this page never resets the source time. Data sources and methodology
Static snapshot is available without JavaScript.