Vietnam · Asia/Bangkok
Hanoi air quality
96
Moderate
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 14:00 +07 · 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 particles33.4 µg/m³
- PM10Coarse particles35.9 µg/m³
- O3Ozone192.9 µg/m³
- NO2Nitrogen dioxide5.9 µg/m³
- SO2Sulphur dioxide21.6 µg/m³
- COCarbon monoxide383.5 µg/m³
Weather in Hanoi
See the temperature, rain and wind forecast for Hanoi.
Hanoi 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 |
|---|---|---|---|---|---|---|
| 35.4 | 37.8 | 200.0 | 6.6 | 21.8 | 392.6 | |
| 36.5 | 38.7 | 192.7 | 9.3 | 22.3 | 415.1 | |
| 39.4 | 41.4 | 148.8 | 20.2 | 23.3 | 518.2 | |
| 47.9 | 49.9 | 105.7 | 35.3 | 29.4 | 692.3 | |
| 48.6 | 50.7 | 72.5 | 39.7 | 33.3 | 735.7 | |
| 42.3 | 44.5 | 47.4 | 39.6 | 34.9 | 672.6 | |
| 38.7 | 41.4 | 27.9 | 41.1 | 34.9 | 638.6 | |
| 34.6 | 37.2 | 17.2 | 40.9 | 33.4 | 597.5 | |
| 31.7 | 34.1 | 14.0 | 39.4 | 31.4 | 563.7 | |
| 30.4 | 32.6 | 13.9 | 38.0 | 29.5 | 539.7 | |
| 29.8 | 32.1 | 16.1 | 36.1 | 28.1 | 518.5 | |
| 29.5 | 31.9 | 18.4 | 34.5 | 27.1 | 505.8 | |
| 29.4 | 32.0 | 19.9 | 33.5 | 26.6 | 500.0 | |
| 28.7 | 31.2 | 21.2 | 33.1 | 26.6 | 493.4 | |
| 29.8 | 32.4 | 20.0 | 34.2 | 27.2 | 502.2 | |
| 32.1 | 34.7 | 19.2 | 35.4 | 29.2 | 535.5 | |
| 31.2 | 34.0 | 27.2 | 30.0 | 31.0 | 544.4 | |
| 25.3 | 28.5 | 46.6 | 21.9 | 28.6 | 472.7 | |
| 23.1 | 27.3 | 72.2 | 14.8 | 24.4 | 406.4 | |
| 23.7 | 28.1 | 100.5 | 10.7 | 22.3 | 387.1 | |
| 23.3 | 26.1 | 126.8 | 7.0 | 19.8 | 369.0 | |
| 24.4 | 27.0 | 143.1 | 4.9 | 17.8 | 351.4 | |
| 25.0 | 27.3 | 148.6 | 4.5 | 16.3 | 345.3 | |
| 25.5 | 27.7 | 150.4 | 4.7 | 15.7 | 344.3 |
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 14:00 +07. Retrieved: 2026-10-02T04:44:49.502580+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 26 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
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