Laos · Asia/Vientiane
Vientiane air quality
40
Good
CAMS model-based US AQI estimate
Highest pollutant sub-index: O3
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 particles9.1 µg/m³
- PM10Coarse particles9.4 µg/m³
- O3Ozone95.2 µg/m³
- NO2Nitrogen dioxide1.1 µg/m³
- SO2Sulphur dioxide4.9 µg/m³
- COCarbon monoxide192.5 µg/m³
Weather in Vientiane
See the temperature, rain and wind forecast for Vientiane.
Vientiane 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 |
|---|---|---|---|---|---|---|
| 8.9 | 9.1 | 95.2 | 1.1 | 4.8 | 193.3 | |
| 8.8 | 9.1 | 94.7 | 1.3 | 4.9 | 195.3 | |
| 8.9 | 9.1 | 71.4 | 3.2 | 4.1 | 210.4 | |
| 9.4 | 9.6 | 61.9 | 5.1 | 4.9 | 225.8 | |
| 11.4 | 11.6 | 54.7 | 8.2 | 6.0 | 254.8 | |
| 12.9 | 13.1 | 50.9 | 10.3 | 7.2 | 272.9 | |
| 15.0 | 15.2 | 43.2 | 13.1 | 7.4 | 299.8 | |
| 15.1 | 15.3 | 38.8 | 14.0 | 8.2 | 304.2 | |
| 16.5 | 16.7 | 33.1 | 16.7 | 8.2 | 331.5 | |
| 17.1 | 17.3 | 28.7 | 18.9 | 8.1 | 342.0 | |
| 16.2 | 16.3 | 28.9 | 18.6 | 9.3 | 322.2 | |
| 17.3 | 17.4 | 25.4 | 19.6 | 9.2 | 318.3 | |
| 17.3 | 17.5 | 24.0 | 19.5 | 9.3 | 310.8 | |
| 15.0 | 15.1 | 27.0 | 17.2 | 6.8 | 285.0 | |
| 13.6 | 13.7 | 31.6 | 14.1 | 7.9 | 278.4 | |
| 14.3 | 14.5 | 29.1 | 15.1 | 8.3 | 285.1 | |
| 12.9 | 13.0 | 40.3 | 10.3 | 9.4 | 277.0 | |
| 10.1 | 10.3 | 65.7 | 5.1 | 9.9 | 255.4 | |
| 10.3 | 10.5 | 82.3 | 2.9 | 8.5 | 243.0 | |
| 10.0 | 10.1 | 95.8 | 1.7 | 7.5 | 236.0 | |
| 9.5 | 9.6 | 101.0 | 1.3 | 6.1 | 226.9 | |
| 9.3 | 9.5 | 102.6 | 1.2 | 5.4 | 221.2 | |
| 10.4 | 10.6 | 103.1 | 1.2 | 5.0 | 218.9 | |
| 9.9 | 10.0 | 104.7 | 1.2 | 4.8 | 221.1 |
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 14:00 +07. Retrieved: 2026-10-02T04:35:57.302143+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 21 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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