Reunion · Indian/Reunion
Saint-Denis air quality
44
Good
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 11:00 +04 · 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 particles7.9 µg/m³
- PM10Coarse particles13.2 µg/m³
- O3Ozone59.0 µg/m³
- NO2Nitrogen dioxide0.7 µg/m³
- SO2Sulphur dioxide1.3 µg/m³
- COCarbon monoxide88.7 µg/m³
Weather in Saint-Denis
See the temperature, rain and wind forecast for Saint-Denis.
Saint-Denis 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 |
|---|---|---|---|---|---|---|
| 7.9 | 13.1 | 59.4 | 0.7 | 1.3 | 88.7 | |
| 7.8 | 12.9 | 59.6 | 0.7 | 1.3 | 89.0 | |
| 7.6 | 12.6 | 58.3 | 0.9 | 1.4 | 89.4 | |
| 7.4 | 12.3 | 56.3 | 1.1 | 1.4 | 89.6 | |
| 7.3 | 12.2 | 54.0 | 1.5 | 1.4 | 90.2 | |
| 7.5 | 12.5 | 52.0 | 2.0 | 1.4 | 91.0 | |
| 7.8 | 13.0 | 50.4 | 2.4 | 1.4 | 91.4 | |
| 7.9 | 13.4 | 49.3 | 2.3 | 1.3 | 91.1 | |
| 7.3 | 12.3 | 48.6 | 2.3 | 1.2 | 91.1 | |
| 6.2 | 10.6 | 49.2 | 1.7 | 1.0 | 89.7 | |
| 5.6 | 9.6 | 50.2 | 1.3 | 0.9 | 88.7 | |
| 5.4 | 9.3 | 50.8 | 1.1 | 0.8 | 87.8 | |
| 5.5 | 9.4 | 51.5 | 0.9 | 0.7 | 87.0 | |
| 5.4 | 9.3 | 52.0 | 0.7 | 0.6 | 86.0 | |
| 5.4 | 9.2 | 52.4 | 0.6 | 0.6 | 85.4 | |
| 5.4 | 9.2 | 52.7 | 0.5 | 0.5 | 84.8 | |
| 5.6 | 9.7 | 52.9 | 0.5 | 0.5 | 84.0 | |
| 6.1 | 10.6 | 52.4 | 0.5 | 0.5 | 82.4 | |
| 6.7 | 11.5 | 52.5 | 0.5 | 0.5 | 80.8 | |
| 6.8 | 11.7 | 52.4 | 0.7 | 0.6 | 80.6 | |
| 8.2 | 14.2 | 52.7 | 1.0 | 0.7 | 79.9 | |
| 9.3 | 15.9 | 53.3 | 0.9 | 0.7 | 79.2 | |
| 9.7 | 16.7 | 54.5 | 0.7 | 0.7 | 78.2 | |
| 10.0 | 17.2 | 55.1 | 0.5 | 0.7 | 76.9 |
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 11:00 +04. Retrieved: 2026-10-02T04:20:41.490240+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 18 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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