Kenya · Africa/Nairobi
Nairobi air quality
49
Good
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 10:00 EAT · 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 particles9.4 µg/m³
- PM10Coarse particles11.0 µg/m³
- O3Ozone89.3 µg/m³
- NO2Nitrogen dioxide1.5 µg/m³
- SO2Sulphur dioxide4.8 µg/m³
- COCarbon monoxide213.2 µg/m³
Weather in Nairobi
See the temperature, rain and wind forecast for Nairobi.
Nairobi 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 |
|---|---|---|---|---|---|---|
| 8.5 | 10.0 | 90.5 | 1.3 | 4.0 | 198.5 | |
| 7.8 | 9.1 | 90.3 | 1.2 | 3.4 | 186.2 | |
| 7.0 | 8.2 | 88.4 | 1.2 | 2.9 | 172.6 | |
| 6.3 | 7.5 | 85.9 | 1.3 | 2.6 | 161.2 | |
| 5.8 | 6.9 | 82.3 | 1.4 | 2.3 | 152.2 | |
| 5.3 | 6.3 | 77.7 | 1.7 | 2.2 | 147.2 | |
| 4.9 | 5.8 | 71.6 | 2.5 | 2.1 | 148.1 | |
| 4.8 | 5.7 | 64.9 | 3.8 | 2.1 | 152.8 | |
| 5.8 | 6.6 | 57.5 | 5.6 | 2.3 | 168.9 | |
| 6.8 | 7.6 | 53.9 | 5.9 | 2.6 | 177.2 | |
| 7.4 | 8.3 | 51.6 | 5.7 | 2.7 | 179.1 | |
| 7.9 | 8.8 | 49.7 | 5.6 | 2.8 | 178.0 | |
| 8.2 | 9.1 | 47.8 | 5.7 | 2.8 | 177.1 | |
| 8.0 | 9.0 | 46.5 | 5.5 | 2.7 | 170.5 | |
| 7.8 | 8.9 | 45.0 | 5.1 | 2.7 | 163.9 | |
| 7.6 | 8.7 | 44.1 | 4.6 | 2.7 | 156.1 | |
| 7.8 | 8.9 | 41.6 | 4.7 | 2.9 | 155.9 | |
| 8.2 | 9.4 | 38.4 | 5.0 | 3.0 | 159.8 | |
| 8.7 | 9.9 | 35.0 | 5.5 | 3.0 | 166.2 | |
| 9.6 | 10.7 | 31.0 | 6.6 | 3.2 | 181.4 | |
| 12.7 | 13.8 | 30.6 | 8.0 | 3.8 | 228.0 | |
| 10.1 | 11.6 | 57.9 | 3.2 | 4.5 | 192.2 | |
| 9.2 | 10.7 | 74.6 | 1.4 | 4.4 | 190.0 | |
| 8.3 | 9.7 | 82.1 | 1.0 | 4.2 | 186.4 |
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 10:00 EAT. Retrieved: 2026-10-02T04:27:32.086849+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 9 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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