Saudi Arabia · Asia/Riyadh
Riyadh air quality
1476
Hazardous
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM10
Model values for Oct 02 10:00 +03 · 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 particles177.2 µg/m³
- PM10Coarse particles1556.7 µg/m³
- O3Ozone79.1 µg/m³
- NO2Nitrogen dioxide23.2 µg/m³
- SO2Sulphur dioxide67.6 µg/m³
- COCarbon monoxide173.4 µg/m³
Weather in Riyadh
See the temperature, rain and wind forecast for Riyadh.
Riyadh 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 |
|---|---|---|---|---|---|---|
| 183.9 | 1723.8 | 94.6 | 19.3 | 48.1 | 153.7 | |
| 167.5 | 1602.9 | 104.4 | 12.9 | 32.1 | 141.4 | |
| 149.1 | 1430.6 | 108.7 | 9.5 | 24.2 | 135.8 | |
| 138.1 | 1320.7 | 110.1 | 8.8 | 21.3 | 132.7 | |
| 133.4 | 1277.9 | 108.2 | 9.6 | 20.5 | 131.2 | |
| 129.7 | 1240.1 | 103.4 | 12.0 | 20.9 | 132.7 | |
| 130.0 | 1231.4 | 95.5 | 16.4 | 22.6 | 137.8 | |
| 143.3 | 1144.2 | 65.4 | 32.3 | 30.4 | 182.9 | |
| 126.1 | 906.6 | 51.8 | 39.1 | 36.8 | 202.1 | |
| 161.4 | 1304.6 | 52.0 | 35.8 | 38.8 | 191.7 | |
| 233.5 | 2074.5 | 57.1 | 28.7 | 36.4 | 172.0 | |
| 281.4 | 2489.7 | 58.8 | 23.5 | 32.5 | 160.0 | |
| 268.7 | 2266.8 | 57.0 | 20.8 | 29.6 | 156.3 | |
| 227.9 | 1818.9 | 55.2 | 18.6 | 28.0 | 153.2 | |
| 191.5 | 1456.6 | 54.4 | 16.4 | 27.5 | 149.0 | |
| 158.4 | 1135.8 | 53.6 | 15.0 | 27.5 | 146.3 | |
| 131.1 | 889.1 | 52.1 | 14.3 | 27.9 | 145.3 | |
| 132.0 | 943.3 | 50.7 | 14.4 | 28.6 | 147.2 | |
| 152.6 | 1170.2 | 50.0 | 15.6 | 29.9 | 153.9 | |
| 170.4 | 1331.1 | 46.8 | 20.3 | 32.2 | 172.9 | |
| 195.5 | 1595.9 | 45.5 | 23.7 | 35.9 | 203.6 | |
| 204.4 | 1679.6 | 49.6 | 23.3 | 39.4 | 220.8 | |
| 238.9 | 2214.2 | 60.9 | 18.9 | 40.1 | 191.9 | |
| 273.3 | 2626.3 | 71.1 | 15.1 | 32.8 | 160.9 |
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 10:00 +03. Retrieved: 2026-10-02T04:43:20.180038+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 15 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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