Brazil · America/Sao_Paulo
Rio de Janeiro air quality
84
Moderate
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 04:00 -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 particles31.4 µg/m³
- PM10Coarse particles33.9 µg/m³
- O3Ozone30.3 µg/m³
- NO2Nitrogen dioxide39.2 µg/m³
- SO2Sulphur dioxide11.4 µg/m³
- COCarbon monoxide457.6 µg/m³
Weather in Rio de Janeiro
See the temperature, rain and wind forecast for Rio de Janeiro.
Rio de Janeiro 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 |
|---|---|---|---|---|---|---|
| 32.7 | 35.4 | 32.1 | 38.8 | 13.0 | 441.7 | |
| 35.8 | 38.6 | 31.4 | 42.5 | 13.8 | 497.7 | |
| 32.2 | 34.7 | 55.4 | 35.2 | 17.0 | 425.6 | |
| 29.5 | 31.8 | 72.3 | 31.4 | 16.9 | 415.7 | |
| 23.0 | 25.2 | 89.9 | 26.6 | 14.9 | 398.8 | |
| 18.8 | 20.9 | 100.4 | 23.1 | 13.6 | 379.2 | |
| 17.4 | 19.5 | 100.2 | 19.7 | 11.3 | 352.6 | |
| 16.6 | 19.8 | 93.1 | 18.2 | 9.8 | 319.4 | |
| 12.9 | 16.1 | 81.9 | 17.2 | 8.1 | 280.9 | |
| 9.3 | 11.7 | 65.3 | 18.2 | 6.6 | 255.6 | |
| 8.4 | 10.7 | 51.5 | 19.8 | 5.1 | 254.0 | |
| 10.1 | 12.8 | 41.0 | 23.8 | 4.5 | 278.4 | |
| 11.0 | 14.2 | 37.3 | 25.4 | 4.1 | 275.1 | |
| 14.1 | 17.5 | 27.2 | 33.0 | 4.2 | 340.6 | |
| 15.4 | 19.2 | 26.1 | 33.0 | 4.3 | 358.0 | |
| 13.6 | 17.7 | 27.8 | 31.1 | 4.6 | 299.8 | |
| 9.1 | 12.9 | 30.5 | 27.5 | 4.9 | 256.7 | |
| 9.1 | 13.4 | 39.6 | 18.4 | 4.4 | 186.1 | |
| 11.2 | 16.1 | 39.2 | 16.8 | 3.9 | 174.7 | |
| 11.8 | 16.8 | 39.5 | 15.5 | 3.7 | 162.4 | |
| 11.5 | 16.4 | 42.4 | 12.4 | 3.5 | 139.1 | |
| 9.9 | 14.4 | 45.9 | 9.7 | 3.2 | 122.9 | |
| 9.3 | 13.3 | 44.2 | 9.2 | 2.9 | 119.1 | |
| 6.7 | 10.0 | 43.7 | 9.2 | 3.0 | 116.8 |
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 04:00 -03. Retrieved: 2026-10-02T04:19:29.076931+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 12 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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