El Salvador · America/El_Salvador
San Salvador air quality
49
Good
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 01:00 CST · 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 particles14.3 µg/m³
- PM10Coarse particles15.4 µg/m³
- O3Ozone24.4 µg/m³
- NO2Nitrogen dioxide14.7 µg/m³
- SO2Sulphur dioxide2.0 µg/m³
- COCarbon monoxide387.4 µg/m³
Weather in San Salvador
See the temperature, rain and wind forecast for San Salvador.
San Salvador 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 |
|---|---|---|---|---|---|---|
| 14.9 | 16.0 | 21.5 | 14.6 | 2.1 | 385.7 | |
| 14.6 | 15.7 | 20.4 | 15.2 | 2.0 | 380.4 | |
| 13.0 | 13.9 | 15.1 | 14.9 | 1.7 | 386.6 | |
| 12.6 | 13.3 | 10.9 | 15.5 | 1.5 | 409.1 | |
| 14.2 | 14.9 | 10.1 | 15.9 | 1.5 | 480.1 | |
| 14.0 | 15.3 | 40.3 | 11.7 | 2.7 | 394.1 | |
| 9.0 | 10.3 | 64.5 | 4.1 | 2.9 | 224.0 | |
| 7.7 | 8.7 | 75.8 | 2.2 | 2.3 | 200.5 | |
| 6.9 | 8.0 | 75.9 | 1.3 | 1.6 | 173.7 | |
| 5.8 | 6.8 | 70.3 | 1.0 | 1.1 | 154.1 | |
| 5.1 | 6.0 | 65.9 | 0.9 | 0.9 | 143.9 | |
| 5.4 | 6.3 | 68.9 | 1.0 | 1.0 | 149.3 | |
| 5.5 | 6.3 | 71.9 | 1.0 | 1.0 | 152.5 | |
| 5.6 | 6.5 | 72.6 | 1.2 | 1.0 | 155.4 | |
| 5.9 | 6.9 | 69.3 | 1.8 | 1.0 | 159.6 | |
| 5.9 | 6.8 | 64.4 | 3.0 | 1.0 | 172.9 | |
| 7.6 | 8.5 | 49.1 | 8.0 | 1.1 | 233.5 | |
| 10.0 | 10.9 | 34.8 | 12.1 | 1.3 | 289.1 | |
| 11.8 | 12.8 | 30.0 | 14.8 | 1.6 | 328.6 | |
| 12.8 | 13.8 | 28.1 | 15.8 | 1.8 | 342.0 | |
| 13.0 | 14.0 | 28.3 | 16.0 | 2.0 | 342.0 | |
| 12.7 | 13.7 | 28.5 | 16.0 | 2.0 | 342.5 | |
| 11.5 | 12.4 | 27.0 | 14.0 | 1.9 | 321.6 | |
| 10.4 | 11.3 | 25.9 | 11.9 | 1.8 | 298.1 |
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 01:00 CST. Retrieved: 2026-10-02T04:04:35.781538+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 10 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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