Air quality in San José today
Costa Rica · Updated Thursday 23:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Moderate European AQI
Sensitive people may want to take it easier outdoors.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 13 µg/m³ | Fair |
| PM10 | 13 µg/m³ | Good |
| NO₂ | 35 µg/m³ | Good |
| O₃ | 9 µg/m³ | Good |
The pollutant that matters most in San José right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in San José is expected to be worst around Fri 19:00 (AQI 47, moderate). The cleanest hour is expected around Fri 13:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 00:00 | 43 | Moderate | 13 |
| Fri 03:00 | 38 | Fair | 14 |
| Fri 06:00 | 41 | Moderate | 17 |
| Fri 09:00 | 33 | Fair | 8 |
| Fri 12:00 | 27 | Fair | 6 |
| Fri 15:00 | 26 | Fair | 5 |
| Fri 18:00 | 46 | Moderate | 7 |
| Fri 21:00 | 45 | Moderate | 10 |
The last 30 days
Over the last 30 days the average daily AQI in San José was 27, with 0 day(s) rated poor or worse. The cleanest day was 30 Aug, the most polluted 22 Sept.
Questions and answers
- Is the air in San José good today?
- Right now the European Air Quality Index in San José is 46, which is moderate. Sensitive people may want to take it easier outdoors.
- What pollutes the air in San José?
- At the moment PM2.5 contributes most to the air quality index in San José. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in San José be cleanest?
- Over the next 24 hours the air in San José is expected to be worst around Fri 19:00 (AQI 47, moderate). The cleanest hour is expected around Fri 13:00.
- Where does this data come from?
- Wheezair shows model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), served by Open-Meteo: about 11 km resolution in Europe and 40 km elsewhere, updated daily. They are not station measurements, so a busy street can be worse than its city's value.