San Juan air quality
Updated 24/10, 23:01
Current AQI
US EPA scale · observed at 23:00
17
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 4,9 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 7,4 µg/m³ | Particles ≤ 10 µm |
| O₃ | 33 µg/m³ | Ozone |
| NO₂ | 1 µg/m³ | Nitrogen dioxide |
| SO₂ | 2,1 µg/m³ | Sulphur dioxide |
| CO | 100 µg/m³ | Carbon monoxide |
AQI, next 24 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 23:00 | 17 | Good |
| 00:00 | 18 | Good |
| 01:00 | 18 | Good |
| 02:00 | 19 | Good |
| 03:00 | 19 | Good |
| 04:00 | 20 | Good |
| 05:00 | 20 | Good |
| 06:00 | 21 | Good |
| 07:00 | 21 | Good |
| 08:00 | 21 | Good |
| 09:00 | 22 | Good |
| 10:00 | 22 | Good |
| 11:00 | 22 | Good |
| 12:00 | 22 | Good |
| 13:00 | 23 | Good |
| 14:00 | 23 | Good |
| 15:00 | 24 | Good |
| 16:00 | 24 | Good |
| 17:00 | 25 | Good |
| 18:00 | 25 | Good |
| 19:00 | 25 | Good |
| 20:00 | 26 | Good |
| 21:00 | 26 | Good |
| 22:00 | 26 | Good |