San Juan
Summary
Air quality in San Juan is unhealthy (AQI 163), driven by PM10. Everyone should limit prolonged outdoor exertion.
Current Air Quality Index
163
Unhealthy
050100150200300500
Dominant Pollutant:
PM10
Health Advice
Everyone may begin to experience health effects. Sensitive groups may experience more serious effects. Limit outdoor activity.
Pollutant Breakdown
| Pollutant | Concentration | Unit |
|---|---|---|
| PM2.5 | 5.0 | µg/m³ |
| PM10 (dominant) | 280.0 | µg/m³ |
Explore also
Event Details
Coords: 18.3985,
-66.0610
PR
Last update:
39 minutes ago
Updated:
1 hour ago
Unhealthy
About the Air Quality Index
The AQI is a dimensionless index from 0 to 500, where lower values indicate better air quality. It is calculated from the six criteria pollutants.
Good
(0–50)
Moderate
(0–100)
Unhealthy for Sensitive Groups
(0–150)
Unhealthy
(0–200)
Very Unhealthy
(0–300)
Hazardous
(0–500)