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San Joaquin E
San Joaquin
225
US EPA AQI · Very unhealthy
Based on the 1-hour PM2.5 average (174.3 µg/m³)
PM2.5 & US EPA AQI by time window
| Window | PM2.5 | AQI | Category |
|---|---|---|---|
| 1-hour avg | 174.3 µg/m³ | 225 | Very unhealthy |
| 6-hour avg | 66.4 µg/m³ | 157 | Unhealthy |
| 24-hour avg | 38.6 µg/m³ | 109 | Unhealthy for sensitive groups |
| 1-week avg | 19.0 µg/m³ | 66 | Moderate |
Current conditions
71°F
Temperature
44%
Humidity
1,009
Pressure (mb)
PM1.0
2,994.7 µg/m³
PM10
2,994.7 µg/m³
Data confidence
60%
Altitude
165 ft
Last updated
Jul 4, 2026 5:59:23 AM
0–50 Good
51–100 Moderate
101–150 Unhealthy (sensitive)
151–200 Unhealthy
201–300 Very unhealthy
301+ Hazardous
Air quality is shown as the US EPA AQI computed from PurpleAir PM2.5 readings. Values are preliminary and for community awareness; see the Air Monitoring Q&A.