Air Quality History for San Francisco, United States
Historical PM2.5 and AQI trend from monitoring stations near San Francisco, United States.
21
Current AQI
Good Station
Good Station
Air Quality Index Station
140hPM2.5 Station
140h · 1 stationTemperature GFS model
28ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-07-22 | 4 | 1–5 | 0.8 µg/m³ | 1.3 | 4h | 1 |
| 2026-07-21 | 18 | 3–44 | 4.3 µg/m³ | 4.9 | 24h | 1 |
| 2026-07-20 | 10 | 1–25 | 2.3 µg/m³ | 2.8 | 19h | 1 |
| 2026-07-19 | 14 | 1–22 | 3.3 µg/m³ | 4.3 | 9h | 1 |
| 2026-07-18 | 11 | 3–23 | 2.5 µg/m³ | 3.4 | 20h | 1 |
| 2026-07-17 | 27 | 14–37 | 6.4 µg/m³ | 8.7 | 24h | 1 |
| 2026-07-16 | 20 | 12–31 | 4.8 µg/m³ | 6.8 | 24h | 1 |
| 2026-07-15 | 17 | 4–28 | 4.1 µg/m³ | 5.8 | 16h | 1 |