Air Quality History for Foster City, United States
Historical PM2.5 and AQI trend from monitoring stations near Foster City, United States.
19
Current AQI
Good Station
Good Station
Air Quality Index Station
290hPM2.5 Station
290h · 1 stationTemperature GFS model
55ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-07-22 | 3 | 1–5 | 0.8 µg/m³ | 1.3 | 3h | 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 | 18 | 4–28 | 4.3 µg/m³ | 5.9 | 24h | 1 |
| 2026-07-14 | 28 | 12–51 | 6.6 µg/m³ | 9.1 | 24h | 1 |
| 2026-07-13 | 14 | 4–29 | 3.3 µg/m³ | 5.4 | 24h | 1 |
| 2026-07-12 | 6 | 2–13 | 1.5 µg/m³ | 2.7 | 23h | 1 |
| 2026-07-11 | 4 | 1–10 | 0.9 µg/m³ | 1.8 | 13h | 1 |
| 2026-07-10 | 20 | 3–28 | 4.7 µg/m³ | 7.0 | 22h | 1 |
| 2026-07-09 | 9 | 2–23 | 2.0 µg/m³ | 3.0 | 20h | 1 |
| 2026-07-08 | 11 | 3–20 | 2.5 µg/m³ | 3.4 | 17h | 1 |