Air Quality History for San Mateo, United States
Historical PM2.5 and AQI trend from monitoring stations near San Mateo, United States.
12
Current AQI
Good Station
Good Station
Air Quality Index Station
296hPM2.5 Station
296h · 1 stationTemperature GFS model
56ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-06-09 | 13 | 2–23 | 3.1 µg/m³ | 4.2 | 10h | 1 |
| 2026-06-08 | 9 | 1–18 | 2.0 µg/m³ | 3.7 | 19h | 1 |
| 2026-06-07 | 9 | 2–19 | 2.1 µg/m³ | 4.1 | 24h | 1 |
| 2026-06-06 | 18 | 4–54 | 4.3 µg/m³ | 6.8 | 24h | 1 |
| 2026-06-05 | 26 | 8–42 | 6.2 µg/m³ | 11.3 | 24h | 1 |
| 2026-06-04 | 14 | 2–25 | 3.4 µg/m³ | 5.5 | 24h | 1 |
| 2026-06-03 | 12 | 1–25 | 3.0 µg/m³ | 4.1 | 24h | 1 |
| 2026-06-02 | 23 | 10–36 | 5.4 µg/m³ | 8.2 | 24h | 1 |
| 2026-06-01 | 30 | 17–45 | 7.1 µg/m³ | 11.3 | 21h | 1 |
| 2026-05-31 | 24 | 9–62 | 5.8 µg/m³ | 8.9 | 24h | 1 |
| 2026-05-30 | 12 | 2–26 | 2.8 µg/m³ | 4.1 | 20h | 1 |
| 2026-05-29 | 11 | 3–23 | 2.6 µg/m³ | 4.2 | 16h | 1 |
| 2026-05-28 | 10 | 3–15 | 2.3 µg/m³ | 3.7 | 13h | 1 |
| 2026-05-27 | 7 | 1–30 | 1.7 µg/m³ | 3.2 | 24h | 1 |
| 2026-05-26 | 4 | 1–13 | 0.9 µg/m³ | 2.5 | 5h | 1 |