Air Quality History for Redwood City, United States
Historical PM2.5 and AQI trend from monitoring stations near Redwood City, United States.
25
Current AQI
Good Station
Good Station
Air Quality Index Station
333hPM2.5 Station
333h · 1 stationTemperature GFS model
56ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-07-22 | 5 | 5–5 | 1.1 µg/m³ | 1.1 | 1h | 1 |
| 2026-07-21 | 29 | 23–58 | 6.9 µg/m³ | 4.9 | 24h | 105 |
| 2026-07-20 | 22 | 17–69 | 5.5 µg/m³ | 2.8 | 24h | 99 |
| 2026-07-19 | 26 | 21–31 | 6.1 µg/m³ | 4.3 | 24h | 103 |
| 2026-07-18 | 28 | 22–39 | 6.6 µg/m³ | 3.4 | 24h | 104 |
| 2026-07-17 | 35 | 31–38 | 8.4 µg/m³ | 8.7 | 24h | 106 |
| 2026-07-16 | 42 | 25–247 | 15.8 µg/m³ | 6.8 | 24h | 98 |
| 2026-07-15 | 34 | 29–58 | 8.4 µg/m³ | 5.9 | 24h | 102 |
| 2026-07-14 | 32 | 30–40 | 7.7 µg/m³ | 9.1 | 24h | 101 |
| 2026-07-13 | 29 | 26–41 | 7.0 µg/m³ | 5.4 | 24h | 103 |
| 2026-07-12 | 24 | 21–28 | 5.7 µg/m³ | 2.7 | 24h | 98 |
| 2026-07-11 | 23 | 17–45 | 5.5 µg/m³ | 1.8 | 23h | 84 |
| 2026-07-10 | 37 | 27–59 | 9.0 µg/m³ | 7.0 | 24h | 98 |
| 2026-07-09 | 23 | 17–32 | 5.6 µg/m³ | 3.0 | 23h | 105 |
| 2026-07-08 | 26 | 23–29 | 6.3 µg/m³ | 3.4 | 22h | 107 |