Air Quality History for Altadena, United States
Historical PM2.5 and AQI trend from monitoring stations near Altadena, United States.
27
Current AQI
Good Station
Good Station
Air Quality Index Station
452hPM2.5 Station
452h · 1 stationTemperature GFS model
80ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-05-30 | 9 | 4–38 | 2.3 µg/m³ | 2.7 | 19h | 1 |
| 2026-05-29 | 5 | 4–8 | 1.2 µg/m³ | 1.4 | 12h | 1 |
| 2026-05-28 | 6 | 4–17 | 1.4 µg/m³ | 1.6 | 16h | 1 |
| 2026-05-27 | 8 | 4–17 | 2.0 µg/m³ | 2.7 | 22h | 1 |
| 2026-05-26 | 17 | 8–25 | 4.1 µg/m³ | 4.8 | 24h | 1 |
| 2026-05-25 | 23 | 12–42 | 5.5 µg/m³ | 6.1 | 24h | 1 |
| 2026-05-24 | 52 | 33–70 | 13.7 µg/m³ | 14.6 | 24h | 1 |
| 2026-05-23 | 56 | 33–80 | 14.8 µg/m³ | 16.5 | 24h | 1 |
| 2026-05-22 | 53 | 23–74 | 14.6 µg/m³ | 15.9 | 22h | 1 |
| 2026-05-21 | 51 | 25–76 | 13.3 µg/m³ | 14.9 | 24h | 1 |
| 2026-05-20 | 64 | 8–119 | 20.1 µg/m³ | 21.8 | 24h | 1 |
| 2026-05-19 | 70 | 17–99 | 22.0 µg/m³ | 24.3 | 24h | 1 |
| 2026-05-18 | 64 | 50–89 | 18.5 µg/m³ | 20.9 | 24h | 1 |
| 2026-05-17 | 61 | 33–95 | 17.4 µg/m³ | 19.4 | 24h | 1 |
| 2026-05-16 | 44 | 29–53 | 10.5 µg/m³ | 11.8 | 24h | 1 |
| 2026-05-15 | 49 | 21–74 | 13.0 µg/m³ | 14.5 | 24h | 1 |
| 2026-05-14 | 32 | 12–57 | 7.9 µg/m³ | 8.5 | 24h | 1 |
| 2026-05-13 | 33 | 17–59 | 8.1 µg/m³ | 8.8 | 24h | 1 |
| 2026-05-12 | 70 | 4–110 | 22.4 µg/m³ | 25.5 | 24h | 1 |
| 2026-05-11 | 68 | 42–91 | 20.3 µg/m³ | 22.3 | 24h | 1 |
| 2026-05-10 | 80 | 80–80 | 26.0 µg/m³ | 26.0 | 1h | 1 |