Air Quality History for Portland, United States
Historical PM2.5 and AQI trend from monitoring stations near Portland, United States.
31
Current AQI
Good CAMS model
Good CAMS model
Air Quality Index Station
227hPM2.5 Station
227h · 1 stationTemperature GFS model
80ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | Hours | Stations |
|---|---|---|---|---|---|
| 2026-06-09 | 28 | 10–52 | 6.7 µg/m³ | 9h | 1 |
| 2026-06-08 | 46 | 16–80 | 12.2 µg/m³ | 9h | 1 |
| 2026-06-07 | 39 | 13–61 | 9.8 µg/m³ | 12h | 1 |
| 2026-06-06 | 43 | 25–63 | 10.9 µg/m³ | 16h | 1 |
| 2026-06-05 | 36 | 7–56 | 8.8 µg/m³ | 10h | 1 |
| 2026-06-04 | 33 | 5–64 | 8.1 µg/m³ | 18h | 1 |
| 2026-06-03 | 28 | 5–41 | 6.7 µg/m³ | 13h | 1 |
| 2026-06-02 | 31 | 13–46 | 7.4 µg/m³ | 14h | 1 |
| 2026-06-01 | 30 | 13–53 | 7.1 µg/m³ | 10h | 1 |
| 2026-05-31 | 27 | 8–38 | 6.6 µg/m³ | 11h | 1 |
| 2026-05-30 | 32 | 9–53 | 7.7 µg/m³ | 11h | 1 |
| 2026-05-29 | 27 | 5–59 | 6.6 µg/m³ | 12h | 1 |
| 2026-05-28 | 20 | 8–43 | 4.7 µg/m³ | 12h | 1 |
| 2026-05-27 | 20 | 5–38 | 4.7 µg/m³ | 8h | 1 |
| 2026-05-26 | 20 | 13–26 | 4.8 µg/m³ | 9h | 1 |
| 2026-05-25 | 32 | 12–63 | 8.0 µg/m³ | 9h | 1 |
| 2026-05-24 | 17 | 7–34 | 4.0 µg/m³ | 12h | 1 |
| 2026-05-23 | 21 | 11–40 | 5.0 µg/m³ | 9h | 1 |
| 2026-05-22 | 18 | 9–34 | 4.4 µg/m³ | 11h | 1 |
| 2026-05-21 | 24 | 9–38 | 5.8 µg/m³ | 11h | 1 |
| 2026-05-20 | 22 | 22–22 | 5.3 µg/m³ | 1h | 1 |