Air Quality History for Union, United States
Historical PM2.5 and AQI trend from monitoring stations near Union, United States.
56
Current AQI
Moderate Station
Moderate Station
Air Quality Index Station
46hPM2.5 Station
46h · 1 stationTemperature GFS model
80ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-08-07 | 8 | 4–19 | 2.1 µg/m³ | 2.1 | 5h | 1 |
| 2026-08-06 | 29 | 5–57 | 7.2 µg/m³ | 7.6 | 7h | 1 |
| 2026-08-01 | 66 | 4–186 | 42.1 µg/m³ | 43.6 | 3h | 1 |
| 2026-07-31 | 39 | 20–64 | 9.9 µg/m³ | 2.7 | 5h | 3 |
| 2026-07-30 | 1 | 1–1 | 0.2 µg/m³ | — | 1h | 1 |
| 2026-07-28 | 47 | 22–94 | 14.6 µg/m³ | 16.1 | 3h | 1 |
| 2026-07-27 | 20 | 4–80 | 6.0 µg/m³ | 6.1 | 6h | 1 |
| 2026-07-26 | 12 | 7–17 | 2.9 µg/m³ | 2.9 | 2h | 1 |
| 2026-07-22 | 5 | 4–6 | 1.1 µg/m³ | 1.1 | 3h | 1 |
| 2026-07-21 | 15 | 4–25 | 3.7 µg/m³ | 3.9 | 5h | 1 |
| 2026-07-19 | 25 | 18–31 | 6.1 µg/m³ | 6.5 | 6h | 1 |