Air Quality History for Union, United States
Historical PM2.5 and AQI trend from monitoring stations near Union, United States.
31
Current AQI
Good Station
Good Station
Air Quality Index Station
69hPM2.5 Station
69h · 1 stationTemperature GFS model
28ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-05-29 | 6 | 5–7 | 1.5 µg/m³ | 1.5 | 2h | 1 |
| 2026-05-28 | 25 | 8–75 | 7.0 µg/m³ | 7.0 | 5h | 1 |
| 2026-05-27 | 21 | 4–52 | 5.0 µg/m³ | 5.1 | 21h | 1 |
| 2026-05-26 | 21 | 3–57 | 5.2 µg/m³ | 5.4 | 16h | 1 |
| 2026-05-25 | 41 | 11–184 | 16.3 µg/m³ | 16.9 | 18h | 1 |
| 2026-05-24 | 8 | 4–13 | 1.5 µg/m³ | 1.8 | 5h | 1 |
| 2026-05-23 | 4 | 4–5 | 1.1 µg/m³ | 1.2 | 2h | 1 |