Air Quality History for Union, United States
Historical PM2.5 and AQI trend from monitoring stations near Union, United States.
6
Current AQI
Good Station
Good Station
Air Quality Index Station
54hPM2.5 Station
54h · 1 stationTemperature GFS model
80ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-10-20 | 12 | 12–12 | 2.8 µg/m³ | 2.8 | 1h | 1 |
| 2026-10-19 | 14 | 2–27 | 3.5 µg/m³ | 4.0 | 2h | 1 |
| 2026-10-18 | 8 | 8–8 | 2.0 µg/m³ | 2.8 | 1h | 1 |
| 2026-10-16 | 12 | 10–15 | 3.0 µg/m³ | 3.0 | 3h | 1 |
| 2026-10-15 | 35 | 11–59 | 9.3 µg/m³ | 9.7 | 2h | 1 |
| 2026-10-14 | 16 | 7–29 | 3.9 µg/m³ | 4.1 | 8h | 1 |
| 2026-10-13 | 12 | 6–25 | 2.9 µg/m³ | 2.9 | 3h | 1 |
| 2026-10-10 | 8 | 8–8 | 1.8 µg/m³ | 1.8 | 1h | 1 |
| 2026-10-09 | 7 | 4–10 | 1.6 µg/m³ | 1.7 | 3h | 1 |
| 2026-10-08 | 10 | 4–17 | 2.5 µg/m³ | 2.5 | 2h | 1 |
| 2026-10-07 | 13 | 2–34 | 3.2 µg/m³ | 3.8 | 3h | 1 |
| 2026-10-05 | 29 | 6–115 | 9.7 µg/m³ | 11.4 | 5h | 1 |
| 2026-10-04 | 4 | 4–5 | 1.1 µg/m³ | 1.1 | 2h | 1 |
| 2026-10-02 | 54 | 33–67 | 14.7 µg/m³ | 15.0 | 12h | 1 |
| 2026-10-01 | 29 | 8–48 | 7.0 µg/m³ | 7.2 | 6h | 1 |