Air Quality History for Chapel Hill, United States
Historical PM2.5 and AQI trend from monitoring stations near Chapel Hill, United States.
41
Current AQI
Good Station
Good Station
Air Quality Index Station
151hPM2.5 Station
151h · 4 stationsTemperature GFS model
28ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | Hours | Stations |
|---|---|---|---|---|---|
| 2026-07-21 | 43 | 5–67 | 10.8 µg/m³ | 19h | 3 |
| 2026-07-20 | 45 | 9–98 | 12.0 µg/m³ | 21h | 3 |
| 2026-07-19 | 44 | 15–85 | 11.5 µg/m³ | 19h | 3 |
| 2026-07-18 | 50 | 21–89 | 13.2 µg/m³ | 22h | 3 |
| 2026-07-17 | 88 | 17–252 | 43.1 µg/m³ | 23h | 3 |
| 2026-07-16 | 70 | 17–290 | 30.0 µg/m³ | 24h | 4 |
| 2026-07-15 | 49 | 30–143 | 13.0 µg/m³ | 22h | 4 |
| 2026-07-14 | 78 | 78–78 | 24.9 µg/m³ | 1h | 5 |