Air Quality / York, Chester, and Lancaster
York, Chester, and Lancaster
South Carolina — EPA AirNow monitoring station
Current AQI (OZONE)
67
Moderate8/25/2026, 4:00:00 PM
Recent Readings
| Time | Pollutant | AQI | Category | Type |
|---|---|---|---|---|
| 8/25/2026, 4:00:00 PM | OZONE | 67 | Moderate | forecast |
| 8/24/2026, 7:00:00 PM | OZONE | 43 | Good | observation |
| 8/24/2026, 6:00:00 PM | OZONE | 41 | Good | observation |
| 8/24/2026, 5:00:00 PM | OZONE | 38 | Good | observation |
| 8/24/2026, 4:00:00 PM | OZONE | 33 | Good | observation |
| 8/24/2026, 4:00:00 PM | OZONE | 54 | Moderate | forecast |
| 8/24/2026, 3:00:00 PM | OZONE | 28 | Good | observation |
| 8/24/2026, 2:00:00 PM | OZONE | 26 | Good | observation |
| 8/24/2026, 1:00:00 PM | OZONE | 23 | Good | observation |
| 8/24/2026, 12:00:00 PM | OZONE | 19 | Good | observation |
| 8/24/2026, 11:00:00 AM | OZONE | 16 | Good | observation |
| 8/24/2026, 10:00:00 AM | OZONE | 18 | Good | observation |
| 8/24/2026, 9:00:00 AM | OZONE | 14 | Good | observation |
| 8/24/2026, 8:00:00 AM | OZONE | 14 | Good | observation |
| 8/24/2026, 7:00:00 AM | OZONE | 14 | Good | observation |
| 8/24/2026, 6:00:00 AM | OZONE | 17 | Good | observation |
| 8/24/2026, 5:00:00 AM | OZONE | 19 | Good | observation |
| 8/24/2026, 4:00:00 AM | OZONE | 23 | Good | observation |
| 8/24/2026, 3:00:00 AM | OZONE | 21 | Good | observation |
| 8/24/2026, 2:00:00 AM | OZONE | 25 | Good | observation |
| 8/24/2026, 1:00:00 AM | OZONE | 28 | Good | observation |
| 8/24/2026, 12:00:00 AM | OZONE | 31 | Good | observation |
| 8/23/2026, 11:00:00 PM | OZONE | 36 | Good | observation |
| 8/23/2026, 10:00:00 PM | OZONE | 36 | Good | observation |
| 8/23/2026, 9:00:00 PM | OZONE | 37 | Good | observation |
| 8/23/2026, 8:00:00 PM | OZONE | 40 | Good | observation |
| 8/23/2026, 7:00:00 PM | OZONE | 40 | Good | observation |
| 8/23/2026, 6:00:00 PM | OZONE | 37 | Good | observation |
| 8/23/2026, 5:00:00 PM | OZONE | 35 | Good | observation |
| 8/23/2026, 4:00:00 PM | OZONE | 40 | Good | observation |
| 8/23/2026, 4:00:00 PM | OZONE | 43 | Good | forecast |
| 8/23/2026, 3:00:00 PM | OZONE | 31 | Good | observation |
| 8/23/2026, 2:00:00 PM | OZONE | 27 | Good | observation |
| 8/23/2026, 1:00:00 PM | OZONE | 21 | Good | observation |
| 8/23/2026, 12:00:00 PM | OZONE | 16 | Good | observation |
| 8/23/2026, 11:00:00 AM | OZONE | 14 | Good | observation |
| 8/23/2026, 10:00:00 AM | OZONE | 13 | Good | observation |
| 8/23/2026, 9:00:00 AM | OZONE | 14 | Good | observation |
| 8/23/2026, 8:00:00 AM | OZONE | 10 | Good | observation |
| 8/23/2026, 7:00:00 AM | OZONE | 10 | Good | observation |
| 8/23/2026, 6:00:00 AM | OZONE | 12 | Good | observation |
| 8/23/2026, 5:00:00 AM | OZONE | 15 | Good | observation |
| 8/23/2026, 4:00:00 AM | OZONE | 15 | Good | observation |
| 8/23/2026, 3:00:00 AM | OZONE | 15 | Good | observation |
| 8/23/2026, 2:00:00 AM | OZONE | 19 | Good | observation |
| 8/22/2026, 4:00:00 PM | OZONE | 34 | Good | observation |
| 8/22/2026, 4:00:00 PM | OZONE | 51 | Moderate | forecast |
| 8/21/2026, 4:00:00 PM | OZONE | 49 | Good | observation |
Nearby Stations
Current AirNow data are preliminary and may be revised. Source: EPA AirNow and participating air quality agencies.