Changyŏn AQI History
Hourly air quality data for the past 24 hours in Changyŏn, Hwangnam.
24-Hour Summary
Average AQI
75
Peak AQI
138
Best AQI
28
Hourly AQI Data
| Time | AQI | Category | PM2.5 | PM10 |
|---|---|---|---|---|
| 06:00 pm | 138 | Unhealthy for Sensitive Groups | 50.6 | 71.5 |
| 07:00 pm | 138 | Unhealthy for Sensitive Groups | 50.6 | 67.8 |
| 08:00 pm | 130 | Unhealthy for Sensitive Groups | 47.3 | 64.3 |
| 09:00 pm | 125 | Unhealthy for Sensitive Groups | 45.2 | 63.6 |
| 10:00 pm | 118 | Unhealthy for Sensitive Groups | 42.5 | 60.5 |
| 11:00 pm | 110 | Unhealthy for Sensitive Groups | 39.1 | 56.1 |
| 12:00 am | 95 | Moderate | 32.7 | 48.4 |
| 01:00 am | 85 | Moderate | 27.1 | 39.1 |
| 02:00 am | 76 | Moderate | 22.5 | 30.9 |
| 03:00 am | 70 | Moderate | 19.4 | 25.6 |
| 04:00 am | 66 | Moderate | 17.0 | 22.3 |
| 05:00 am | 63 | Moderate | 15.7 | 20.5 |
| 06:00 am | 63 | Moderate | 15.5 | 20.5 |
| 07:00 am | 62 | Moderate | 14.8 | 18.9 |
| 08:00 am | 61 | Moderate | 14.6 | 19.4 |
| 09:00 am | 28 | Good | 5.1 | 6.5 |
| 10:00 am | 44 | Good | 7.9 | 11.4 |
| 11:00 am | 49 | Good | 8.9 | 13.6 |
| 12:00 pm | 52 | Moderate | 9.8 | 16.2 |
| 01:00 pm | 53 | Moderate | 10.2 | 16.1 |
| 02:00 pm | 54 | Moderate | 10.8 | 15.6 |
| 03:00 pm | 56 | Moderate | 11.9 | 16.8 |
| 04:00 pm | 58 | Moderate | 13.1 | 18.5 |
| 05:00 pm | 61 | Moderate | 14.3 | 20.2 |
| 06:00 pm | 63 | Moderate | 15.5 | 21.9 |
| 07:00 pm | 66 | Moderate | 17.3 | 24.4 |
| 08:00 pm | 69 | Moderate | 18.9 | 26.7 |
| 09:00 pm | 61 | Moderate | 14.6 | 20.3 |
| 10:00 pm | 64 | Moderate | 16.2 | 22.5 |
| 11:00 pm | 67 | Moderate | 17.5 | 24.3 |
| 12:00 am | 69 | Moderate | 18.7 | 26.1 |
| 01:00 am | 71 | Moderate | 19.9 | 27.9 |
| 02:00 am | 73 | Moderate | 21.0 | 29.6 |
| 03:00 am | 74 | Moderate | 21.7 | 30.6 |
| 04:00 am | 76 | Moderate | 22.5 | 31.9 |
| 05:00 am | 76 | Moderate | 22.3 | 31.4 |
| 06:00 am | 75 | Moderate | 22.1 | 31.7 |
| 07:00 am | 72 | Moderate | 20.6 | 30.6 |
| 08:00 am | 77 | Moderate | 22.8 | 35.5 |
| 09:00 am | 88 | Moderate | 28.9 | 48.1 |
| 10:00 am | 90 | Moderate | 30.2 | 46.9 |
| 11:00 am | 88 | Moderate | 29.2 | 42.5 |
| 12:00 pm | 84 | Moderate | 26.7 | 37.4 |
| 01:00 pm | 78 | Moderate | 23.8 | 32.8 |
| 02:00 pm | 74 | Moderate | 21.2 | 29.3 |
| 03:00 pm | 69 | Moderate | 18.8 | 26.0 |
| 04:00 pm | 66 | Moderate | 16.9 | 23.5 |
| 05:00 pm | 64 | Moderate | 15.9 | 22.0 |
| 06:00 pm | 63 | Moderate | 15.8 | 21.7 |
| 07:00 pm | 64 | Moderate | 16.3 | 22.1 |
| 08:00 pm | 66 | Moderate | 17.3 | 23.2 |
| 09:00 pm | 67 | Moderate | 17.5 | 23.3 |
| 10:00 pm | 69 | Moderate | 18.5 | 24.3 |
| 11:00 pm | 71 | Moderate | 20.0 | 25.8 |
| 12:00 am | 73 | Moderate | 21.1 | 27.2 |
| 01:00 am | 74 | Moderate | 21.7 | 28.1 |
| 02:00 am | 75 | Moderate | 22.1 | 29.3 |
| 03:00 am | 77 | Moderate | 22.8 | 30.5 |
| 04:00 am | 78 | Moderate | 23.5 | 31.9 |
| 05:00 am | 79 | Moderate | 24.0 | 32.9 |
| 06:00 am | 79 | Moderate | 23.9 | 33.1 |
| 07:00 am | 74 | Moderate | 21.5 | 29.6 |
| 08:00 am | 77 | Moderate | 22.9 | 32.2 |
| 09:00 am | 81 | Moderate | 25.4 | 36.6 |
| 10:00 am | 76 | Moderate | 22.7 | 32.2 |
| 11:00 am | 72 | Moderate | 20.6 | 29.3 |
| 12:00 pm | 70 | Moderate | 19.5 | 27.9 |
| 01:00 pm | 70 | Moderate | 19.2 | 27.6 |
| 02:00 pm | 69 | Moderate | 18.7 | 27.2 |
| 03:00 pm | 67 | Moderate | 17.9 | 26.1 |
| 04:00 pm | 65 | Moderate | 16.8 | 24.3 |
| 05:00 pm | 64 | Moderate | 15.9 | 22.9 |
| 06:00 pm | 64 | Moderate | 15.9 | 22.7 |
| 07:00 pm | 65 | Moderate | 16.4 | 23.4 |
| 08:00 pm | 66 | Moderate | 17.0 | 24.1 |
| 09:00 pm | 68 | Moderate | 18.4 | 25.9 |
| 10:00 pm | 70 | Moderate | 19.5 | 27.4 |
| 11:00 pm | 72 | Moderate | 20.3 | 28.2 |
| 12:00 am | 72 | Moderate | 20.3 | 27.9 |
| 01:00 am | 72 | Moderate | 20.3 | 27.5 |
| 02:00 am | 72 | Moderate | 20.2 | 27.5 |
| 03:00 am | 71 | Moderate | 20.0 | 27.1 |
| 04:00 am | 71 | Moderate | 19.8 | 26.8 |
| 05:00 am | 71 | Moderate | 19.7 | 26.8 |
| 06:00 am | 71 | Moderate | 19.8 | 27.0 |
| 07:00 am | 69 | Moderate | 19.0 | 26.0 |
| 08:00 am | 66 | Moderate | 17.4 | 23.7 |
| 09:00 am | 87 | Moderate | 28.5 | 41.4 |
| 10:00 am | 86 | Moderate | 28.1 | 41.0 |
| 11:00 am | 84 | Moderate | 26.8 | 38.5 |
| 12:00 pm | 81 | Moderate | 25.4 | 36.3 |
| 01:00 pm | 79 | Moderate | 23.9 | 34.1 |
| 02:00 pm | 75 | Moderate | 22.1 | 31.5 |
| 03:00 pm | 71 | Moderate | 20.1 | 29.0 |
| 04:00 pm | 69 | Moderate | 18.5 | 26.8 |
| 05:00 pm | 67 | Moderate | 17.5 | 25.4 |
| 06:00 pm | 66 | Moderate | 17.1 | 24.8 |
| 07:00 pm | 66 | Moderate | 17.0 | 24.7 |
| 08:00 pm | 68 | Moderate | 18.3 | 25.6 |
| 09:00 pm | 75 | Moderate | 21.8 | 29.3 |
| 10:00 pm | 78 | Moderate | 23.7 | 31.4 |
| 11:00 pm | 81 | Moderate | 25.2 | 33.2 |
| 12:00 am | 83 | Moderate | 26.1 | 34.1 |
| 01:00 am | 85 | Moderate | 27.1 | 34.8 |
| 02:00 am | 92 | Moderate | 31.2 | 38.4 |
| 03:00 am | 101 | Unhealthy for Sensitive Groups | 35.7 | 42.7 |
| 04:00 am | 108 | Unhealthy for Sensitive Groups | 38.2 | 45.2 |
| 05:00 am | 109 | Unhealthy for Sensitive Groups | 38.8 | 46.0 |
| 06:00 am | 109 | Unhealthy for Sensitive Groups | 38.9 | 46.2 |
| 07:00 am | 97 | Moderate | 33.6 | 38.8 |
| 08:00 am | 85 | Moderate | 27.1 | 33.6 |
| 09:00 am | 81 | Moderate | 25.0 | 35.3 |
| 10:00 am | 86 | Moderate | 27.8 | 40.5 |
| 11:00 am | 89 | Moderate | 29.6 | 43.2 |
| 12:00 pm | 86 | Moderate | 27.8 | 41.2 |
| 01:00 pm | 79 | Moderate | 24.3 | 37.7 |
| 02:00 pm | 75 | Moderate | 22.2 | 35.3 |
| 03:00 pm | 74 | Moderate | 21.3 | 33.9 |
| 04:00 pm | 74 | Moderate | 21.2 | 32.9 |
| 05:00 pm | 75 | Moderate | 21.9 | 32.6 |
| 06:00 pm | 77 | Moderate | 22.8 | 32.5 |
| 07:00 pm | 78 | Moderate | 23.6 | 31.9 |
| 08:00 pm | 78 | Moderate | 23.4 | 30.0 |
| 09:00 pm | 74 | Moderate | 21.4 | 27.6 |
| 10:00 pm | 78 | Moderate | 23.7 | 29.3 |
| 11:00 pm | 83 | Moderate | 26.4 | 31.3 |
| 12:00 am | 88 | Moderate | 28.7 | 33.6 |
| 01:00 am | 86 | Moderate | 28.1 | 33.3 |
| 02:00 am | 84 | Moderate | 26.7 | 32.7 |
| 03:00 am | 82 | Moderate | 25.7 | 32.2 |
| 04:00 am | 82 | Moderate | 25.8 | 32.4 |
| 05:00 am | 81 | Moderate | 25.0 | 31.4 |
| 06:00 am | 78 | Moderate | 23.7 | 29.7 |
| 07:00 am | 73 | Moderate | 20.9 | 26.5 |
| 08:00 am | 67 | Moderate | 17.6 | 22.5 |
| 09:00 am | 60 | Moderate | 13.9 | 20.8 |
| 10:00 am | 58 | Moderate | 13.0 | 22.0 |
| 11:00 am | 57 | Moderate | 12.5 | 22.6 |
| 12:00 pm | 57 | Moderate | 12.4 | 23.5 |
| 01:00 pm | 57 | Moderate | 12.4 | 24.5 |
| 02:00 pm | 56 | Moderate | 11.8 | 22.8 |
| 03:00 pm | 54 | Moderate | 10.9 | 20.1 |
| 04:00 pm | 53 | Moderate | 10.1 | 17.8 |
| 05:00 pm | 53 | Moderate | 10.0 | 16.4 |
| 06:00 pm | 53 | Moderate | 10.1 | 15.8 |
| 07:00 pm | 53 | Moderate | 10.1 | 15.1 |
| 08:00 pm | 52 | Moderate | 9.9 | 14.3 |
| 09:00 pm | 62 | Moderate | 15.2 | 20.0 |
| 10:00 pm | 63 | Moderate | 15.5 | 20.0 |
| 11:00 pm | 66 | Moderate | 17.2 | 21.4 |
| 12:00 am | 72 | Moderate | 20.3 | 24.3 |
| 01:00 am | 81 | Moderate | 25.0 | 28.7 |
| 02:00 am | 85 | Moderate | 27.6 | 31.7 |
| 03:00 am | 89 | Moderate | 29.7 | 33.9 |
| 04:00 am | 92 | Moderate | 31.3 | 35.7 |
| 05:00 am | 95 | Moderate | 32.9 | 37.7 |
| 06:00 am | 98 | Moderate | 34.3 | 40.4 |
| 07:00 am | 101 | Unhealthy for Sensitive Groups | 35.6 | 42.0 |
| 08:00 am | 98 | Moderate | 34.3 | 41.0 |
| 09:00 am | 91 | Moderate | 30.4 | 37.6 |
| 10:00 am | 82 | Moderate | 25.8 | 32.7 |
| 11:00 am | 75 | Moderate | 22.2 | 28.6 |
| 12:00 pm | 77 | Moderate | 23.3 | 29.9 |
| 01:00 pm | 76 | Moderate | 22.6 | 28.9 |
| 02:00 pm | 76 | Moderate | 22.3 | 28.1 |
| 03:00 pm | 73 | Moderate | 21.1 | 26.1 |
| 04:00 pm | 67 | Moderate | 17.6 | 21.4 |
| 05:00 pm | 55 | Moderate | 11.0 | 13.2 |