Past 24 Hours Pollutant Concentration Summary
Southern
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-01-30 06:00 | 21.4 | 61.8 | 4.1 | 327.7 | 34.1 | 20.4 |
| 2023-01-30 05:00 | 13.1 | 67.8 | 4.2 | 296.0 | 37.3 | 17.6 |
| 2023-01-30 04:00 | 12.5 | 69.8 | 4.1 | 301.0 | 41.3 | 17.1 |
| 2023-01-30 03:00 | 12.3 | 74.8 | 4.3 | 306.2 | 35.9 | 13.1 |
| 2023-01-30 02:00 | 13.4 | 79.1 | 4.2 | 312.5 | 30.9 | 12.6 |
| 2023-01-30 01:00 | 30.2 | 59.0 | 4.2 | 375.6 | 39.6 | 16.0 |
| 2023-01-30 00:00 | 47.4 | 44.2 | 4.6 | 439.6 | 44.9 | 16.6 |
| 2023-01-29 23:00 | 56.4 | 38.8 | 5.5 | 451.4 | 43.3 | 20.3 |
| 2023-01-29 22:00 | 58.9 | 38.7 | 6.1 | 446.2 | 39.8 | 19.9 |
| 2023-01-29 21:00 | 33.4 | 64.9 | 5.1 | 389.7 | 39.8 | 20.6 |
| 2023-01-29 20:00 | 18.9 | 83.2 | 4.4 | 362.0 | 48.3 | 20.5 |
| 2023-01-29 19:00 | 21.9 | 81.9 | 4.9 | 394.9 | 58.4 | 23.7 |
| 2023-01-29 18:00 | 21.9 | 107.8 | 5.8 | 364.7 | 60.1 | 27.5 |
| 2023-01-29 17:00 | 29.1 | 101.9 | 6.8 | 342.3 | 56.1 | 23.9 |
| 2023-01-29 16:00 | 21.3 | 107.8 | 5.8 | 340.6 | 56.7 | 20.7 |
| 2023-01-29 15:00 | 23.2 | 105.6 | 6.5 | 326.5 | 59.3 | 20.5 |
| 2023-01-29 14:00 | 30.2 | 92.0 | 7.0 | 352.0 | 57.1 | 23.6 |
| 2023-01-29 13:00 | 46.0 | 69.6 | 7.0 | 366.9 | 52.0 | 21.9 |
| 2023-01-29 12:00 | 37.2 | 73.6 | 4.9 | 378.8 | 46.3 | 19.6 |
| 2023-01-29 11:00 | 24.4 | 83.6 | 4.4 | 374.9 | 46.1 | 17.9 |
| 2023-01-29 10:00 | 23.0 | 82.5 | 4.6 | 363.5 | 51.2 | 18.5 |
| 2023-01-29 09:00 | 20.4 | 82.8 | 4.8 | 360.4 | 56.1 | 25.8 |
| 2023-01-29 08:00 | 18.2 | 83.5 | 4.6 | 348.4 | 57.7 | 24.0 |
| 2023-01-29 07:00 | 13.7 | 89.4 | 4.5 | 336.1 | 59.2 | 21.8 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(3) Concentration shown is in µg/m3.
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.