Past 24 Hours Pollutant Concentration Summary
Southern
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-27 23:00 | 13.2 | 28.5 | 1.1 | 384.2 | 23.9 | 8.8 |
| 2024-04-27 22:00 | 12.1 | 30.5 | 1.1 | 384.9 | 20.6 | 5.9 |
| 2024-04-27 21:00 | 13.3 | 27.9 | 0.9 | 393.0 | 20.5 | 7.4 |
| 2024-04-27 20:00 | 21.0 | 22.0 | 0.6 | 403.9 | 21.0 | 8.8 |
| 2024-04-27 19:00 | 27.8 | 18.3 | 0.6 | 405.9 | 24.4 | 7.0 |
| 2024-04-27 18:00 | 31.7 | 17.0 | 0.9 | 416.1 | 28.9 | 11.3 |
| 2024-04-27 17:00 | 28.1 | 21.2 | 1.1 | 425.6 | 26.6 | 10.1 |
| 2024-04-27 16:00 | 26.3 | 23.3 | 1.3 | 427.3 | 23.9 | 6.8 |
| 2024-04-27 15:00 | 24.0 | 28.3 | 1.7 | 425.2 | 25.4 | 8.7 |
| 2024-04-27 14:00 | 20.5 | 32.1 | 1.7 | 422.2 | 21.5 | 10.7 |
| 2024-04-27 13:00 | 15.7 | 37.6 | 0.3 | 419.8 | 19.2 | 11.3 |
| 2024-04-27 12:00 | 28.4 | 24.7 | 0.4 | 421.6 | 24.4 | 13.6 |
| 2024-04-27 11:00 | 29.5 | 18.0 | 0.5 | 449.4 | 25.4 | 11.5 |
| 2024-04-27 10:00 | 31.6 | 14.8 | 0.7 | 460.8 | 25.7 | 7.1 |
| 2024-04-27 09:00 | 34.2 | 12.9 | 0.4 | 466.6 | 25.7 | 6.6 |
| 2024-04-27 08:00 | 27.3 | 17.7 | 0.3 | 412.2 | 24.2 | 7.4 |
| 2024-04-27 07:00 | 34.9 | 9.5 | 0.4 | 407.8 | 20.8 | 3.0 |
| 2024-04-27 06:00 | 32.5 | 10.5 | 0.2 | 403.5 | 19.1 | 2.2 |
| 2024-04-27 05:00 | 24.3 | 17.6 | 0.0 | 384.1 | 21.3 | 7.1 |
| 2024-04-27 04:00 | 20.5 | 20.6 | 0.5 | 364.3 | 21.9 | 5.9 |
| 2024-04-27 03:00 | 15.5 | 22.6 | 0.0 | 382.4 | 22.2 | 5.8 |
| 2024-04-27 02:00 | 14.7 | 23.9 | 0.0 | 378.6 | 23.0 | 8.5 |
| 2024-04-27 01:00 | 19.5 | 22.1 | 0.0 | 394.6 | 22.8 | 12.5 |
| 2024-04-27 00:00 | 19.4 | 23.8 | 0.0 | 413.0 | 20.2 | 9.2 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) Concentration shown is in microgram per cubic metre (µg/m3).
(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.