Past 24 Hours Pollutant Concentration Summary
Southern
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-09 07:00 | 19.4 | 127.6 | 1.1 | 751.1 | 27.8 | 10.6 |
| 2024-05-09 06:00 | 11.7 | 134.3 | 1.4 | 716.7 | 29.7 | 16.2 |
| 2024-05-09 05:00 | 7.7 | 137.2 | 1.6 | 719.5 | 30.5 | 18.7 |
| 2024-05-09 04:00 | 10.8 | 129.6 | 2.3 | 719.1 | 30.8 | 13.9 |
| 2024-05-09 03:00 | 6.9 | 135.7 | 1.3 | 697.7 | 26.4 | 4.5 |
| 2024-05-09 02:00 | 7.0 | 137.5 | 1.1 | 714.7 | 22.3 | 4.5 |
| 2024-05-09 01:00 | 9.8 | 139.5 | 1.3 | 735.8 | 23.1 | 10.3 |
| 2024-05-09 00:00 | 10.2 | 143.7 | 1.4 | 757.0 | 25.6 | 16.3 |
| 2024-05-08 23:00 | 12.9 | 147.5 | 1.2 | 789.7 | 30.0 | 19.3 |
| 2024-05-08 22:00 | 13.4 | 145.1 | 1.5 | 785.0 | 35.4 | 22.9 |
| 2024-05-08 21:00 | 13.0 | 144.9 | 1.7 | 768.7 | 38.8 | 27.0 |
| 2024-05-08 20:00 | 19.3 | 144.3 | 2.1 | 822.0 | 27.5 | 23.4 |
| 2024-05-08 19:00 | 22.2 | 150.9 | 2.6 | 846.9 | 19.3 | 14.0 |
| 2024-05-08 18:00 | 25.5 | 131.1 | 2.1 | 816.7 | 30.2 | 7.8 |
| 2024-05-08 17:00 | 22.6 | 132.6 | 2.1 | 777.3 | 34.6 | 19.3 |
| 2024-05-08 16:00 | 20.3 | 115.9 | 1.8 | 714.0 | 27.9 | 19.3 |
| 2024-05-08 15:00 | 21.2 | 119.3 | 2.3 | 726.9 | 22.7 | 17.4 |
| 2024-05-08 14:00 | 21.3 | 116.9 | 2.5 | 727.2 | 21.4 | 17.3 |
| 2024-05-08 13:00 | 26.8 | 101.1 | 1.6 | 721.1 | 21.4 | 19.0 |
| 2024-05-08 12:00 | 30.3 | 87.9 | 1.2 | 715.0 | 24.6 | 20.8 |
| 2024-05-08 11:00 | 34.4 | 78.3 | 1.2 | 717.7 | 26.0 | 17.2 |
| 2024-05-08 10:00 | 25.0 | 84.4 | 1.1 | 682.7 | 26.9 | 19.5 |
| 2024-05-08 09:00 | 28.1 | 76.5 | 0.8 | 695.3 | 23.8 | 16.2 |
| 2024-05-08 08:00 | 24.6 | 76.7 | 0.6 | 679.8 | 23.3 | 17.5 |
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.