Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-26 00:00 | 38.7 | 15.9 | 1.7 | - | 13.6 | 7.6 |
| 2024-04-25 23:00 | 34.2 | 14.0 | 1.6 | - | 14.7 | 9.6 |
| 2024-04-25 22:00 | 33.1 | 12.3 | 1.6 | - | 9.4 | 4.9 |
| 2024-04-25 21:00 | 24.0 | 20.2 | 1.5 | - | 11.0 | 6.8 |
| 2024-04-25 20:00 | 21.4 | 26.4 | 1.5 | - | 11.4 | 6.1 |
| 2024-04-25 19:00 | 25.6 | 24.5 | 1.4 | - | 11.7 | 6.3 |
| 2024-04-25 18:00 | 28.8 | 28.0 | 1.7 | - | 12.8 | 7.0 |
| 2024-04-25 17:00 | 31.9 | 32.4 | 1.7 | - | 10.3 | 4.7 |
| 2024-04-25 16:00 | 38.3 | 44.5 | 1.8 | - | 19.5 | 6.6 |
| 2024-04-25 15:00 | 42.6 | 46.8 | 1.6 | - | 23.3 | 7.2 |
| 2024-04-25 14:00 | 16.5 | 68.0 | 1.2 | - | 9.3 | 3.4 |
| 2024-04-25 13:00 | 13.7 | 37.2 | 1.2 | - | 11.6 | 8.1 |
| 2024-04-25 12:00 | 16.1 | 34.0 | 1.3 | - | 16.2 | 11.4 |
| 2024-04-25 11:00 | 38.7 | 20.5 | 1.4 | - | 16.4 | 9.3 |
| 2024-04-25 10:00 | 46.3 | 21.9 | 1.6 | - | 19.0 | 10.8 |
| 2024-04-25 09:00 | 66.4 | 26.8 | 1.7 | - | 12.5 | 5.0 |
| 2024-04-25 08:00 | 51.7 | 44.3 | 1.3 | - | 13.0 | 7.1 |
| 2024-04-25 07:00 | 25.3 | 81.9 | 1.3 | - | 7.6 | 4.9 |
| 2024-04-25 06:00 | 13.2 | 96.4 | 1.3 | - | 9.3 | 5.0 |
| 2024-04-25 05:00 | 11.5 | 75.1 | 1.3 | - | 18.8 | 9.3 |
| 2024-04-25 04:00 | 11.7 | 76.1 | 1.2 | - | 21.1 | 9.9 |
| 2024-04-25 03:00 | 14.0 | 74.7 | 1.3 | - | 20.7 | 9.8 |
| 2024-04-25 02:00 | 20.2 | 73.1 | 1.3 | - | 21.1 | 10.0 |
| 2024-04-25 01:00 | 21.2 | 73.1 | 1.4 | - | 31.0 | 18.2 |
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.