Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-28 22:00 | 25.3 | 59.7 | 1.2 | - | 17.5 | 8.0 |
| 2024-04-28 21:00 | 30.1 | 59.3 | 1.3 | - | 12.9 | 6.4 |
| 2024-04-28 20:00 | 23.6 | 72.8 | 1.2 | - | 12.9 | 6.8 |
| 2024-04-28 19:00 | 24.5 | 80.9 | 1.1 | - | 8.6 | 3.9 |
| 2024-04-28 18:00 | 23.0 | 88.2 | 1.2 | - | 9.5 | 5.4 |
| 2024-04-28 17:00 | 26.6 | 82.3 | 1.2 | - | 12.3 | 7.5 |
| 2024-04-28 16:00 | 33.2 | 78.3 | 1.3 | - | 7.5 | 3.6 |
| 2024-04-28 15:00 | 27.1 | 84.8 | 1.3 | - | 5.7 | 4.0 |
| 2024-04-28 14:00 | 23.3 | 90.8 | 1.2 | - | 4.9 | 2.2 |
| 2024-04-28 13:00 | 21.8 | 95.9 | 1.1 | - | 12.2 | 5.7 |
| 2024-04-28 12:00 | 20.2 | 101.9 | 1.1 | - | 14.5 | 5.7 |
| 2024-04-28 11:00 | 22.1 | 92.2 | 1.1 | - | 17.0 | 5.7 |
| 2024-04-28 10:00 | 19.9 | 93.7 | 1.1 | - | 11.3 | 2.2 |
| 2024-04-28 09:00 | 13.1 | 100.1 | 1.1 | - | 6.4 | 2.2 |
| 2024-04-28 08:00 | 10.8 | 102.0 | 1.1 | - | 8.1 | 4.4 |
| 2024-04-28 07:00 | 14.9 | 89.5 | 1.2 | - | 9.3 | 3.2 |
| 2024-04-28 06:00 | 10.6 | 74.2 | 1.2 | - | 15.8 | 5.3 |
| 2024-04-28 05:00 | 10.6 | 32.5 | 1.3 | - | 16.9 | 7.2 |
| 2024-04-28 04:00 | 10.0 | 34.4 | 1.4 | - | 11.5 | 2.7 |
| 2024-04-28 03:00 | 14.7 | 28.0 | 1.4 | - | 15.0 | 3.7 |
| 2024-04-28 02:00 | 19.7 | 23.4 | 1.5 | - | 15.5 | 4.2 |
| 2024-04-28 01:00 | - | 27.7 | - | - | 13.5 | 3.1 |
| 2024-04-28 00:00 | 11.8 | 28.2 | 1.1 | - | 16.6 | 5.5 |
| 2024-04-27 23:00 | 11.0 | 32.4 | 1.2 | - | 19.9 | 7.0 |
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.