Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-04 09:00 | 49.6 | 48.7 | 1.8 | - | 5.9 | 5.0 |
| 2024-05-04 08:00 | 33.9 | 67.6 | 1.8 | - | 3.0 | 1.5 |
| 2024-05-04 07:00 | 13.9 | 94.0 | 1.7 | - | 3.0 | 0.5 |
| 2024-05-04 06:00 | 11.7 | 98.1 | 1.8 | - | 3.8 | 2.1 |
| 2024-05-04 05:00 | 11.6 | 105.1 | 1.9 | - | 7.3 | 4.4 |
| 2024-05-04 04:00 | 9.9 | 113.4 | 2.0 | - | 18.8 | 10.8 |
| 2024-05-04 03:00 | 9.7 | 117.9 | 1.9 | - | 31.4 | 12.7 |
| 2024-05-04 02:00 | 10.4 | 123.4 | 2.1 | - | 34.2 | 13.7 |
| 2024-05-04 01:00 | - | 116.0 | - | - | 35.7 | 14.9 |
| 2024-05-04 00:00 | 24.3 | 102.9 | 1.9 | - | 41.8 | 18.2 |
| 2024-05-03 23:00 | 38.0 | 95.7 | 2.0 | - | 44.1 | 18.5 |
| 2024-05-03 22:00 | 39.4 | 93.6 | 2.0 | - | 43.5 | 17.0 |
| 2024-05-03 21:00 | 29.6 | 102.3 | 1.9 | - | 43.0 | 17.6 |
| 2024-05-03 20:00 | 54.4 | 77.5 | 1.9 | - | 46.7 | 17.9 |
| 2024-05-03 19:00 | 53.8 | 80.0 | 1.8 | - | 43.8 | 17.2 |
| 2024-05-03 18:00 | 53.2 | 81.3 | 1.9 | - | 35.5 | 14.2 |
| 2024-05-03 17:00 | 53.3 | 82.3 | 2.0 | - | 29.5 | 12.1 |
| 2024-05-03 16:00 | 47.1 | 93.0 | 2.1 | - | 31.1 | 14.8 |
| 2024-05-03 15:00 | 46.1 | 95.0 | 2.1 | - | 34.8 | 17.4 |
| 2024-05-03 14:00 | 38.7 | 98.8 | 2.0 | - | 34.9 | 14.6 |
| 2024-05-03 13:00 | 28.0 | 101.5 | 1.9 | - | 35.6 | 13.2 |
| 2024-05-03 12:00 | 34.5 | 87.8 | 1.8 | - | 37.8 | 14.2 |
| 2024-05-03 11:00 | 41.0 | 79.2 | 2.0 | - | 35.7 | 12.2 |
| 2024-05-03 10:00 | 33.9 | 80.2 | 1.7 | - | 30.5 | 11.4 |
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.