Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-04 07:00 | 22.0 | 107.7 | 0.7 | 591.7 | 4.7 | 4.0 |
| 2024-05-04 06:00 | 12.1 | 120.9 | 0.7 | 537.7 | 8.8 | 6.6 |
| 2024-05-04 05:00 | 8.0 | 131.6 | 0.7 | 509.8 | 11.8 | 8.2 |
| 2024-05-04 04:00 | 7.5 | 139.4 | 0.7 | 487.4 | 16.2 | 9.5 |
| 2024-05-04 03:00 | 8.4 | 139.8 | 0.6 | 490.2 | 23.2 | 13.2 |
| 2024-05-04 02:00 | 11.3 | 144.0 | 1.0 | 494.7 | 26.5 | 14.4 |
| 2024-05-04 01:00 | - | - | - | - | 26.3 | 15.1 |
| 2024-05-04 00:00 | 20.8 | 134.3 | 0.8 | 333.8 | 31.3 | 15.7 |
| 2024-05-03 23:00 | 26.9 | 130.4 | 0.8 | 329.4 | 42.0 | 22.0 |
| 2024-05-03 22:00 | 29.3 | 126.1 | 0.6 | 486.6 | 39.5 | 22.1 |
| 2024-05-03 21:00 | 32.3 | 122.8 | 0.6 | 481.3 | 34.0 | 20.4 |
| 2024-05-03 20:00 | 34.5 | 115.9 | 0.7 | 467.2 | 32.4 | 17.0 |
| 2024-05-03 19:00 | 38.4 | 114.7 | 0.9 | 448.8 | 29.8 | 15.0 |
| 2024-05-03 18:00 | 43.0 | 116.7 | 0.9 | 433.2 | 27.5 | 15.0 |
| 2024-05-03 17:00 | 39.9 | 120.6 | 0.9 | 426.8 | 25.3 | 14.9 |
| 2024-05-03 16:00 | 33.6 | 131.4 | 1.1 | 422.7 | 24.9 | 15.6 |
| 2024-05-03 15:00 | 31.7 | 127.5 | 1.0 | 415.3 | 23.5 | 14.0 |
| 2024-05-03 14:00 | 30.4 | 126.0 | 1.2 | 425.6 | 23.6 | 12.9 |
| 2024-05-03 13:00 | 30.8 | 118.1 | 0.8 | 404.7 | 27.1 | 15.6 |
| 2024-05-03 12:00 | 27.7 | 116.6 | 0.5 | 399.4 | 26.8 | 14.4 |
| 2024-05-03 11:00 | 28.0 | 112.4 | 0.4 | 411.4 | 23.9 | 10.7 |
| 2024-05-03 10:00 | 32.5 | 103.7 | 0.7 | 441.4 | 21.9 | 10.0 |
| 2024-05-03 09:00 | 33.5 | 102.3 | 0.7 | 470.4 | 23.4 | 14.5 |
| 2024-05-03 08:00 | 30.4 | 106.6 | 0.8 | 518.5 | 22.0 | 14.4 |
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.