Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-19 09:00 | 57.2 | 30.9 | 6.9 | 399.2 | 16.1 | 13.3 |
| 2024-04-19 08:00 | 43.4 | 33.9 | 6.3 | 350.4 | 12.6 | 10.3 |
| 2024-04-19 07:00 | 38.6 | 37.8 | 5.9 | 338.5 | 10.1 | 7.9 |
| 2024-04-19 06:00 | 30.1 | 37.9 | 5.6 | 309.6 | 12.7 | 10.7 |
| 2024-04-19 05:00 | 19.0 | 49.7 | 5.6 | 267.6 | 13.1 | 11.0 |
| 2024-04-19 04:00 | 25.5 | 42.6 | 5.8 | 289.0 | 15.3 | 12.2 |
| 2024-04-19 03:00 | 32.6 | 36.6 | 6.0 | 297.6 | 13.5 | 10.0 |
| 2024-04-19 02:00 | 26.2 | 48.4 | 5.6 | 297.7 | 15.7 | 12.2 |
| 2024-04-19 01:00 | 30.5 | 54.1 | 5.5 | 301.6 | 14.6 | 10.8 |
| 2024-04-19 00:00 | 41.8 | 53.5 | 5.8 | 364.3 | 15.9 | 11.2 |
| 2024-04-18 23:00 | 57.6 | 43.3 | 5.9 | 443.1 | 16.8 | 12.0 |
| 2024-04-18 22:00 | 74.6 | 30.8 | 6.4 | 516.1 | 17.3 | 12.7 |
| 2024-04-18 21:00 | 55.7 | 46.5 | 6.0 | 416.8 | 16.9 | 12.8 |
| 2024-04-18 20:00 | 55.5 | 56.6 | 6.0 | 390.9 | 12.9 | 9.5 |
| 2024-04-18 19:00 | 60.9 | 74.1 | 6.3 | 335.7 | 12.3 | 8.7 |
| 2024-04-18 18:00 | 95.4 | 58.2 | 7.3 | 312.3 | 16.0 | 11.2 |
| 2024-04-18 17:00 | 67.2 | 60.3 | 6.2 | 367.7 | 10.3 | 7.7 |
| 2024-04-18 16:00 | 45.0 | 87.1 | 5.5 | 299.3 | 8.6 | 6.3 |
| 2024-04-18 15:00 | 63.1 | 84.0 | 6.0 | 379.5 | 5.4 | 2.5 |
| 2024-04-18 14:00 | 34.8 | 84.9 | 6.2 | 308.9 | 15.7 | 10.9 |
| 2024-04-18 13:00 | - | 46.6 | 5.9 | 292.3 | 18.1 | 14.7 |
| 2024-04-18 12:00 | - | 55.1 | 5.9 | 287.5 | 20.6 | 15.9 |
| 2024-04-18 11:00 | 37.2 | 50.8 | 7.0 | 273.4 | 21.2 | 16.2 |
| 2024-04-18 10:00 | 46.7 | 40.8 | 6.8 | 286.1 | 21.6 | 16.6 |
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.