Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-28 19:00 | 27.2 | 98.2 | 5.6 | 371.4 | 5.9 | 3.3 |
| 2024-04-28 18:00 | 26.7 | 104.9 | 5.6 | 358.9 | 8.8 | 6.6 |
| 2024-04-28 17:00 | 27.7 | 100.8 | 5.4 | 382.7 | 9.5 | 7.4 |
| 2024-04-28 16:00 | 47.9 | 84.0 | 5.9 | 440.5 | 6.6 | 5.8 |
| 2024-04-28 15:00 | 45.8 | 90.9 | 5.9 | 423.4 | 6.1 | 5.4 |
| 2024-04-28 14:00 | 34.4 | 101.8 | 5.4 | 410.4 | 6.1 | 5.4 |
| 2024-04-28 13:00 | 29.9 | 108.7 | 5.6 | 372.5 | 10.7 | 7.5 |
| 2024-04-28 12:00 | 32.0 | 105.5 | 5.6 | 402.5 | 14.3 | 8.7 |
| 2024-04-28 11:00 | 31.3 | 103.1 | 5.7 | 414.4 | 14.4 | 6.5 |
| 2024-04-28 10:00 | 19.8 | 115.7 | 5.7 | 331.0 | 14.4 | 9.7 |
| 2024-04-28 09:00 | 18.1 | 119.3 | 5.5 | 311.0 | 3.6 | 1.2 |
| 2024-04-28 08:00 | 18.1 | 114.4 | 5.6 | 328.5 | 3.6 | 1.5 |
| 2024-04-28 07:00 | 15.8 | 97.5 | 5.9 | 306.6 | 14.0 | 8.6 |
| 2024-04-28 06:00 | 25.5 | 50.3 | 6.8 | 227.3 | 18.2 | 9.9 |
| 2024-04-28 05:00 | 31.0 | 35.3 | 7.3 | 192.4 | 18.7 | 10.5 |
| 2024-04-28 04:00 | 23.2 | 43.0 | 6.7 | 217.1 | 18.4 | 9.6 |
| 2024-04-28 03:00 | 23.9 | 42.0 | 6.4 | 229.8 | 19.1 | 9.3 |
| 2024-04-28 02:00 | 25.3 | 43.6 | 6.0 | 272.0 | 18.6 | 9.2 |
| 2024-04-28 01:00 | - | - | - | - | 16.7 | 7.9 |
| 2024-04-28 00:00 | 39.2 | 27.1 | 6.5 | 313.1 | 18.3 | 9.3 |
| 2024-04-27 23:00 | 37.0 | 28.6 | 6.4 | 306.8 | 22.6 | 12.7 |
| 2024-04-27 22:00 | 38.3 | 28.3 | 7.0 | 391.6 | 24.7 | 14.2 |
| 2024-04-27 21:00 | 48.5 | 24.2 | 7.8 | 430.9 | 24.5 | 13.5 |
| 2024-04-27 20:00 | 46.5 | 22.9 | 8.3 | 309.8 | 21.1 | 9.9 |
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.