Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-04 08:00 | 63.1 | 20.1 | 5.5 | 682.0 | 18.8 | 14.3 |
| 2021-12-04 07:00 | 62.9 | 24.5 | 5.6 | 679.4 | 14.5 | 10.4 |
| 2021-12-04 06:00 | 41.3 | 36.4 | 5.3 | 612.1 | 13.1 | 8.8 |
| 2021-12-04 05:00 | 25.0 | 56.3 | 5.8 | 558.3 | 12.4 | 8.2 |
| 2021-12-04 04:00 | 22.6 | 63.4 | 6.5 | 562.9 | 15.5 | 10.4 |
| 2021-12-04 03:00 | 27.7 | 59.5 | 6.9 | 585.6 | 19.7 | 13.8 |
| 2021-12-04 02:00 | 47.2 | 37.2 | 7.4 | 656.6 | 15.1 | 7.3 |
| 2021-12-04 01:00 | - | - | - | - | 13.6 | 5.0 |
| 2021-12-04 00:00 | 79.5 | 15.4 | 6.6 | 772.5 | 14.5 | 6.5 |
| 2021-12-03 23:00 | 75.4 | 22.1 | 5.6 | 741.0 | 16.3 | 11.2 |
| 2021-12-03 22:00 | 74.1 | 24.6 | 5.3 | 763.5 | 18.4 | 7.8 |
| 2021-12-03 21:00 | 71.1 | 27.9 | 5.0 | 735.6 | 24.7 | 13.1 |
| 2021-12-03 20:00 | 83.3 | 18.1 | 5.3 | 798.7 | 26.9 | 11.7 |
| 2021-12-03 19:00 | 87.7 | 16.3 | 5.3 | 761.3 | 29.5 | 10.1 |
| 2021-12-03 18:00 | 58.9 | 51.3 | 5.3 | 625.7 | 27.8 | 5.9 |
| 2021-12-03 17:00 | 55.8 | 64.6 | 5.4 | 595.7 | 25.1 | 6.3 |
| 2021-12-03 16:00 | 49.9 | 68.7 | 5.6 | 596.3 | 23.7 | 7.0 |
| 2021-12-03 15:00 | 39.1 | 77.4 | 5.3 | 569.5 | 29.7 | 9.1 |
| 2021-12-03 14:00 | 41.3 | 82.1 | 5.7 | 571.8 | 33.4 | 13.5 |
| 2021-12-03 13:00 | 53.0 | 65.2 | 5.7 | 629.4 | - | - |
| 2021-12-03 12:00 | 47.7 | 57.5 | 5.9 | 609.5 | - | - |
| 2021-12-03 11:00 | 40.3 | 56.2 | 5.6 | 580.4 | - | - |
| 2021-12-03 10:00 | 46.0 | 46.9 | 5.8 | 652.4 | 20.0 | 5.8 |
| 2021-12-03 09:00 | 47.2 | 43.8 | 6.3 | 626.4 | 22.6 | 13.3 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(3) Concentration shown is in µg/m3.
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.
