Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-09-21 22:00 | 46.1 | 2.9 | 5.5 | 623.6 | 22.9 | 15.2 |
| 2021-09-21 21:00 | 51.1 | 1.9 | 5.1 | 684.3 | 21.6 | 14.3 |
| 2021-09-21 20:00 | 54.2 | 1.1 | 5.3 | 672.5 | 16.8 | 11.0 |
| 2021-09-21 19:00 | 52.1 | 4.3 | 5.6 | 567.3 | 14.3 | 10.2 |
| 2021-09-21 18:00 | 73.9 | 7.8 | 7.7 | 564.9 | 17.2 | 11.8 |
| 2021-09-21 17:00 | 88.3 | 8.6 | 7.4 | 760.6 | 11.6 | 6.4 |
| 2021-09-21 16:00 | 51.3 | 18.8 | 5.1 | 515.3 | 13.6 | 7.9 |
| 2021-09-21 15:00 | 44.8 | 18.7 | 4.5 | 459.5 | 9.0 | 6.1 |
| 2021-09-21 14:00 | 50.0 | 23.3 | 4.6 | 487.1 | 6.1 | 4.4 |
| 2021-09-21 13:00 | 50.0 | 20.1 | 6.8 | 438.7 | - | - |
| 2021-09-21 12:00 | 54.2 | 13.1 | 6.9 | 513.8 | - | - |
| 2021-09-21 11:00 | 40.2 | 11.0 | 6.3 | 442.7 | - | - |
| 2021-09-21 10:00 | 37.8 | 9.4 | 5.6 | 468.0 | 7.2 | 5.2 |
| 2021-09-21 09:00 | 25.9 | 10.2 | 5.0 | 495.9 | 9.8 | 6.5 |
| 2021-09-21 08:00 | 22.3 | 4.4 | 5.0 | 561.8 | 10.3 | 5.3 |
| 2021-09-21 07:00 | 16.6 | 4.5 | 4.2 | 429.5 | 10.6 | 4.3 |
| 2021-09-21 06:00 | 11.4 | 8.1 | 4.2 | 364.3 | 11.7 | 5.2 |
| 2021-09-21 05:00 | 10.1 | 11.5 | 4.2 | 344.1 | 12.7 | 6.2 |
| 2021-09-21 04:00 | 10.8 | 12.1 | 4.3 | 365.5 | 10.0 | 3.8 |
| 2021-09-21 03:00 | 13.3 | 9.9 | 4.6 | 357.4 | 10.2 | 4.4 |
| 2021-09-21 02:00 | 22.2 | 5.3 | 4.5 | 422.0 | 9.6 | 4.2 |
| 2021-09-21 01:00 | - | - | - | - | 10.2 | 4.6 |
| 2021-09-21 00:00 | 30.2 | 3.6 | 4.8 | 502.7 | 12.3 | 6.0 |
| 2021-09-20 23:00 | 39.0 | 2.9 | 4.9 | 564.3 | 13.7 | 7.0 |
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.
