Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-06-05 09:00 | 29.3 | 21.5 | 3.1 | 710.1 | 15.5 | 9.5 |
| 2023-06-05 08:00 | 29.7 | 18.1 | 2.8 | 715.9 | 15.0 | 9.5 |
| 2023-06-05 07:00 | 26.4 | 17.7 | 2.4 | 679.6 | 11.5 | 7.9 |
| 2023-06-05 06:00 | 12.6 | 29.4 | 2.4 | 594.1 | 11.8 | 8.5 |
| 2023-06-05 05:00 | 8.1 | 31.0 | 2.4 | 550.9 | 12.5 | 8.9 |
| 2023-06-05 04:00 | 5.9 | 36.1 | 2.4 | 554.4 | 12.2 | 8.8 |
| 2023-06-05 03:00 | 6.7 | 39.8 | 2.5 | 578.4 | 13.8 | 8.4 |
| 2023-06-05 02:00 | 10.0 | 40.4 | 3.9 | 548.9 | 13.3 | 8.4 |
| 2023-06-05 01:00 | - | - | - | - | 15.6 | 11.2 |
| 2023-06-05 00:00 | 17.7 | 29.9 | 2.3 | 592.9 | 15.0 | 9.9 |
| 2023-06-04 23:00 | 23.2 | 27.5 | 2.4 | 640.4 | 14.0 | 9.7 |
| 2023-06-04 22:00 | 22.9 | 29.0 | 2.4 | 641.3 | 11.8 | 8.1 |
| 2023-06-04 21:00 | 21.8 | 30.8 | 2.4 | 659.4 | 12.1 | 7.2 |
| 2023-06-04 20:00 | 26.9 | 30.7 | 2.4 | 632.9 | 12.6 | 8.1 |
| 2023-06-04 19:00 | 24.2 | 33.7 | 2.4 | 652.7 | 10.9 | 7.4 |
| 2023-06-04 18:00 | 20.1 | 38.5 | 2.3 | 637.2 | 11.7 | 7.4 |
| 2023-06-04 17:00 | 22.2 | 38.7 | 2.5 | 629.2 | 12.1 | 7.0 |
| 2023-06-04 16:00 | 21.2 | 41.5 | 2.9 | 630.4 | 14.1 | 9.9 |
| 2023-06-04 15:00 | 21.9 | 42.5 | 2.9 | 640.3 | 14.5 | 10.6 |
| 2023-06-04 14:00 | 21.9 | 48.1 | 3.0 | 627.7 | 13.1 | 9.3 |
| 2023-06-04 13:00 | 23.9 | 47.9 | 3.2 | 662.1 | 15.0 | 11.1 |
| 2023-06-04 12:00 | 36.7 | 32.4 | 3.0 | 713.0 | 12.8 | 8.6 |
| 2023-06-04 11:00 | 28.5 | 38.3 | 1.8 | 676.3 | 15.2 | 10.9 |
| 2023-06-04 10:00 | 19.8 | 44.6 | 2.5 | 630.7 | 13.3 | 10.4 |
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.