Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-09-28 23:00 | 29.6 | 54.5 | 4.4 | 661.9 | 14.5 | 9.7 |
| 2023-09-28 22:00 | 34.4 | 57.1 | 4.7 | 676.0 | 17.0 | 12.6 |
| 2023-09-28 21:00 | 38.3 | 56.3 | 4.8 | 682.6 | 15.6 | 11.1 |
| 2023-09-28 20:00 | 41.0 | 58.6 | 4.8 | 677.6 | 16.3 | 12.1 |
| 2023-09-28 19:00 | 48.6 | 39.8 | 4.9 | 630.8 | 14.4 | 10.6 |
| 2023-09-28 18:00 | 43.1 | 40.7 | 4.9 | 596.1 | 14.9 | 11.5 |
| 2023-09-28 17:00 | 37.7 | 50.8 | 5.1 | 582.3 | 12.7 | 9.0 |
| 2023-09-28 16:00 | 30.5 | 57.9 | 5.1 | 579.0 | 14.3 | 10.4 |
| 2023-09-28 15:00 | 29.2 | 66.0 | 4.8 | 570.4 | 18.0 | 14.3 |
| 2023-09-28 14:00 | 28.7 | 62.9 | 4.9 | 564.6 | 14.7 | 11.5 |
| 2023-09-28 13:00 | 27.4 | 68.2 | 5.0 | 548.2 | 11.7 | 8.3 |
| 2023-09-28 12:00 | 27.8 | 68.0 | 5.0 | 571.8 | 14.3 | 10.0 |
| 2023-09-28 11:00 | 28.3 | 63.2 | 4.8 | 586.6 | 17.9 | 12.7 |
| 2023-09-28 10:00 | 33.4 | 44.2 | 5.3 | 680.1 | 14.4 | 9.8 |
| 2023-09-28 09:00 | 38.9 | 36.0 | 4.9 | 680.2 | 12.7 | 8.6 |
| 2023-09-28 08:00 | 31.5 | 39.6 | 4.9 | 675.4 | 12.8 | 9.1 |
| 2023-09-28 07:00 | 29.7 | 39.5 | 4.8 | 644.4 | 11.9 | 7.6 |
| 2023-09-28 06:00 | 14.1 | 51.5 | 4.8 | 601.3 | 15.5 | 10.7 |
| 2023-09-28 05:00 | 10.7 | 54.0 | 4.7 | 586.1 | 13.9 | 9.0 |
| 2023-09-28 04:00 | 9.0 | 55.4 | 4.4 | 553.3 | 13.6 | 8.5 |
| 2023-09-28 03:00 | 10.3 | 51.8 | 4.7 | 547.3 | 15.0 | 9.7 |
| 2023-09-28 02:00 | 12.7 | 55.2 | 4.6 | 555.9 | 18.9 | 12.1 |
| 2023-09-28 01:00 | 20.8 | 62.6 | 4.8 | 594.1 | 21.6 | 14.3 |
| 2023-09-28 00:00 | 30.3 | 54.0 | 4.9 | 637.6 | 21.5 | 14.7 |
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.