Past 24 Hours Pollutant Concentration Summary
Tsuen Wan
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-02-07 07:00 | 36.1 | 11.9 | 10.0 | 482.8 | 11.5 | 7.1 |
| 2023-02-07 06:00 | 58.0 | 4.2 | 12.3 | 534.5 | 14.5 | 12.6 |
| 2023-02-07 05:00 | 31.8 | 23.5 | 9.2 | 468.5 | 12.9 | 7.5 |
| 2023-02-07 04:00 | 55.3 | 12.1 | 9.6 | 496.9 | 9.4 | 7.0 |
| 2023-02-07 03:00 | 31.7 | 32.4 | 8.9 | 448.0 | 7.0 | - |
| 2023-02-07 02:00 | 19.4 | 44.8 | 9.2 | 441.0 | 11.1 | 9.6 |
| 2023-02-07 01:00 | - | - | - | - | 5.7 | 2.3 |
| 2023-02-07 00:00 | 44.7 | 24.5 | 7.7 | 523.6 | 11.9 | 10.4 |
| 2023-02-06 23:00 | 31.0 | 37.2 | 7.7 | 489.5 | 9.3 | 6.0 |
| 2023-02-06 22:00 | 35.6 | 32.9 | 7.8 | 548.2 | 7.8 | 3.8 |
| 2023-02-06 21:00 | 36.3 | 33.6 | 7.9 | 534.9 | 10.6 | 10.0 |
| 2023-02-06 20:00 | 37.4 | 35.5 | 7.8 | 494.0 | 16.8 | 11.5 |
| 2023-02-06 19:00 | 63.3 | 16.1 | 8.2 | 595.0 | 12.7 | 5.7 |
| 2023-02-06 18:00 | 56.5 | 22.4 | 8.5 | 556.5 | 12.4 | 10.0 |
| 2023-02-06 17:00 | 62.0 | 22.3 | 9.0 | 563.7 | 13.4 | 6.3 |
| 2023-02-06 16:00 | 61.5 | 24.1 | 9.6 | 529.1 | 18.7 | 15.1 |
| 2023-02-06 15:00 | 35.1 | 40.9 | 8.4 | 522.2 | 15.9 | 12.5 |
| 2023-02-06 14:00 | 37.3 | 29.3 | 8.9 | 579.1 | 33.1 | 20.2 |
| 2023-02-06 13:00 | 60.0 | 10.6 | 11.1 | 645.1 | 24.8 | 17.4 |
| 2023-02-06 12:00 | 39.8 | 24.0 | 8.7 | 594.6 | 7.9 | 5.0 |
| 2023-02-06 11:00 | 48.2 | 15.2 | 10.8 | 632.4 | 31.3 | 22.1 |
| 2023-02-06 10:00 | 65.3 | 2.6 | 16.3 | 734.8 | 34.5 | 23.1 |
| 2023-02-06 09:00 | 63.5 | 1.8 | 15.5 | 741.5 | 28.2 | 19.7 |
| 2023-02-06 08:00 | 60.8 | 1.5 | 11.9 | 678.6 | 22.6 | 20.0 |
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.