Past 24 Hours Pollutant Concentration Summary
North
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-02 07:00 | 55.7 | 38.2 | 4.6 | 511.3 | 33.9 | 18.7 |
| 2021-12-02 06:00 | 28.8 | 59.1 | 4.3 | 409.3 | 30.9 | 16.9 |
| 2021-12-02 05:00 | 29.6 | 48.4 | 3.9 | 439.6 | 29.2 | 10.3 |
| 2021-12-02 04:00 | 20.9 | 59.6 | 4.1 | 504.8 | 26.7 | 5.8 |
| 2021-12-02 03:00 | 31.2 | 57.5 | 5.3 | 548.8 | 31.6 | 9.5 |
| 2021-12-02 02:00 | 39.1 | 57.8 | 5.9 | 453.4 | 36.7 | 12.9 |
| 2021-12-02 01:00 | 44.7 | 52.7 | 5.7 | 479.4 | 38.7 | 14.1 |
| 2021-12-02 00:00 | 41.3 | 58.9 | 6.0 | 500.4 | 39.9 | 12.9 |
| 2021-12-01 23:00 | 34.5 | 68.1 | 5.9 | 470.3 | 43.7 | 15.0 |
| 2021-12-01 22:00 | 66.3 | 45.2 | 5.2 | 563.0 | 48.7 | 18.3 |
| 2021-12-01 21:00 | 99.0 | 14.1 | 5.4 | 772.0 | 48.6 | 14.2 |
| 2021-12-01 20:00 | 99.5 | 11.5 | 5.3 | 782.4 | 46.4 | 13.5 |
| 2021-12-01 19:00 | 110.7 | 21.6 | 4.9 | 835.9 | 45.0 | 14.5 |
| 2021-12-01 18:00 | 68.9 | 57.5 | 4.2 | 528.9 | 47.1 | 10.4 |
| 2021-12-01 17:00 | 55.4 | 76.4 | 4.0 | 548.4 | 44.8 | 6.7 |
| 2021-12-01 16:00 | 45.0 | 85.4 | 3.7 | 457.0 | 43.0 | 9.9 |
| 2021-12-01 15:00 | 31.5 | 92.5 | 3.4 | 429.0 | 43.9 | 12.8 |
| 2021-12-01 14:00 | 41.7 | 79.8 | 3.1 | 462.4 | 45.3 | 13.5 |
| 2021-12-01 13:00 | 34.7 | 81.9 | 3.1 | 503.9 | 46.4 | 12.1 |
| 2021-12-01 12:00 | 36.8 | 75.7 | 3.6 | 474.4 | 44.3 | 10.6 |
| 2021-12-01 11:00 | 39.1 | 65.2 | 3.9 | 442.6 | 40.3 | 12.0 |
| 2021-12-01 10:00 | 29.9 | 69.0 | 4.0 | 430.6 | 35.9 | 13.0 |
| 2021-12-01 09:00 | 35.8 | 62.3 | 4.3 | 468.0 | 34.2 | 11.5 |
| 2021-12-01 08:00 | 39.6 | 57.5 | 3.8 | 495.7 | 34.6 | 10.0 |
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.