Past 24 Hours Pollutant Concentration Summary
Southern
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-02 08:00 | 40.7 | 57.7 | 2.6 | 326.9 | 32.5 | 11.2 |
| 2021-12-02 07:00 | 31.7 | 63.1 | 2.5 | 294.7 | 30.3 | 10.8 |
| 2021-12-02 06:00 | 20.7 | 74.1 | 2.1 | 284.1 | 30.8 | 9.8 |
| 2021-12-02 05:00 | 14.6 | 82.3 | 1.9 | 256.2 | 25.7 | 6.7 |
| 2021-12-02 04:00 | 13.9 | 78.1 | 1.5 | 258.3 | 23.9 | 9.7 |
| 2021-12-02 03:00 | 14.6 | 76.0 | 1.2 | 256.1 | 28.0 | 15.4 |
| 2021-12-02 02:00 | 18.1 | 77.1 | 1.4 | 259.2 | 32.1 | 15.4 |
| 2021-12-02 01:00 | 22.5 | 74.1 | 1.5 | 270.5 | 35.2 | 12.4 |
| 2021-12-02 00:00 | 28.2 | 68.3 | 1.4 | 292.8 | 36.2 | 11.4 |
| 2021-12-01 23:00 | 29.6 | 74.1 | 1.7 | 309.3 | 38.8 | 12.0 |
| 2021-12-01 22:00 | 30.9 | 81.5 | 2.2 | 295.4 | 42.1 | 9.1 |
| 2021-12-01 21:00 | 37.4 | 78.0 | 2.7 | 306.6 | 41.3 | 7.4 |
| 2021-12-01 20:00 | 59.8 | 52.7 | 2.4 | 378.9 | 42.3 | 11.2 |
| 2021-12-01 19:00 | 55.7 | 65.5 | 2.0 | 341.5 | 45.9 | 13.6 |
| 2021-12-01 18:00 | 58.2 | 70.0 | 1.7 | 337.6 | 72.1 | 43.5 |
| 2021-12-01 17:00 | 55.6 | 79.5 | 1.6 | 328.0 | 65.0 | 41.7 |
| 2021-12-01 16:00 | 48.4 | 94.6 | 1.7 | 326.7 | 37.3 | 16.6 |
| 2021-12-01 15:00 | 44.7 | 90.5 | 1.1 | 321.8 | 37.4 | 11.4 |
| 2021-12-01 14:00 | 36.5 | 90.5 | 1.1 | 304.2 | 38.3 | 7.0 |
| 2021-12-01 13:00 | 32.9 | 83.7 | 1.2 | 317.2 | 34.9 | 11.2 |
| 2021-12-01 12:00 | 36.5 | 75.2 | 1.4 | 306.9 | 32.1 | 14.7 |
| 2021-12-01 11:00 | 35.5 | 68.7 | 1.2 | 298.0 | 29.1 | 6.7 |
| 2021-12-01 10:00 | 43.9 | 56.2 | 1.6 | 316.0 | 31.7 | 9.1 |
| 2021-12-01 09:00 | 38.2 | 58.8 | 1.3 | 301.4 | 33.2 | 12.2 |
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.