Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-04 08:00 | 102.2 | 10.9 | 7.3 | 705.2 | 35.0 | 18.5 |
| 2021-12-04 07:00 | 79.3 | 23.3 | 5.7 | 661.6 | 25.6 | 13.3 |
| 2021-12-04 06:00 | 54.4 | 48.0 | 5.2 | 619.9 | 20.4 | 12.2 |
| 2021-12-04 05:00 | 63.9 | 39.0 | 5.8 | 639.8 | 21.6 | 13.5 |
| 2021-12-04 04:00 | 65.5 | 37.3 | 6.1 | 634.5 | 21.4 | 13.2 |
| 2021-12-04 03:00 | - | 39.8 | - | - | 34.3 | 21.1 |
| 2021-12-04 02:00 | 76.5 | 26.6 | 7.4 | 762.1 | 34.6 | 18.9 |
| 2021-12-04 01:00 | 82.1 | 22.2 | 8.3 | 775.8 | 39.1 | 17.9 |
| 2021-12-04 00:00 | 99.7 | 9.8 | 9.2 | 837.7 | 42.4 | 17.8 |
| 2021-12-03 23:00 | 107.5 | 9.2 | 8.3 | 812.1 | 46.7 | 18.8 |
| 2021-12-03 22:00 | 104.1 | 10.7 | 7.4 | 806.5 | 43.9 | 18.2 |
| 2021-12-03 21:00 | 110.1 | 12.9 | 8.9 | 796.2 | 38.7 | 18.1 |
| 2021-12-03 20:00 | 128.1 | 5.9 | 11.6 | 866.6 | 41.3 | 18.0 |
| 2021-12-03 19:00 | 139.0 | 4.1 | 15.9 | 896.4 | 41.0 | 17.7 |
| 2021-12-03 18:00 | 135.9 | 6.9 | 14.3 | 828.5 | 39.5 | 15.4 |
| 2021-12-03 17:00 | 123.5 | 15.0 | 9.8 | 748.8 | 39.3 | 16.3 |
| 2021-12-03 16:00 | 126.5 | 12.8 | 10.0 | 736.2 | 40.0 | 16.5 |
| 2021-12-03 15:00 | 128.0 | 18.2 | 8.1 | 726.6 | 36.6 | 15.5 |
| 2021-12-03 14:00 | 108.5 | 22.5 | 7.1 | 699.4 | 35.7 | 16.7 |
| 2021-12-03 13:00 | 110.6 | 17.6 | 8.1 | 724.7 | 34.2 | 15.3 |
| 2021-12-03 12:00 | 113.0 | 15.9 | 8.1 | 730.7 | 36.2 | 17.4 |
| 2021-12-03 11:00 | 99.3 | 17.1 | 7.3 | 746.8 | 34.3 | 16.2 |
| 2021-12-03 10:00 | 104.1 | 13.0 | 10.1 | 729.6 | 38.8 | 20.8 |
| 2021-12-03 09:00 | 119.3 | 5.3 | 11.3 | 854.1 | 34.9 | 16.3 |
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.
