Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-01-20 19:00 | 122.8 | 23.3 | 6.4 | 1,061.6 | 35.6 | 22.0 |
| 2022-01-20 18:00 | 99.6 | 39.1 | 4.7 | 996.9 | 36.9 | 23.8 |
| 2022-01-20 17:00 | 95.8 | 39.0 | 5.0 | 903.4 | 37.3 | 24.0 |
| 2022-01-20 16:00 | 88.7 | 42.5 | 3.8 | 932.8 | 34.2 | 22.0 |
| 2022-01-20 15:00 | 87.9 | 41.9 | 3.8 | 988.6 | 30.2 | 20.4 |
| 2022-01-20 14:00 | 65.9 | 55.0 | 3.4 | 916.4 | 31.0 | 20.9 |
| 2022-01-20 13:00 | 66.3 | 47.9 | 4.3 | 983.4 | 29.5 | 20.6 |
| 2022-01-20 12:00 | - | - | - | - | 28.6 | 18.7 |
| 2022-01-20 11:00 | - | - | - | - | 30.8 | 19.2 |
| 2022-01-20 10:00 | 87.9 | 18.0 | 5.4 | 1,001.5 | 40.4 | 25.4 |
| 2022-01-20 09:00 | 87.5 | 13.0 | 6.0 | 986.4 | 31.8 | 19.5 |
| 2022-01-20 08:00 | 65.4 | 26.0 | 3.6 | 925.5 | 29.2 | 18.2 |
| 2022-01-20 07:00 | 47.6 | 47.4 | 3.1 | 859.3 | 24.8 | 14.5 |
| 2022-01-20 06:00 | 39.0 | 56.8 | 2.6 | 841.8 | 26.1 | 18.0 |
| 2022-01-20 05:00 | 46.7 | 49.5 | 2.6 | 847.8 | 22.9 | 15.6 |
| 2022-01-20 04:00 | 64.8 | 17.8 | 3.3 | 949.6 | 21.9 | 13.2 |
| 2022-01-20 03:00 | 62.8 | 12.3 | 3.0 | 962.2 | 18.5 | 14.3 |
| 2022-01-20 02:00 | 70.1 | 10.9 | 3.6 | 975.7 | 20.0 | 13.9 |
| 2022-01-20 01:00 | 72.1 | 10.2 | 3.8 | 998.3 | 18.7 | 10.5 |
| 2022-01-20 00:00 | 73.4 | 15.2 | 3.9 | 959.8 | 27.9 | 16.5 |
| 2022-01-19 23:00 | 83.0 | 18.7 | 3.9 | 969.2 | 34.8 | 19.2 |
| 2022-01-19 22:00 | 89.3 | 22.9 | 3.8 | 986.9 | 33.4 | 20.4 |
| 2022-01-19 21:00 | 122.6 | 13.8 | 5.4 | 1,373.1 | 38.6 | 26.0 |
| 2022-01-19 20:00 | 135.7 | 15.3 | 5.9 | 1,347.5 | 36.2 | 25.6 |
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.
