Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-01-19 09:00 | 50.1 | 19.8 | 2.7 | - | 22.0 | 16.1 |
| 2022-01-19 08:00 | 47.7 | 14.1 | 2.5 | - | 20.0 | 15.4 |
| 2022-01-19 07:00 | 35.4 | 26.1 | 2.3 | - | 16.7 | 13.9 |
| 2022-01-19 06:00 | 28.7 | 33.4 | 3.1 | - | 20.1 | 15.6 |
| 2022-01-19 05:00 | 43.6 | 20.8 | 3.3 | - | 23.5 | 16.4 |
| 2022-01-19 04:00 | 45.7 | 20.9 | 3.6 | - | 28.6 | 19.9 |
| 2022-01-19 03:00 | 48.4 | 20.7 | 4.1 | - | 30.7 | 19.8 |
| 2022-01-19 02:00 | - | 17.7 | - | - | 34.5 | 21.3 |
| 2022-01-19 01:00 | 59.6 | 15.4 | 3.3 | - | 36.5 | 22.9 |
| 2022-01-19 00:00 | 65.1 | 14.8 | 3.3 | - | 38.2 | 24.4 |
| 2022-01-18 23:00 | 66.3 | 14.8 | 3.3 | - | 40.3 | 25.1 |
| 2022-01-18 22:00 | 68.1 | 14.9 | 3.2 | - | 45.1 | 29.5 |
| 2022-01-18 21:00 | 73.4 | 14.8 | 3.3 | - | 45.9 | 30.7 |
| 2022-01-18 20:00 | 82.1 | 12.3 | 3.8 | - | 42.6 | 30.7 |
| 2022-01-18 19:00 | 82.0 | 11.1 | 3.3 | - | 40.6 | 30.1 |
| 2022-01-18 18:00 | 79.7 | 13.2 | 3.2 | - | 41.3 | 30.1 |
| 2022-01-18 17:00 | 72.2 | 16.7 | 3.2 | - | 37.9 | 27.3 |
| 2022-01-18 16:00 | 58.2 | 30.9 | 3.4 | - | 31.0 | 23.0 |
| 2022-01-18 15:00 | 56.8 | 30.8 | 5.1 | - | 32.4 | 25.4 |
| 2022-01-18 14:00 | 60.8 | 18.6 | 4.8 | - | 28.2 | 23.3 |
| 2022-01-18 13:00 | 49.3 | 40.1 | 2.7 | - | 25.0 | 20.5 |
| 2022-01-18 12:00 | 41.1 | 42.0 | 1.7 | - | 23.8 | 20.2 |
| 2022-01-18 11:00 | 48.2 | 31.7 | 1.8 | - | 24.5 | 20.1 |
| 2022-01-18 10:00 | 60.0 | 12.4 | 3.2 | - | 23.3 | 19.0 |
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.
