Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-05 22:00 | 55.8 | 90.0 | 5.8 | - | 44.7 | 22.8 |
| 2021-12-05 21:00 | 47.0 | 102.8 | 6.4 | - | 44.8 | 23.3 |
| 2021-12-05 20:00 | 50.3 | 105.5 | 6.2 | - | 43.6 | 23.8 |
| 2021-12-05 19:00 | 65.8 | 106.3 | 5.7 | - | 41.1 | 24.4 |
| 2021-12-05 18:00 | 52.3 | 133.0 | 5.6 | - | 46.3 | 25.7 |
| 2021-12-05 17:00 | 49.8 | 149.9 | 6.7 | - | 52.7 | 28.5 |
| 2021-12-05 16:00 | 49.2 | 148.7 | 6.6 | - | 44.3 | 23.6 |
| 2021-12-05 15:00 | 44.4 | 136.3 | 6.1 | - | 37.6 | 21.8 |
| 2021-12-05 14:00 | 32.2 | 144.9 | 5.7 | - | 32.8 | 18.1 |
| 2021-12-05 13:00 | 32.1 | 135.2 | 5.9 | - | 32.7 | 17.7 |
| 2021-12-05 12:00 | 40.6 | 117.3 | 6.4 | - | 42.4 | 23.9 |
| 2021-12-05 11:00 | 40.9 | 111.0 | 6.5 | - | 47.0 | 25.0 |
| 2021-12-05 10:00 | 37.3 | 111.3 | 7.0 | - | 54.1 | 29.4 |
| 2021-12-05 09:00 | 41.9 | 91.0 | 7.1 | - | 52.2 | 27.5 |
| 2021-12-05 08:00 | 33.9 | 98.9 | 6.1 | - | 46.9 | 23.1 |
| 2021-12-05 07:00 | 27.5 | 109.7 | 5.9 | - | 48.8 | 23.4 |
| 2021-12-05 06:00 | 16.9 | 125.2 | 5.5 | - | 51.2 | 24.5 |
| 2021-12-05 05:00 | 15.5 | 125.7 | 4.9 | - | 51.4 | 23.8 |
| 2021-12-05 04:00 | 15.7 | 128.5 | 4.8 | - | 48.9 | 22.4 |
| 2021-12-05 03:00 | 15.6 | 135.8 | 5.0 | - | 50.7 | 22.4 |
| 2021-12-05 02:00 | 19.7 | 130.5 | 4.8 | - | 48.5 | 21.2 |
| 2021-12-05 01:00 | 23.9 | 127.9 | 4.3 | - | 40.9 | 18.0 |
| 2021-12-05 00:00 | 33.7 | 116.8 | 4.3 | - | 38.2 | 17.7 |
| 2021-12-04 23:00 | 42.2 | 108.3 | 4.7 | - | 36.0 | 18.4 |
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.
