Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-01-24 00:00 | 148.7 | 2.0 | 9.5 | 1,359.9 | 80.0 | 61.0 |
| 2021-01-23 23:00 | 160.0 | 1.9 | 11.4 | 1,333.0 | 77.3 | 55.3 |
| 2021-01-23 22:00 | 168.1 | 1.5 | 15.4 | 1,306.7 | 79.8 | 50.3 |
| 2021-01-23 21:00 | 172.6 | 1.5 | 14.1 | 1,208.3 | 89.5 | 48.3 |
| 2021-01-23 20:00 | 171.2 | 2.0 | 11.4 | 1,139.7 | 70.1 | 43.6 |
| 2021-01-23 19:00 | 168.5 | 1.9 | 12.3 | 1,173.1 | 61.3 | 41.9 |
| 2021-01-23 18:00 | 174.5 | 5.8 | 9.9 | 989.4 | 58.7 | 41.4 |
| 2021-01-23 17:00 | 162.5 | 8.6 | 8.5 | 932.5 | 74.8 | 52.1 |
| 2021-01-23 16:00 | 172.9 | 7.7 | 8.3 | 1,090.8 | 69.7 | 50.0 |
| 2021-01-23 15:00 | 129.4 | 27.9 | 6.2 | 880.9 | 55.3 | 41.1 |
| 2021-01-23 14:00 | 138.3 | 9.8 | 8.6 | 954.7 | 41.2 | 28.2 |
| 2021-01-23 13:00 | 107.2 | 19.3 | 6.1 | 874.1 | 34.7 | 24.4 |
| 2021-01-23 12:00 | 102.8 | 13.5 | 6.5 | 895.1 | 40.6 | 30.0 |
| 2021-01-23 11:00 | 92.5 | 9.1 | 6.8 | 887.5 | 54.6 | 41.5 |
| 2021-01-23 10:00 | 89.5 | 3.5 | 8.5 | 911.8 | 76.1 | 56.7 |
| 2021-01-23 09:00 | 98.8 | 1.0 | 11.2 | 1,162.9 | 75.5 | 56.3 |
| 2021-01-23 08:00 | 95.9 | 0.3 | 12.2 | 1,319.3 | 73.8 | 54.0 |
| 2021-01-23 07:00 | 94.5 | 0.0 | 11.8 | 1,337.8 | 83.7 | 58.7 |
| 2021-01-23 06:00 | 105.3 | 0.3 | 12.6 | 1,379.6 | 88.5 | 62.4 |
| 2021-01-23 05:00 | 108.4 | 0.7 | 11.3 | 1,214.2 | 84.3 | 60.5 |
| 2021-01-23 04:00 | 109.3 | 0.5 | 9.9 | 1,217.6 | 84.5 | 60.2 |
| 2021-01-23 03:00 | 106.3 | 0.8 | 8.6 | 1,147.7 | 86.8 | 62.0 |
| 2021-01-23 02:00 | 111.2 | 0.8 | 8.5 | 1,177.2 | 88.2 | 63.8 |
| 2021-01-23 01:00 | 108.5 | 1.1 | 8.1 | 1,126.7 | 72.9 | 53.9 |
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.
