Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-09-22 19:00 | 45.2 | 23.9 | 3.3 | 934.3 | 7.0 | 4.5 |
| 2021-09-22 18:00 | 37.5 | 30.4 | 3.3 | 847.1 | 8.4 | 5.9 |
| 2021-09-22 17:00 | 37.2 | 30.4 | 3.7 | 788.2 | 6.7 | 4.3 |
| 2021-09-22 16:00 | 40.1 | 27.3 | 3.6 | 823.1 | 10.5 | 7.0 |
| 2021-09-22 15:00 | 38.3 | 36.9 | 3.4 | 822.1 | 9.3 | 5.7 |
| 2021-09-22 14:00 | 34.4 | 39.1 | 3.2 | 813.5 | 8.5 | 5.8 |
| 2021-09-22 13:00 | 27.2 | 38.6 | 3.3 | 819.0 | 11.0 | 7.6 |
| 2021-09-22 12:00 | 37.1 | 22.7 | 3.6 | 804.4 | 10.2 | 4.7 |
| 2021-09-22 11:00 | 45.3 | 13.3 | 4.3 | 856.7 | 9.8 | 5.5 |
| 2021-09-22 10:00 | 33.5 | 11.8 | 3.8 | 815.1 | 9.2 | 6.0 |
| 2021-09-22 09:00 | 35.1 | 8.3 | 4.9 | 915.6 | 11.4 | 6.6 |
| 2021-09-22 08:00 | 41.2 | 4.2 | 5.6 | 1,174.4 | 11.6 | 6.8 |
| 2021-09-22 07:00 | 32.2 | - | 4.4 | 922.4 | 8.0 | 5.5 |
| 2021-09-22 06:00 | 31.8 | 6.3 | 3.8 | 874.1 | 7.1 | 6.3 |
| 2021-09-22 05:00 | 33.6 | 6.4 | 3.8 | 907.8 | 5.5 | 4.7 |
| 2021-09-22 04:00 | 35.9 | 5.5 | 3.9 | 925.9 | 4.6 | 3.7 |
| 2021-09-22 03:00 | 33.2 | 4.8 | 3.9 | 895.5 | 4.0 | 3.4 |
| 2021-09-22 02:00 | 34.2 | 6.3 | 3.9 | 904.2 | 8.8 | 7.3 |
| 2021-09-22 01:00 | 42.5 | 3.9 | 4.5 | 991.5 | 9.9 | 7.7 |
| 2021-09-22 00:00 | 55.1 | 2.2 | 5.7 | 1,003.6 | 15.5 | 11.2 |
| 2021-09-21 23:00 | 69.9 | 2.9 | 7.9 | 1,320.1 | 20.9 | 14.7 |
| 2021-09-21 22:00 | 77.8 | 3.4 | 9.7 | 1,395.9 | 30.0 | 22.2 |
| 2021-09-21 21:00 | 85.3 | 4.7 | 11.2 | 1,885.1 | 44.2 | 33.0 |
| 2021-09-21 20:00 | 91.8 | 4.8 | 11.7 | 1,687.6 | 30.0 | 18.7 |
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.
