Mong Kok
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-09-22 18:00 | 67.1 | 15.9 | 3.9 | 772.5 | 12.1 | 7.9 |
| 2021-09-22 17:00 | 62.5 | 17.8 | 4.1 | 677.9 | 11.7 | 7.7 |
| 2021-09-22 16:00 | 57.1 | 18.0 | 4.0 | 646.4 | 13.3 | 9.2 |
| 2021-09-22 15:00 | 56.7 | 22.1 | 4.0 | 666.0 | 11.7 | 8.2 |
| 2021-09-22 14:00 | 56.5 | 23.5 | 3.8 | 651.4 | 9.2 | 6.7 |
| 2021-09-22 13:00 | 59.6 | 18.5 | 4.5 | 677.4 | 11.3 | 7.9 |
| 2021-09-22 12:00 | 53.9 | 18.3 | 4.6 | 617.8 | 11.9 | 7.7 |
| 2021-09-22 11:00 | 53.1 | 10.6 | 5.5 | 683.1 | 8.9 | 5.7 |
| 2021-09-22 10:00 | 42.3 | 12.3 | 3.0 | 646.2 | 5.7 | 3.1 |
| 2021-09-22 09:00 | 25.7 | 13.0 | 2.4 | 547.8 | 7.4 | 4.9 |
| 2021-09-22 08:00 | 25.4 | 12.0 | 2.5 | 553.5 | 7.5 | 4.7 |
| 2021-09-22 07:00 | 27.4 | 10.6 | 2.3 | 575.8 | 4.4 | 2.5 |
| 2021-09-22 06:00 | 27.7 | 12.7 | 2.1 | 594.2 | 3.6 | 1.6 |
| 2021-09-22 05:00 | 29.2 | 14.4 | 2.3 | 636.0 | 3.9 | 1.6 |
| 2021-09-22 04:00 | 29.0 | 13.6 | 2.5 | 667.2 | 3.6 | 1.6 |
| 2021-09-22 03:00 | - | 16.1 | - | - | 4.5 | 2.5 |
| 2021-09-22 02:00 | 22.9 | 17.9 | 2.3 | 584.8 | 6.6 | 4.0 |
| 2021-09-22 01:00 | 38.3 | 11.7 | 3.3 | 595.7 | 11.0 | 7.3 |
| 2021-09-22 00:00 | 60.4 | 5.7 | 4.6 | 729.3 | 15.8 | 11.4 |
| 2021-09-21 23:00 | 84.1 | 1.8 | 13.8 | 805.0 | 19.7 | 14.3 |
| 2021-09-21 22:00 | 89.9 | 2.2 | 14.8 | 893.0 | 21.8 | 16.1 |
| 2021-09-21 21:00 | 93.9 | 2.4 | 15.2 | 970.9 | 22.9 | 17.1 |
| 2021-09-21 20:00 | 92.5 | 2.5 | 11.8 | 978.2 | 21.2 | 14.5 |
| 2021-09-21 19:00 | 101.4 | 2.6 | 10.7 | 932.6 | 21.7 | 14.1 |
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.
