Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-30 04:00 | 20.3 | 28.6 | 3.3 | 449.5 | 15.3 | 8.5 |
| 2024-04-30 03:00 | 20.7 | 26.4 | 3.5 | 681.6 | 16.4 | 9.0 |
| 2024-04-30 02:00 | - | 23.3 | 3.5 | 435.8 | 17.6 | 9.3 |
| 2024-04-30 01:00 | 33.5 | 18.9 | 4.2 | 755.6 | 22.9 | 13.2 |
| 2024-04-30 00:00 | 31.3 | - | 3.9 | 739.5 | 22.9 | 14.4 |
| 2024-04-29 23:00 | 36.9 | 21.1 | 4.1 | 480.5 | 24.4 | 16.0 |
| 2024-04-29 22:00 | 46.6 | 16.7 | 4.7 | 478.3 | 26.1 | 17.3 |
| 2024-04-29 21:00 | 46.7 | 16.0 | 5.1 | 576.2 | 30.7 | 20.0 |
| 2024-04-29 20:00 | 55.4 | 15.4 | 5.8 | 653.1 | 36.2 | 24.0 |
| 2024-04-29 19:00 | 63.7 | 12.0 | 6.6 | 588.4 | 30.3 | 19.8 |
| 2024-04-29 18:00 | 69.0 | 11.3 | 6.2 | 595.5 | 32.7 | 21.4 |
| 2024-04-29 17:00 | 64.7 | 15.1 | 5.2 | 569.2 | 25.0 | 15.9 |
| 2024-04-29 16:00 | 57.5 | 22.0 | 4.5 | 506.4 | 25.0 | 16.6 |
| 2024-04-29 15:00 | 65.2 | 19.3 | 5.5 | 505.7 | 30.3 | 20.6 |
| 2024-04-29 14:00 | 63.4 | 15.7 | 5.9 | 605.3 | 32.5 | 22.4 |
| 2024-04-29 13:00 | 61.9 | 17.7 | 5.4 | 556.4 | 31.2 | 20.8 |
| 2024-04-29 12:00 | 57.7 | 18.4 | 5.5 | 477.6 | 32.3 | 20.9 |
| 2024-04-29 11:00 | - | 18.1 | - | - | 33.4 | 20.8 |
| 2024-04-29 10:00 | 56.8 | 15.6 | 4.7 | 529.7 | 33.1 | 22.2 |
| 2024-04-29 09:00 | 67.7 | 9.1 | 7.4 | 814.2 | 39.9 | 25.6 |
| 2024-04-29 08:00 | 76.6 | 8.8 | 5.7 | 835.4 | 33.4 | 19.4 |
| 2024-04-29 07:00 | 46.9 | 24.8 | 3.0 | 557.0 | 24.1 | 11.5 |
| 2024-04-29 06:00 | 28.6 | 46.7 | 2.7 | 378.4 | 19.8 | 6.5 |
| 2024-04-29 05:00 | 16.0 | 56.0 | 2.6 | 421.7 | 15.6 | 3.6 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) Concentration shown is in microgram per cubic metre (µg/m3).
(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.