Past 24 Hours Pollutant Concentration Summary
Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-19 22:00 | 37.2 | 28.8 | 3.8 | 506.3 | 22.5 | 15.5 |
| 2024-04-19 21:00 | 33.1 | 37.4 | 3.3 | 495.8 | 38.2 | 26.0 |
| 2024-04-19 20:00 | 49.6 | 25.6 | 4.3 | 570.1 | 28.5 | 16.9 |
| 2024-04-19 19:00 | 71.2 | 14.0 | 5.4 | 588.3 | 38.7 | 26.0 |
| 2024-04-19 18:00 | 54.4 | 26.8 | 4.2 | 449.4 | 41.9 | 28.3 |
| 2024-04-19 17:00 | 40.1 | 38.4 | 3.3 | 400.1 | 31.2 | 19.1 |
| 2024-04-19 16:00 | 40.1 | 36.0 | 3.5 | 395.2 | 38.4 | 22.7 |
| 2024-04-19 15:00 | 64.8 | 23.4 | 5.0 | 490.6 | 37.0 | 21.3 |
| 2024-04-19 14:00 | 52.4 | 26.5 | 4.4 | 459.8 | 31.4 | 20.9 |
| 2024-04-19 13:00 | 32.2 | 42.2 | 3.3 | 388.2 | 36.0 | 22.8 |
| 2024-04-19 12:00 | 41.7 | 34.9 | 3.7 | 404.1 | 39.3 | 21.3 |
| 2024-04-19 11:00 | 44.1 | 27.2 | 3.6 | 435.9 | 37.0 | 22.9 |
| 2024-04-19 10:00 | 54.1 | 20.1 | 4.3 | 471.0 | 41.3 | 26.9 |
| 2024-04-19 09:00 | 57.3 | 19.8 | 4.7 | 464.1 | 25.4 | 16.9 |
| 2024-04-19 08:00 | 40.4 | 26.3 | 3.8 | 444.9 | 28.7 | 20.9 |
| 2024-04-19 07:00 | 34.8 | 25.6 | 3.2 | 389.9 | 26.1 | 18.5 |
| 2024-04-19 06:00 | 22.9 | 35.7 | 3.0 | 375.6 | 23.8 | 17.8 |
| 2024-04-19 05:00 | 25.1 | 34.3 | 2.8 | 423.5 | 10.6 | 7.2 |
| 2024-04-19 04:00 | 19.7 | 39.0 | 2.7 | 526.9 | 7.6 | 5.9 |
| 2024-04-19 03:00 | 14.3 | 42.6 | 2.8 | 348.3 | 21.1 | 16.4 |
| 2024-04-19 02:00 | 20.2 | 37.2 | 3.1 | 354.2 | 27.5 | 20.1 |
| 2024-04-19 01:00 | 26.1 | 33.1 | 3.3 | 430.0 | 32.2 | 23.1 |
| 2024-04-19 00:00 | 51.3 | 24.9 | 3.3 | 900.4 | 29.3 | 20.1 |
| 2024-04-18 23:00 | 37.3 | 45.6 | 3.0 | 447.4 | 34.5 | 23.1 |
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.