Past 24 Hours Pollutant Concentration Summary
Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-20 13:00 | 53.4 | 24.1 | 2.8 | 444.3 | 28.5 | 16.4 |
| 2024-04-20 12:00 | 60.3 | 21.4 | 3.2 | 446.5 | 32.7 | 17.7 |
| 2024-04-20 11:00 | 62.1 | 13.6 | 3.5 | 464.1 | 25.9 | 14.2 |
| 2024-04-20 10:00 | 66.9 | 10.2 | 3.2 | 431.4 | 31.8 | 19.8 |
| 2024-04-20 09:00 | 64.2 | 8.1 | 3.6 | 399.3 | 28.4 | 19.0 |
| 2024-04-20 08:00 | 56.4 | 12.2 | 2.6 | 348.4 | 27.1 | 17.6 |
| 2024-04-20 07:00 | 39.8 | 22.5 | 2.0 | 242.8 | 22.4 | 15.1 |
| 2024-04-20 06:00 | 25.6 | 38.0 | 1.6 | 218.2 | 19.2 | 13.0 |
| 2024-04-20 05:00 | 27.4 | 37.6 | 2.0 | 234.6 | 20.8 | 13.9 |
| 2024-04-20 04:00 | 33.3 | 29.3 | 2.0 | 316.7 | 20.0 | 13.1 |
| 2024-04-20 03:00 | - | 36.4 | - | - | 18.6 | 11.7 |
| 2024-04-20 02:00 | 25.7 | 35.1 | 1.7 | 266.2 | 17.4 | 10.5 |
| 2024-04-20 01:00 | 32.6 | 30.4 | 1.9 | 291.5 | 21.8 | 13.4 |
| 2024-04-20 00:00 | 47.9 | 16.3 | 2.4 | 373.2 | 23.0 | 15.2 |
| 2024-04-19 23:00 | 53.4 | 13.2 | 2.5 | 431.0 | 24.1 | 15.4 |
| 2024-04-19 22:00 | 49.3 | 11.3 | 2.5 | 502.2 | 23.6 | 14.6 |
| 2024-04-19 21:00 | 50.3 | 15.4 | 2.6 | 462.0 | 29.2 | 19.2 |
| 2024-04-19 20:00 | 53.9 | 15.5 | 3.2 | 458.1 | 26.8 | 18.0 |
| 2024-04-19 19:00 | 71.1 | 8.8 | 5.0 | 500.2 | 27.7 | 18.1 |
| 2024-04-19 18:00 | 68.2 | 12.0 | 4.0 | 490.0 | 29.1 | 17.5 |
| 2024-04-19 17:00 | 65.2 | 14.0 | 3.9 | 405.2 | 26.2 | 14.8 |
| 2024-04-19 16:00 | 68.2 | 9.1 | 3.9 | 453.1 | 30.2 | 17.5 |
| 2024-04-19 15:00 | 69.7 | 9.4 | 3.6 | 479.6 | 28.9 | 17.7 |
| 2024-04-19 14:00 | 62.0 | 12.5 | 3.5 | 455.9 | 34.1 | 21.5 |
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.