Past 24 Hours Pollutant Concentration Summary
North
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-16 07:00 | 29.1 | 127.4 | 2.6 | 322.8 | 18.1 | 15.2 |
| 2024-05-16 06:00 | 31.2 | 118.1 | 3.0 | 394.0 | 21.8 | 15.1 |
| 2024-05-16 05:00 | 22.5 | 123.3 | 2.7 | 367.8 | 19.7 | 15.7 |
| 2024-05-16 04:00 | 13.6 | 144.9 | 2.3 | 313.8 | 12.2 | - |
| 2024-05-16 03:00 | 12.2 | 144.6 | 2.4 | 302.8 | 10.3 | - |
| 2024-05-16 02:00 | 15.4 | 141.5 | 2.4 | 383.6 | 12.3 | - |
| 2024-05-16 01:00 | 21.6 | 139.3 | 2.1 | 398.3 | 15.3 | - |
| 2024-05-16 00:00 | 23.7 | 144.3 | 1.9 | 376.8 | 17.7 | 17.4 |
| 2024-05-15 23:00 | 18.6 | 158.9 | 2.1 | 382.4 | 19.8 | 15.4 |
| 2024-05-15 22:00 | 24.1 | 154.7 | 1.7 | 455.7 | 17.5 | 16.5 |
| 2024-05-15 21:00 | 17.6 | 162.7 | 1.6 | 304.0 | 16.9 | 16.6 |
| 2024-05-15 20:00 | 19.9 | 162.4 | 1.6 | 374.0 | 18.4 | 15.7 |
| 2024-05-15 19:00 | 30.6 | 156.3 | 1.9 | 610.2 | 15.8 | - |
| 2024-05-15 18:00 | 21.4 | 164.4 | 2.0 | 547.2 | 19.1 | - |
| 2024-05-15 17:00 | 16.8 | 171.6 | 2.2 | 362.2 | 23.5 | 21.5 |
| 2024-05-15 16:00 | 13.8 | 176.1 | 2.1 | 318.4 | 16.6 | - |
| 2024-05-15 15:00 | 14.2 | 168.2 | 2.2 | 325.4 | 16.5 | 16.4 |
| 2024-05-15 14:00 | 16.4 | 161.8 | 2.3 | 333.8 | 24.1 | 16.7 |
| 2024-05-15 13:00 | 14.2 | 161.4 | 2.7 | 333.5 | 26.9 | 17.4 |
| 2024-05-15 12:00 | 14.0 | 155.4 | 2.9 | 269.6 | 26.4 | 14.4 |
| 2024-05-15 11:00 | 16.7 | 137.9 | 2.9 | 289.7 | 21.5 | 11.9 |
| 2024-05-15 10:00 | 18.5 | 122.9 | 2.7 | 263.1 | 20.5 | 10.5 |
| 2024-05-15 09:00 | 23.0 | 99.5 | 2.5 | 309.5 | 24.3 | 11.6 |
| 2024-05-15 08:00 | 32.0 | 85.9 | 2.3 | 415.6 | 21.6 | 13.6 |
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.