Past 24 Hours Pollutant Concentration Summary
North
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-29 17:00 | 22.3 | 30.8 | 1.6 | 224.7 | 11.3 | 8.9 |
| 2024-04-29 16:00 | 16.7 | 38.1 | 1.4 | 212.4 | 16.2 | 9.6 |
| 2024-04-29 15:00 | 14.7 | 39.3 | 1.3 | 233.4 | 18.6 | 13.0 |
| 2024-04-29 14:00 | 19.0 | 38.0 | 1.3 | 231.8 | 17.6 | 16.3 |
| 2024-04-29 13:00 | 22.7 | 38.0 | 1.3 | 293.6 | 18.1 | 13.6 |
| 2024-04-29 12:00 | 29.5 | 31.1 | 1.3 | 320.2 | 16.8 | 9.8 |
| 2024-04-29 11:00 | 30.5 | 29.4 | 1.5 | 378.2 | 14.2 | 9.1 |
| 2024-04-29 10:00 | 22.0 | 38.8 | 1.5 | 268.7 | 12.8 | 9.4 |
| 2024-04-29 09:00 | 21.0 | 44.7 | 1.3 | 303.6 | 11.0 | 7.8 |
| 2024-04-29 08:00 | 19.1 | - | 1.1 | 255.2 | 12.1 | 6.3 |
| 2024-04-29 07:00 | 9.5 | 60.4 | 1.1 | 234.6 | 18.8 | 8.6 |
| 2024-04-29 06:00 | 5.9 | 63.7 | 1.3 | 213.8 | 18.8 | 11.1 |
| 2024-04-29 05:00 | 5.4 | 64.6 | 1.2 | 234.8 | 12.0 | 9.7 |
| 2024-04-29 04:00 | 5.9 | 66.6 | 1.3 | 231.2 | 12.1 | 9.3 |
| 2024-04-29 03:00 | 8.2 | 66.8 | 1.1 | 270.1 | 13.6 | 8.2 |
| 2024-04-29 02:00 | 7.2 | 71.6 | 1.5 | 215.8 | 12.3 | 8.4 |
| 2024-04-29 01:00 | 8.4 | 75.0 | 1.1 | 219.5 | 10.2 | 9.5 |
| 2024-04-29 00:00 | 10.3 | 79.8 | 1.1 | 221.3 | 7.2 | - |
| 2024-04-28 23:00 | 10.6 | 84.8 | 0.9 | 248.8 | 7.4 | - |
| 2024-04-28 22:00 | 12.2 | 81.9 | 1.1 | 258.3 | 10.1 | 7.3 |
| 2024-04-28 21:00 | 10.3 | 89.0 | 1.4 | 313.6 | 9.9 | 5.8 |
| 2024-04-28 20:00 | 9.9 | 95.3 | 1.0 | 290.8 | 3.6 | 2.9 |
| 2024-04-28 19:00 | 11.0 | 98.5 | 1.0 | 333.6 | 1.7 | - |
| 2024-04-28 18:00 | 13.4 | 104.6 | 1.2 | 338.8 | 7.1 | 1.7 |
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.