Past 24 Hours Pollutant Concentration Summary
Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-24 22:00 | 71.0 | 34.7 | 2.5 | 601.4 | 44.7 | 36.6 |
| 2024-04-24 21:00 | 110.1 | 12.6 | 3.8 | 611.4 | 39.9 | 32.4 |
| 2024-04-24 20:00 | 120.4 | 10.3 | 4.1 | 668.5 | 47.2 | 36.3 |
| 2024-04-24 19:00 | 124.8 | 5.0 | 5.6 | 711.3 | 45.0 | 32.5 |
| 2024-04-24 18:00 | 121.2 | 5.4 | 4.7 | 684.3 | 45.5 | 33.1 |
| 2024-04-24 17:00 | 107.9 | 11.3 | 3.9 | 563.5 | 48.4 | 35.9 |
| 2024-04-24 16:00 | 107.2 | 5.7 | 6.8 | 775.2 | 50.0 | 36.0 |
| 2024-04-24 15:00 | 98.4 | 4.0 | 7.8 | 700.8 | 43.7 | 32.1 |
| 2024-04-24 14:00 | 92.0 | 3.7 | 5.7 | 814.0 | 42.8 | 31.0 |
| 2024-04-24 13:00 | 93.4 | 2.9 | 6.5 | 873.0 | 37.1 | 26.2 |
| 2024-04-24 12:00 | 98.7 | 3.0 | 7.4 | 1,042.5 | 36.4 | 27.5 |
| 2024-04-24 11:00 | 99.7 | 3.0 | 7.7 | 830.4 | 38.2 | 28.6 |
| 2024-04-24 10:00 | - | 3.0 | 7.7 | 740.3 | 32.5 | 24.0 |
| 2024-04-24 09:00 | 104.4 | 2.3 | 6.5 | 735.9 | 31.5 | 22.9 |
| 2024-04-24 08:00 | 102.2 | 4.2 | 5.4 | 680.9 | 23.2 | 18.5 |
| 2024-04-24 07:00 | 69.3 | - | 3.6 | 482.1 | 26.7 | 19.2 |
| 2024-04-24 06:00 | 75.5 | 1.7 | - | 506.2 | 24.4 | 16.9 |
| 2024-04-24 05:00 | 71.8 | 3.1 | 2.9 | 466.6 | 21.4 | 13.8 |
| 2024-04-24 04:00 | 71.1 | 5.8 | 2.9 | 462.8 | 20.3 | 13.9 |
| 2024-04-24 03:00 | - | 15.3 | - | - | 19.6 | 14.1 |
| 2024-04-24 02:00 | 75.1 | 12.5 | 2.8 | 497.9 | 24.9 | 17.2 |
| 2024-04-24 01:00 | - | 6.0 | 3.6 | 565.6 | 24.9 | 19.6 |
| 2024-04-24 00:00 | 82.4 | 16.8 | 3.9 | 516.2 | 16.8 | 13.5 |
| 2024-04-23 23:00 | 51.5 | 37.5 | 2.3 | 442.9 | 19.6 | 15.0 |
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.