Past 24 Hours Pollutant Concentration Summary
Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-28 20:00 | 57.9 | 43.0 | 2.1 | 512.1 | 22.3 | 16.0 |
| 2024-04-28 19:00 | 54.1 | 53.2 | 2.1 | 421.6 | 16.5 | 11.5 |
| 2024-04-28 18:00 | 62.3 | 56.3 | 2.1 | 398.6 | 11.9 | 8.1 |
| 2024-04-28 17:00 | 60.9 | 52.8 | 1.9 | 377.1 | 14.5 | 9.7 |
| 2024-04-28 16:00 | 67.2 | 48.3 | 1.9 | 429.9 | 16.4 | 11.9 |
| 2024-04-28 15:00 | 63.9 | 53.8 | 1.9 | 475.1 | 9.4 | 6.3 |
| 2024-04-28 14:00 | 83.4 | 41.4 | 2.2 | 526.2 | 17.3 | 13.9 |
| 2024-04-28 13:00 | 67.7 | 57.3 | 1.7 | 706.8 | 19.1 | 12.0 |
| 2024-04-28 12:00 | 64.0 | 62.3 | 1.8 | 343.1 | 22.4 | 13.3 |
| 2024-04-28 11:00 | 55.2 | 60.1 | 1.7 | 354.1 | 21.8 | 10.0 |
| 2024-04-28 10:00 | 52.6 | 63.3 | 2.0 | 338.8 | 16.9 | 7.9 |
| 2024-04-28 09:00 | 49.3 | 70.1 | 1.6 | 326.4 | 10.1 | 6.1 |
| 2024-04-28 08:00 | 42.9 | 71.4 | 1.6 | 312.3 | 13.6 | 9.7 |
| 2024-04-28 07:00 | 33.0 | 69.2 | 2.0 | 297.1 | 10.6 | 4.9 |
| 2024-04-28 06:00 | 22.9 | 60.1 | 1.8 | 272.3 | 17.6 | 7.9 |
| 2024-04-28 05:00 | 29.0 | 13.2 | 2.1 | 203.5 | 19.7 | 10.9 |
| 2024-04-28 04:00 | 26.0 | 16.1 | 2.3 | 246.1 | 23.6 | 14.7 |
| 2024-04-28 03:00 | - | 12.8 | - | - | 26.5 | 14.9 |
| 2024-04-28 02:00 | 39.1 | 6.3 | 2.7 | 328.0 | 22.5 | 10.7 |
| 2024-04-28 01:00 | 35.1 | 8.3 | 3.0 | 349.3 | 21.9 | 10.0 |
| 2024-04-28 00:00 | 32.5 | 10.2 | 2.4 | 302.5 | 24.9 | 12.9 |
| 2024-04-27 23:00 | 35.1 | 11.7 | 2.6 | 382.0 | 26.7 | 13.7 |
| 2024-04-27 22:00 | 43.6 | 5.6 | 2.7 | 480.7 | 33.8 | 18.6 |
| 2024-04-27 21:00 | 39.9 | 7.1 | 3.2 | 521.2 | 32.3 | 17.8 |
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.