Past 24 Hours Pollutant Concentration Summary
Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-27 22:00 | 26.9 | 17.3 | 0.9 | 534.7 | 17.9 | 6.9 |
| 2024-04-27 21:00 | 29.2 | 14.0 | 1.2 | 537.7 | 22.2 | 10.9 |
| 2024-04-27 20:00 | 26.5 | 17.0 | 1.6 | 527.8 | 18.7 | 7.8 |
| 2024-04-27 19:00 | 25.6 | 22.4 | 1.5 | 541.9 | 16.3 | 6.3 |
| 2024-04-27 18:00 | 24.0 | 26.9 | 1.4 | 522.7 | 18.9 | 8.5 |
| 2024-04-27 17:00 | 19.7 | 29.3 | 1.6 | 524.1 | 19.2 | 9.1 |
| 2024-04-27 16:00 | 17.3 | 35.9 | 1.7 | 511.2 | 18.0 | 8.4 |
| 2024-04-27 15:00 | 19.4 | 36.6 | 1.5 | 499.8 | 18.2 | 9.2 |
| 2024-04-27 14:00 | 20.6 | 34.5 | 1.4 | 516.1 | 19.2 | 10.6 |
| 2024-04-27 13:00 | 23.5 | 28.3 | 1.5 | 562.1 | 17.7 | 9.4 |
| 2024-04-27 12:00 | 25.6 | 24.8 | 1.4 | 544.5 | 20.1 | 10.9 |
| 2024-04-27 11:00 | 27.7 | 19.3 | 1.7 | 553.7 | 19.8 | 10.5 |
| 2024-04-27 10:00 | 35.9 | 18.2 | 1.8 | 625.0 | 22.1 | 12.1 |
| 2024-04-27 09:00 | 36.1 | 14.6 | 1.7 | 562.8 | 22.0 | 12.4 |
| 2024-04-27 08:00 | 26.5 | 21.5 | 1.8 | 572.5 | 19.7 | 11.1 |
| 2024-04-27 07:00 | 21.1 | 24.3 | 1.2 | 538.9 | 18.7 | 10.3 |
| 2024-04-27 06:00 | 13.3 | 37.9 | 1.1 | 519.2 | 16.8 | 8.1 |
| 2024-04-27 05:00 | 15.4 | 30.4 | 0.8 | 527.8 | 15.4 | 6.3 |
| 2024-04-27 04:00 | 19.1 | 24.8 | 0.7 | 532.6 | 14.9 | 6.2 |
| 2024-04-27 03:00 | 15.0 | 35.5 | 1.3 | 492.3 | 16.8 | 8.2 |
| 2024-04-27 02:00 | 14.1 | 34.2 | 1.2 | 504.2 | 16.6 | 7.4 |
| 2024-04-27 01:00 | 19.6 | 26.4 | 1.3 | 570.1 | 18.2 | 8.8 |
| 2024-04-27 00:00 | 26.7 | 21.7 | 1.1 | 581.0 | 17.6 | 9.1 |
| 2024-04-26 23:00 | 16.8 | 36.5 | 1.1 | 532.2 | 17.7 | 9.2 |
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.