Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-26 15:00 | 30.2 | 27.6 | 1.4 | 549.4 | 16.8 | 11.1 |
| 2024-04-26 14:00 | 77.7 | 16.7 | 2.2 | 913.0 | 13.2 | 11.3 |
| 2024-04-26 13:00 | 75.0 | 24.3 | 1.5 | 786.8 | 6.2 | 5.8 |
| 2024-04-26 12:00 | 64.9 | 38.4 | 1.4 | 784.8 | 9.3 | 8.2 |
| 2024-04-26 11:00 | 82.6 | 25.5 | 1.8 | 869.6 | 4.1 | 2.5 |
| 2024-04-26 10:00 | 41.5 | 65.5 | 1.3 | 639.2 | 8.6 | 6.3 |
| 2024-04-26 09:00 | 25.7 | 37.1 | 1.3 | 553.1 | 19.8 | 16.4 |
| 2024-04-26 08:00 | 20.5 | 20.8 | 1.7 | 511.3 | 14.4 | 11.0 |
| 2024-04-26 07:00 | 18.5 | 25.1 | 1.5 | 534.0 | 10.5 | 7.4 |
| 2024-04-26 06:00 | 11.6 | 33.1 | 1.2 | 490.3 | 9.7 | 6.9 |
| 2024-04-26 05:00 | 10.2 | 38.1 | 1.1 | 511.4 | 12.2 | 7.8 |
| 2024-04-26 04:00 | 16.3 | 39.7 | 1.6 | 590.6 | 14.4 | 8.9 |
| 2024-04-26 03:00 | 28.0 | 31.5 | 1.8 | 622.7 | 13.4 | 7.6 |
| 2024-04-26 02:00 | 40.2 | 19.9 | 2.1 | 647.9 | 14.6 | 8.8 |
| 2024-04-26 01:00 | - | - | - | - | 12.7 | 7.7 |
| 2024-04-26 00:00 | 41.2 | 7.2 | 2.5 | 602.5 | 13.3 | 9.0 |
| 2024-04-25 23:00 | 41.9 | 8.0 | 2.2 | 616.4 | 9.5 | 5.7 |
| 2024-04-25 22:00 | 39.4 | 10.0 | 1.8 | 600.3 | 11.4 | 7.7 |
| 2024-04-25 21:00 | 36.4 | 12.8 | 2.1 | 634.7 | 9.2 | 6.8 |
| 2024-04-25 20:00 | 15.2 | 33.5 | 1.4 | 527.3 | 10.7 | 7.6 |
| 2024-04-25 19:00 | 25.8 | 30.4 | 1.6 | 526.2 | 12.0 | 7.1 |
| 2024-04-25 18:00 | 36.7 | 25.5 | 2.1 | 523.6 | 10.0 | 6.5 |
| 2024-04-25 17:00 | 44.1 | 22.5 | 2.1 | 511.7 | 9.1 | 6.1 |
| 2024-04-25 16:00 | 27.0 | 48.9 | 1.9 | 511.3 | 8.3 | 4.0 |
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.