Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-19 19:00 | 39.7 | 32.9 | 2.9 | 551.8 | 18.4 | 12.0 |
| 2024-04-19 18:00 | 31.8 | 39.4 | 2.3 | 494.2 | 14.8 | 8.2 |
| 2024-04-19 17:00 | 31.3 | 39.8 | 2.4 | 521.9 | 12.9 | 7.0 |
| 2024-04-19 16:00 | 25.0 | 47.3 | 1.9 | 484.2 | 16.5 | 10.5 |
| 2024-04-19 15:00 | 19.7 | 48.6 | 1.4 | 477.8 | 17.4 | 12.1 |
| 2024-04-19 14:00 | 22.2 | 46.8 | 1.4 | 462.8 | 19.4 | 14.2 |
| 2024-04-19 13:00 | 18.0 | 49.6 | 1.5 | 486.5 | 18.9 | 13.7 |
| 2024-04-19 12:00 | 18.5 | 47.4 | 1.5 | 512.8 | 23.7 | 19.2 |
| 2024-04-19 11:00 | 22.5 | 42.4 | 1.4 | 523.0 | 18.8 | 14.5 |
| 2024-04-19 10:00 | 35.3 | 30.5 | 1.7 | 539.7 | 16.1 | 11.9 |
| 2024-04-19 09:00 | 32.4 | 31.4 | 1.8 | 535.4 | 13.7 | 9.9 |
| 2024-04-19 08:00 | 29.1 | 27.9 | 1.6 | 546.2 | 10.4 | 7.3 |
| 2024-04-19 07:00 | 18.7 | 35.9 | 1.0 | 503.0 | 8.6 | 6.4 |
| 2024-04-19 06:00 | 15.4 | 37.1 | 1.2 | 486.5 | 9.3 | 7.3 |
| 2024-04-19 05:00 | 16.3 | 35.3 | 1.0 | 491.5 | 12.3 | 10.0 |
| 2024-04-19 04:00 | 12.7 | 37.5 | 1.5 | 468.7 | 11.4 | 8.3 |
| 2024-04-19 03:00 | 21.6 | 33.2 | 1.7 | 496.5 | 14.3 | 10.9 |
| 2024-04-19 02:00 | 31.6 | 25.2 | 1.5 | 545.6 | 12.2 | 7.8 |
| 2024-04-19 01:00 | 40.1 | 28.8 | 2.0 | 561.3 | 14.6 | 9.9 |
| 2024-04-19 00:00 | 76.1 | 11.3 | 2.4 | 698.3 | 17.3 | 12.0 |
| 2024-04-18 23:00 | 67.2 | 21.9 | 1.9 | 725.8 | 11.1 | 7.5 |
| 2024-04-18 22:00 | 68.3 | 36.8 | 1.9 | 661.1 | 7.4 | 4.0 |
| 2024-04-18 21:00 | 63.8 | 48.8 | 2.2 | 671.8 | 12.9 | 9.4 |
| 2024-04-18 20:00 | 67.3 | 50.3 | 2.3 | 636.1 | 10.4 | 6.4 |
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.
