Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-20 22:00 | 26.4 | 71.8 | 1.0 | 644.0 | 2.9 | 2.8 |
| 2024-04-20 21:00 | 26.9 | 76.7 | 1.3 | 653.7 | 0.8 | - |
| 2024-04-20 20:00 | 28.2 | 73.1 | 1.4 | 619.8 | 12.5 | 5.8 |
| 2024-04-20 19:00 | 33.6 | 66.0 | 1.1 | 578.8 | 20.5 | 11.9 |
| 2024-04-20 18:00 | 24.3 | 44.0 | 1.6 | 535.9 | 20.5 | 14.0 |
| 2024-04-20 17:00 | 18.2 | 48.6 | 1.4 | 494.9 | 21.0 | 13.9 |
| 2024-04-20 16:00 | 20.2 | 54.9 | 1.3 | 497.8 | 23.6 | 15.6 |
| 2024-04-20 15:00 | 26.4 | 49.3 | 1.2 | 551.5 | 19.5 | 11.7 |
| 2024-04-20 14:00 | 20.6 | 57.6 | 1.2 | 518.7 | 18.6 | 11.3 |
| 2024-04-20 13:00 | 18.1 | 56.6 | 1.3 | 534.2 | 20.7 | 13.5 |
| 2024-04-20 12:00 | 22.8 | 47.3 | 1.5 | 561.4 | 20.2 | 13.6 |
| 2024-04-20 11:00 | 24.3 | 45.9 | 1.0 | 511.1 | 18.4 | 12.6 |
| 2024-04-20 10:00 | 22.8 | 46.9 | 1.7 | 563.8 | 18.8 | 13.2 |
| 2024-04-20 09:00 | 28.1 | 37.2 | 1.9 | 541.0 | 16.1 | 10.7 |
| 2024-04-20 08:00 | 35.6 | 29.7 | 1.6 | 562.2 | 18.1 | 12.8 |
| 2024-04-20 07:00 | 21.5 | 40.5 | 1.1 | 509.2 | 15.6 | 11.3 |
| 2024-04-20 06:00 | 11.1 | 50.4 | 1.1 | 484.0 | 11.7 | 7.5 |
| 2024-04-20 05:00 | 15.7 | 45.9 | 1.4 | 479.1 | 12.8 | 8.7 |
| 2024-04-20 04:00 | 15.9 | 43.9 | 1.3 | 494.0 | 12.3 | 7.7 |
| 2024-04-20 03:00 | 16.1 | 44.8 | 1.2 | 508.8 | 15.8 | 11.0 |
| 2024-04-20 02:00 | 13.5 | 47.7 | 2.3 | 499.0 | 15.9 | 11.3 |
| 2024-04-20 01:00 | - | - | - | - | 16.2 | 11.7 |
| 2024-04-20 00:00 | 24.3 | 34.7 | 1.1 | 563.1 | 14.1 | 9.8 |
| 2024-04-19 23:00 | 28.2 | 32.1 | 1.7 | 523.4 | 11.3 | 7.8 |
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.
