Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-19 20:00 | 14.6 | 99.6 | 2.1 | 302.3 | 10.9 | 10.2 |
| 2024-05-19 19:00 | 11.7 | 106.8 | 2.1 | 298.2 | 11.0 | 9.3 |
| 2024-05-19 18:00 | 13.3 | 99.9 | 1.9 | 308.0 | 16.7 | 11.4 |
| 2024-05-19 17:00 | 14.7 | 100.4 | 2.2 | 322.4 | 21.4 | 12.7 |
| 2024-05-19 16:00 | 19.6 | 95.7 | 1.9 | 378.4 | 20.5 | 13.7 |
| 2024-05-19 15:00 | 16.6 | 100.2 | 1.7 | 345.6 | 18.9 | 15.1 |
| 2024-05-19 14:00 | 15.9 | 98.8 | 1.8 | 365.0 | 20.8 | 15.2 |
| 2024-05-19 13:00 | 17.8 | 93.7 | 1.9 | 348.8 | 22.7 | 15.5 |
| 2024-05-19 12:00 | 17.3 | 96.1 | 2.1 | 321.2 | 22.2 | 14.9 |
| 2024-05-19 11:00 | 17.9 | 94.7 | 2.0 | 354.1 | 23.0 | 14.3 |
| 2024-05-19 10:00 | 17.9 | 94.5 | 2.1 | 371.4 | 25.3 | 17.8 |
| 2024-05-19 09:00 | 20.3 | 103.2 | 2.7 | 428.7 | 27.5 | 20.6 |
| 2024-05-19 08:00 | 18.7 | 126.0 | 3.3 | 386.9 | 24.3 | 18.5 |
| 2024-05-19 07:00 | 16.4 | 133.5 | 3.1 | 351.6 | 23.5 | 18.6 |
| 2024-05-19 06:00 | 10.1 | 145.6 | 3.2 | 331.2 | 20.8 | 16.8 |
| 2024-05-19 05:00 | 8.2 | 149.9 | 3.1 | 307.0 | 19.2 | 15.5 |
| 2024-05-19 04:00 | 8.7 | 146.6 | 3.1 | 287.6 | 21.8 | 17.8 |
| 2024-05-19 03:00 | 8.7 | 146.6 | 3.0 | 278.9 | 23.2 | 19.0 |
| 2024-05-19 02:00 | 11.8 | 147.4 | 2.9 | 309.4 | 21.9 | 17.3 |
| 2024-05-19 01:00 | 11.8 | 148.7 | 2.8 | 284.6 | 20.4 | 16.2 |
| 2024-05-19 00:00 | 14.6 | 142.6 | 2.6 | 290.7 | 20.2 | 16.6 |
| 2024-05-18 23:00 | 19.3 | 142.3 | 2.7 | 309.8 | 17.6 | 14.7 |
| 2024-05-18 22:00 | 20.0 | 143.2 | 2.9 | 324.3 | 15.3 | 14.2 |
| 2024-05-18 21:00 | 18.3 | 141.0 | 2.3 | 313.2 | 15.0 | 14.4 |
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.