Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-23 23:00 | 40.9 | 36.4 | 1.7 | 635.3 | 12.1 | 9.7 |
| 2024-04-23 22:00 | 48.8 | 40.1 | 2.1 | 625.1 | 9.7 | 7.3 |
| 2024-04-23 21:00 | 63.6 | 26.8 | 2.2 | 653.5 | 10.1 | 8.6 |
| 2024-04-23 20:00 | 64.9 | 37.4 | 2.0 | 705.6 | 8.3 | 6.4 |
| 2024-04-23 19:00 | 47.5 | 54.8 | 1.6 | 652.3 | 9.5 | 6.9 |
| 2024-04-23 18:00 | 44.2 | 63.8 | 1.1 | 623.3 | 12.7 | 7.3 |
| 2024-04-23 17:00 | 31.3 | 78.4 | 1.2 | 597.5 | 13.6 | 8.5 |
| 2024-04-23 16:00 | 34.8 | 66.5 | 0.9 | 595.9 | 6.1 | 4.8 |
| 2024-04-23 15:00 | 49.6 | 49.0 | 1.3 | 652.3 | 6.9 | 5.6 |
| 2024-04-23 14:00 | 46.7 | 58.7 | 1.7 | 609.1 | 10.1 | 7.0 |
| 2024-04-23 13:00 | 48.4 | 58.9 | 1.8 | 639.5 | 12.6 | 10.8 |
| 2024-04-23 12:00 | 59.0 | 13.2 | 1.2 | 682.2 | 11.1 | 8.8 |
| 2024-04-23 11:00 | 58.5 | - | 1.5 | 785.1 | 12.2 | 11.2 |
| 2024-04-23 10:00 | 48.0 | 21.0 | 1.5 | 801.2 | 20.3 | 18.4 |
| 2024-04-23 09:00 | 49.0 | 10.7 | 1.2 | 745.5 | 30.1 | 25.0 |
| 2024-04-23 08:00 | 54.1 | 8.3 | 2.5 | 944.3 | 23.6 | 19.6 |
| 2024-04-23 07:00 | 43.5 | 9.7 | 1.2 | 806.4 | 24.6 | 19.6 |
| 2024-04-23 06:00 | 35.2 | 12.5 | 1.2 | 745.1 | 28.9 | 21.7 |
| 2024-04-23 05:00 | 38.0 | 10.6 | 1.2 | 744.4 | 24.6 | 17.5 |
| 2024-04-23 04:00 | 44.2 | 6.6 | 1.7 | 713.5 | 22.2 | 15.6 |
| 2024-04-23 03:00 | 49.1 | 11.7 | 1.4 | 678.6 | 20.7 | 15.5 |
| 2024-04-23 02:00 | 42.1 | 10.2 | 1.8 | 678.7 | 23.4 | 17.3 |
| 2024-04-23 01:00 | 52.6 | 6.0 | 2.3 | 801.3 | 23.8 | 16.1 |
| 2024-04-23 00:00 | 52.9 | 9.0 | 1.9 | 817.9 | 23.1 | 18.1 |
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.
