Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-05-28 16:00 | 27.3 | 101.8 | 5.3 | 573.1 | 19.3 | 11.1 |
| 2023-05-28 15:00 | 24.5 | 96.4 | 5.3 | 566.6 | 19.2 | 9.1 |
| 2023-05-28 14:00 | 22.5 | 89.5 | 4.9 | 565.5 | 20.8 | 11.4 |
| 2023-05-28 13:00 | 24.5 | 75.7 | 4.9 | 553.0 | 18.9 | 10.4 |
| 2023-05-28 12:00 | 19.7 | 72.0 | 4.5 | 529.0 | 15.9 | 8.2 |
| 2023-05-28 11:00 | 12.0 | 73.6 | 4.3 | 528.8 | 16.2 | 8.5 |
| 2023-05-28 10:00 | 11.5 | 66.3 | 4.4 | 533.9 | 14.6 | 6.7 |
| 2023-05-28 09:00 | 12.6 | 55.2 | 4.3 | 525.6 | 14.6 | 6.9 |
| 2023-05-28 08:00 | 14.0 | 49.4 | 4.4 | 536.7 | 12.6 | 5.0 |
| 2023-05-28 07:00 | 20.8 | 36.9 | 4.4 | 566.1 | 14.7 | 8.5 |
| 2023-05-28 06:00 | 17.8 | 33.0 | 4.5 | 553.9 | 14.8 | 8.7 |
| 2023-05-28 05:00 | 15.8 | 36.1 | 4.5 | 545.8 | 14.4 | 8.3 |
| 2023-05-28 04:00 | 10.5 | 46.1 | 4.4 | 527.4 | 15.1 | 9.2 |
| 2023-05-28 03:00 | 11.4 | 48.7 | 4.4 | 549.8 | 15.4 | 9.6 |
| 2023-05-28 02:00 | 14.2 | 46.3 | 4.2 | 545.9 | 16.8 | 10.2 |
| 2023-05-28 01:00 | - | - | - | - | 17.5 | 10.6 |
| 2023-05-28 00:00 | 19.0 | 42.2 | 4.3 | 543.7 | 18.4 | 11.1 |
| 2023-05-27 23:00 | 22.7 | 45.0 | 4.4 | 562.4 | 17.7 | 10.6 |
| 2023-05-27 22:00 | 18.2 | 55.0 | 4.2 | 517.5 | 15.2 | 9.0 |
| 2023-05-27 21:00 | 23.8 | 48.8 | 4.4 | 552.0 | 15.8 | 9.7 |
| 2023-05-27 20:00 | 26.9 | 44.9 | 4.5 | 599.3 | 17.8 | 11.6 |
| 2023-05-27 19:00 | 25.1 | 51.4 | 4.5 | 598.2 | 18.7 | 11.8 |
| 2023-05-27 18:00 | 26.7 | 52.0 | 4.6 | 607.2 | 17.2 | 10.5 |
| 2023-05-27 17:00 | 26.1 | 55.6 | 4.5 | 541.9 | 18.3 | 11.0 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(3) Concentration shown is in µg/m3.
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.
