Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-10-16 15:00 | 25.9 | 99.5 | 9.7 | 607.9 | 27.3 | 15.7 |
| 2021-10-16 14:00 | 28.2 | 101.9 | 9.5 | 622.0 | 28.4 | 16.7 |
| 2021-10-16 13:00 | 31.2 | 100.4 | 9.8 | 682.2 | 30.8 | 18.4 |
| 2021-10-16 12:00 | 37.0 | 74.3 | 9.5 | 709.6 | 27.0 | 14.4 |
| 2021-10-16 11:00 | 33.3 | 47.9 | 9.9 | 754.0 | 28.9 | 15.0 |
| 2021-10-16 10:00 | 34.2 | 28.7 | 9.8 | 751.1 | 24.2 | 15.6 |
| 2021-10-16 09:00 | 38.3 | 15.3 | 9.7 | 765.8 | 26.1 | 18.6 |
| 2021-10-16 08:00 | 39.1 | 9.9 | 9.5 | 752.1 | 23.7 | 17.2 |
| 2021-10-16 07:00 | 27.3 | 18.6 | 9.4 | 635.2 | 22.8 | 16.3 |
| 2021-10-16 06:00 | 25.9 | 17.9 | 9.3 | 606.6 | 23.1 | 15.6 |
| 2021-10-16 05:00 | 25.8 | 16.3 | 9.7 | 593.4 | 22.8 | 15.5 |
| 2021-10-16 04:00 | 24.3 | 19.0 | 9.5 | 585.1 | 22.7 | 15.2 |
| 2021-10-16 03:00 | 31.3 | 13.4 | 9.4 | 574.0 | 20.0 | 12.9 |
| 2021-10-16 02:00 | 38.8 | 6.3 | 9.8 | 585.5 | 17.4 | 11.4 |
| 2021-10-16 01:00 | 41.5 | 6.7 | 9.5 | 591.8 | 16.5 | 11.1 |
| 2021-10-16 00:00 | 44.0 | 4.9 | 9.3 | 616.8 | 15.0 | 9.6 |
| 2021-10-15 23:00 | 47.3 | 2.8 | 9.2 | 625.2 | 14.9 | 9.7 |
| 2021-10-15 22:00 | 44.9 | 5.1 | 9.2 | 617.5 | 17.8 | 13.0 |
| 2021-10-15 21:00 | 53.9 | 2.4 | 9.3 | 678.1 | 18.4 | 13.4 |
| 2021-10-15 20:00 | 62.4 | 2.2 | 9.3 | 716.3 | 14.2 | 10.7 |
| 2021-10-15 19:00 | 61.0 | 5.5 | 9.1 | 647.2 | 13.2 | 10.0 |
| 2021-10-15 18:00 | 60.0 | 9.3 | 8.9 | 594.7 | 8.2 | 5.8 |
| 2021-10-15 17:00 | 46.4 | 20.8 | 8.9 | 520.4 | 6.8 | 4.6 |
| 2021-10-15 16:00 | 35.0 | 36.6 | 9.2 | 477.9 | 16.3 | 13.5 |
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.
