Tuen Mun
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-10-22 05:00 | 11.2 | 43.5 | 3.7 | 567.8 | 7.0 | 7.0 |
| 2021-10-22 04:00 | 10.2 | 44.7 | 4.0 | 547.7 | 8.9 | 7.0 |
| 2021-10-22 03:00 | 10.8 | 47.4 | 3.8 | 574.6 | 10.9 | 8.9 |
| 2021-10-22 02:00 | 14.9 | 45.5 | 3.8 | 589.2 | 12.9 | 10.9 |
| 2021-10-22 01:00 | 17.3 | 46.4 | 3.9 | 591.4 | 20.7 | 10.0 |
| 2021-10-22 00:00 | 21.8 | 43.6 | 4.3 | 597.2 | 28.7 | 15.8 |
| 2021-10-21 23:00 | 33.2 | 31.1 | 4.7 | 654.0 | 30.0 | 17.9 |
| 2021-10-21 22:00 | 40.8 | 18.7 | 4.7 | 749.1 | 41.6 | 18.0 |
| 2021-10-21 21:00 | 45.4 | 16.2 | 4.6 | 816.9 | 41.0 | 17.0 |
| 2021-10-21 20:00 | 49.8 | 13.7 | 4.9 | 815.4 | 41.0 | 16.0 |
| 2021-10-21 19:00 | 55.5 | 10.8 | 5.2 | 813.3 | 42.0 | 15.0 |
| 2021-10-21 18:00 | 60.4 | 15.4 | 5.4 | 779.0 | 36.2 | 11.1 |
| 2021-10-21 17:00 | 48.8 | 26.4 | 5.0 | 710.2 | 32.1 | 12.0 |
| 2021-10-21 16:00 | 39.0 | 36.6 | 4.9 | 652.2 | 41.7 | 13.9 |
| 2021-10-21 15:00 | 42.0 | 35.1 | 5.3 | 682.3 | 43.9 | 12.1 |
| 2021-10-21 14:00 | 34.0 | 52.0 | 5.0 | 648.4 | 46.9 | 19.7 |
| 2021-10-21 13:00 | 47.3 | 30.2 | 5.2 | 761.9 | 56.7 | 27.7 |
| 2021-10-21 12:00 | 60.0 | 33.1 | 9.7 | 788.1 | 29.0 | 17.4 |
| 2021-10-21 11:00 | 51.4 | 30.6 | 6.3 | 583.8 | 27.0 | 11.2 |
| 2021-10-21 10:00 | 53.8 | 23.9 | 5.1 | 641.7 | 28.0 | 14.9 |
| 2021-10-21 09:00 | 61.3 | 13.6 | 5.9 | 710.9 | 29.0 | 15.0 |
| 2021-10-21 08:00 | 60.9 | 6.8 | 5.9 | 801.6 | 27.1 | 15.0 |
| 2021-10-21 07:00 | 51.0 | 9.5 | 4.9 | 714.2 | 21.2 | 8.2 |
| 2021-10-21 06:00 | 37.2 | 26.2 | 4.8 | 639.0 | 21.0 | 9.9 |
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.
