Tuen Mun
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-09-21 21:00 | 37.8 | 31.2 | 5.5 | 668.7 | 13.0 | 9.0 |
| 2021-09-21 20:00 | 25.7 | 48.6 | 5.2 | 551.0 | 13.0 | 4.1 |
| 2021-09-21 19:00 | 37.4 | 36.9 | 5.7 | 537.0 | 7.1 | 6.0 |
| 2021-09-21 18:00 | 46.4 | 28.8 | 5.9 | 556.0 | 16.8 | 9.0 |
| 2021-09-21 17:00 | 59.0 | 23.3 | 5.8 | 589.7 | 22.9 | 12.9 |
| 2021-09-21 16:00 | 65.9 | 19.2 | 5.5 | 618.4 | 18.1 | 10.1 |
| 2021-09-21 15:00 | 45.9 | 35.1 | 5.8 | 559.8 | 21.9 | 13.0 |
| 2021-09-21 14:00 | 53.1 | 46.2 | 7.2 | 599.0 | 33.8 | 17.9 |
| 2021-09-21 13:00 | 48.3 | 67.7 | 6.4 | 523.3 | 23.2 | 6.2 |
| 2021-09-21 12:00 | 26.1 | 44.6 | 4.9 | 492.5 | 15.1 | 7.0 |
| 2021-09-21 11:00 | 33.4 | 29.3 | 4.8 | 548.1 | 20.9 | 6.0 |
| 2021-09-21 10:00 | 36.7 | 16.6 | 5.2 | 585.8 | 10.2 | 6.0 |
| 2021-09-21 09:00 | 26.1 | 15.2 | 5.3 | 558.1 | 11.0 | 5.0 |
| 2021-09-21 08:00 | 29.6 | 8.5 | 5.7 | 663.7 | 14.0 | 6.0 |
| 2021-09-21 07:00 | 27.7 | 6.0 | 5.0 | 598.7 | 12.0 | 7.0 |
| 2021-09-21 06:00 | 26.4 | 6.3 | 4.4 | 612.0 | 12.0 | 4.1 |
| 2021-09-21 05:00 | 27.5 | 7.3 | 4.5 | 685.7 | 9.1 | 4.0 |
| 2021-09-21 04:00 | 32.2 | 4.9 | 4.8 | 636.2 | 10.0 | 7.0 |
| 2021-09-21 03:00 | 35.4 | 4.8 | 5.0 | 638.1 | 15.9 | 7.0 |
| 2021-09-21 02:00 | 39.4 | 4.9 | 4.8 | 628.7 | 14.0 | 10.9 |
| 2021-09-21 01:00 | 42.8 | 6.1 | 4.6 | 600.2 | 17.9 | 11.0 |
| 2021-09-21 00:00 | 45.1 | 5.1 | 6.6 | 624.2 | 16.0 | 9.0 |
| 2021-09-20 23:00 | 39.1 | 9.2 | 6.2 | 523.1 | 17.9 | 10.0 |
| 2021-09-20 22:00 | 42.7 | 9.3 | 5.4 | 503.0 | 13.1 | 12.0 |
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.
