Past 24 Hours Pollutant Concentration Summary
Tuen Mun
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-06-24 02:00 | 49.1 | 14.4 | 3.1 | 554.3 | 11.0 | - |
| 2021-06-24 01:00 | - | 10.0 | 3.6 | 617.7 | 17.8 | 6.2 |
| 2021-06-24 00:00 | 63.8 | 6.1 | 3.9 | 667.3 | 17.0 | 5.0 |
| 2021-06-23 23:00 | 58.0 | 7.3 | 3.8 | 687.6 | 18.9 | 6.0 |
| 2021-06-23 22:00 | 51.4 | 16.1 | 3.4 | 696.4 | 17.1 | 5.0 |
| 2021-06-23 21:00 | 36.4 | 34.1 | 3.4 | 682.1 | 14.1 | 7.9 |
| 2021-06-23 20:00 | 45.9 | 29.1 | 3.5 | 673.2 | 9.2 | - |
| 2021-06-23 19:00 | 52.3 | 25.6 | 3.4 | 673.4 | 5.1 | 4.2 |
| 2021-06-23 18:00 | 33.8 | 45.3 | 3.2 | 579.5 | 9.8 | 5.9 |
| 2021-06-23 17:00 | 39.5 | 39.0 | 3.2 | 602.0 | 11.9 | 8.9 |
| 2021-06-23 16:00 | 51.6 | 26.4 | 3.4 | 577.8 | 13.0 | 8.0 |
| 2021-06-23 15:00 | 51.6 | 23.1 | 3.4 | 589.7 | 14.0 | 9.9 |
| 2021-06-23 14:00 | 32.5 | 52.6 | 3.2 | 557.0 | 19.8 | 9.0 |
| 2021-06-23 13:00 | 47.7 | 37.0 | 3.5 | 618.3 | 23.9 | 10.0 |
| 2021-06-23 12:00 | 39.7 | 33.1 | 3.5 | 582.2 | 16.3 | 12.9 |
| 2021-06-23 11:00 | 39.3 | 30.5 | 3.5 | 624.7 | 17.9 | 10.1 |
| 2021-06-23 10:00 | 39.0 | 30.0 | 3.7 | 603.8 | 14.1 | 9.0 |
| 2021-06-23 09:00 | 62.8 | 11.8 | 4.2 | 881.6 | 15.0 | 9.0 |
| 2021-06-23 08:00 | 60.0 | 12.5 | 4.0 | 864.4 | 14.0 | 9.0 |
| 2021-06-23 07:00 | 51.2 | 11.3 | 3.7 | 864.7 | 16.9 | 6.1 |
| 2021-06-23 06:00 | 45.4 | 8.8 | 3.8 | 758.1 | 14.1 | 3.1 |
| 2021-06-23 05:00 | 37.6 | 20.4 | 2.5 | 660.5 | 14.0 | 3.0 |
| 2021-06-23 04:00 | 30.3 | 29.8 | 2.6 | 575.3 | 15.9 | 5.9 |
| 2021-06-23 03:00 | 35.4 | 27.2 | 3.2 | 582.9 | 18.9 | 6.0 |
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.