Past 24 Hours Pollutant Concentration Summary
Tuen Mun
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-09-27 10:00 | - | 57.1 | - | - | 28.7 | 19.8 |
| 2022-09-27 09:00 | 41.4 | 34.7 | 5.4 | 531.2 | 24.2 | 10.3 |
| 2022-09-27 08:00 | 40.7 | 30.1 | 4.9 | 537.0 | 28.8 | 7.1 |
| 2022-09-27 07:00 | 26.7 | 45.1 | 4.0 | 490.5 | 25.1 | 8.9 |
| 2022-09-27 06:00 | 10.8 | 64.1 | 3.9 | 470.0 | 23.1 | 10.9 |
| 2022-09-27 05:00 | 7.3 | 76.3 | 4.0 | 452.7 | 23.0 | 12.0 |
| 2022-09-27 04:00 | 6.8 | 78.5 | 4.0 | 424.6 | 19.1 | 13.0 |
| 2022-09-27 03:00 | 11.6 | 72.1 | 4.1 | 455.4 | 23.8 | 11.1 |
| 2022-09-27 02:00 | 14.6 | 66.1 | 4.0 | 459.9 | 25.0 | 12.9 |
| 2022-09-27 01:00 | 7.9 | 83.5 | 4.0 | 452.9 | 28.9 | 14.0 |
| 2022-09-27 00:00 | 9.5 | 86.7 | 3.8 | 463.8 | 23.2 | 15.0 |
| 2022-09-26 23:00 | 9.7 | 94.4 | 3.6 | 455.8 | 28.8 | 7.3 |
| 2022-09-26 22:00 | 10.1 | 99.8 | 3.9 | 451.2 | 31.9 | 14.7 |
| 2022-09-26 21:00 | 27.2 | 95.8 | 4.5 | 522.4 | 43.6 | 19.8 |
| 2022-09-26 20:00 | 38.6 | 97.7 | 4.6 | 600.3 | 51.7 | 22.9 |
| 2022-09-26 19:00 | 72.6 | 82.1 | 6.3 | 657.9 | 44.3 | 19.1 |
| 2022-09-26 18:00 | 54.3 | 105.1 | 6.3 | 570.8 | 45.0 | 21.9 |
| 2022-09-26 17:00 | 40.7 | 160.5 | 6.2 | 554.4 | 82.7 | 39.4 |
| 2022-09-26 16:00 | 54.7 | 231.6 | 6.3 | 669.5 | 58.9 | 33.2 |
| 2022-09-26 15:00 | 36.1 | 205.3 | 5.2 | 626.3 | 48.3 | 29.1 |
| 2022-09-26 14:00 | 30.0 | 169.4 | 5.2 | 590.7 | 54.8 | 27.1 |
| 2022-09-26 13:00 | 33.4 | 163.2 | 5.6 | 581.7 | 56.9 | 24.1 |
| 2022-09-26 12:00 | 29.2 | 148.7 | 5.5 | 597.1 | 56.0 | 28.8 |
| 2022-09-26 11:00 | 39.3 | 122.2 | 5.6 | 580.4 | 50.2 | 20.3 |
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.