Past 24 Hours Pollutant Concentration Summary
Tuen Mun
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-02-05 19:00 | 78.9 | 2.1 | 5.2 | 532.7 | 33.8 | 22.8 |
| 2023-02-05 18:00 | 66.9 | 10.6 | 4.6 | 509.7 | 49.5 | 35.6 |
| 2023-02-05 17:00 | 62.5 | 16.0 | 4.5 | 509.1 | 41.3 | 25.4 |
| 2023-02-05 16:00 | 41.3 | 34.7 | 3.1 | 489.7 | 45.8 | 28.9 |
| 2023-02-05 15:00 | 50.4 | 26.4 | 3.4 | 487.2 | 39.2 | 24.2 |
| 2023-02-05 14:00 | 54.4 | 21.7 | 3.8 | 532.5 | 35.1 | 22.1 |
| 2023-02-05 13:00 | 48.4 | 25.8 | 3.9 | 462.3 | 35.0 | 25.9 |
| 2023-02-05 12:00 | 48.7 | 22.4 | 4.6 | 460.1 | 36.0 | 26.0 |
| 2023-02-05 11:00 | 43.9 | 24.3 | 3.9 | 447.3 | 43.7 | 27.9 |
| 2023-02-05 10:00 | 51.7 | 16.8 | 4.0 | 446.8 | 46.9 | 25.1 |
| 2023-02-05 09:00 | 58.8 | 9.2 | 4.0 | 440.5 | 42.2 | 28.9 |
| 2023-02-05 08:00 | 40.2 | 22.4 | 2.6 | 463.4 | 38.1 | 26.1 |
| 2023-02-05 07:00 | 23.8 | 38.6 | 2.3 | 453.1 | 36.1 | 33.7 |
| 2023-02-05 06:00 | 19.9 | 44.7 | 2.4 | 493.9 | 41.8 | 34.0 |
| 2023-02-05 05:00 | 18.4 | 48.4 | 2.4 | 430.8 | 47.8 | 31.1 |
| 2023-02-05 04:00 | 18.1 | 48.8 | 2.3 | 424.5 | 44.1 | 34.9 |
| 2023-02-05 03:00 | 21.2 | 50.2 | 2.3 | 428.2 | 51.7 | 32.1 |
| 2023-02-05 02:00 | 19.1 | 57.6 | 2.3 | 421.4 | 50.1 | 30.1 |
| 2023-02-05 01:00 | 21.7 | 59.7 | 2.5 | 399.2 | 44.2 | 27.1 |
| 2023-02-05 00:00 | 43.9 | 41.7 | 3.3 | 429.0 | 49.8 | 28.0 |
| 2023-02-04 23:00 | 60.7 | 29.8 | 4.1 | 436.3 | 47.1 | 27.0 |
| 2023-02-04 22:00 | 69.8 | 21.2 | 3.4 | 480.5 | 47.0 | 29.9 |
| 2023-02-04 21:00 | 88.4 | 5.9 | 3.7 | 494.0 | 40.2 | 24.2 |
| 2023-02-04 20:00 | 95.8 | 3.1 | 3.0 | 480.4 | 41.0 | 22.1 |
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.