Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2018-12-15 14:00 | 40.2 | 65.5 | 2.6 | - | 29.3 | 21.7 |
| 2018-12-15 13:00 | 36.7 | 59.1 | 3.1 | - | 36.2 | 25.2 |
| 2018-12-15 12:00 | 61.4 | 22.2 | 6.8 | - | 47.6 | 30.5 |
| 2018-12-15 11:00 | 61.6 | 11.2 | 7.2 | - | 46.4 | 30.3 |
| 2018-12-15 10:00 | 56.4 | 13.0 | 4.5 | - | 42.5 | 25.8 |
| 2018-12-15 09:00 | 53.8 | 8.9 | 4.2 | - | 43.7 | 27.9 |
| 2018-12-15 08:00 | 46.8 | 13.9 | 3.3 | - | 33.9 | 21.7 |
| 2018-12-15 07:00 | 31.9 | 29.4 | 3.2 | - | 38.4 | 22.4 |
| 2018-12-15 06:00 | 26.1 | 35.8 | 2.4 | - | 38.3 | 20.8 |
| 2018-12-15 05:00 | 26.0 | 34.9 | 2.3 | - | 39.6 | 21.6 |
| 2018-12-15 04:00 | 23.5 | 40.8 | 2.6 | - | 42.3 | 24.7 |
| 2018-12-15 03:00 | 30.9 | 38.7 | 3.6 | - | 45.3 | 29.2 |
| 2018-12-15 02:00 | 78.4 | 2.5 | 6.0 | - | 45.3 | 28.5 |
| 2018-12-15 01:00 | 80.3 | 1.4 | 5.7 | - | 47.3 | 31.1 |
| 2018-12-15 00:00 | 81.5 | 2.0 | 3.1 | - | 51.2 | 32.3 |
| 2018-12-14 23:00 | 82.3 | 3.5 | 2.9 | - | 57.9 | 34.3 |
| 2018-12-14 22:00 | 87.4 | 4.3 | 3.2 | - | 66.4 | 38.2 |
| 2018-12-14 21:00 | 89.2 | 5.3 | 2.8 | - | 57.7 | 33.8 |
| 2018-12-14 20:00 | 88.9 | 5.0 | 2.7 | - | 45.8 | 28.0 |
| 2018-12-14 19:00 | 80.6 | 6.2 | 2.2 | - | 37.2 | 24.5 |
| 2018-12-14 18:00 | 83.6 | 4.4 | 3.1 | - | 27.2 | 19.0 |
| 2018-12-14 17:00 | 66.3 | 19.0 | 4.3 | - | 25.1 | 17.9 |
| 2018-12-14 16:00 | 61.7 | 21.1 | 16.9 | - | 33.8 | 25.4 |
| 2018-12-14 15:00 | 61.0 | 15.4 | 2.3 | - | 37.1 | 25.3 |
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.
(5) Owing to equipment maintenance, monitoring of Nitrogen Dioxide at Tuen Mun general air quality monitoring station is temporarily suspended. We apologize for any inconvenience caused.
