Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2018-10-20 16:00 | 35.9 | 103.1 | 2.2 | - | 46.8 | 24.8 |
| 2018-10-20 15:00 | 37.4 | 101.2 | 2.3 | - | 46.9 | 25.7 |
| 2018-10-20 14:00 | 39.6 | 97.2 | 2.1 | - | 41.1 | 23.6 |
| 2018-10-20 13:00 | 39.3 | 97.2 | 2.9 | - | 45.5 | 26.4 |
| 2018-10-20 12:00 | 42.5 | 85.0 | 3.1 | - | 43.2 | 25.1 |
| 2018-10-20 11:00 | 45.5 | 72.8 | 6.3 | - | 36.5 | 23.3 |
| 2018-10-20 10:00 | 31.1 | 77.6 | 3.4 | - | 30.5 | 20.0 |
| 2018-10-20 09:00 | 26.7 | 76.2 | 3.7 | - | 27.9 | 18.8 |
| 2018-10-20 08:00 | 19.3 | 82.9 | 3.1 | - | 28.6 | 17.0 |
| 2018-10-20 07:00 | 13.1 | 89.5 | 3.0 | - | 31.9 | 19.3 |
| 2018-10-20 06:00 | 13.1 | 89.8 | 3.2 | - | 35.4 | 20.7 |
| 2018-10-20 05:00 | 13.1 | 92.0 | 3.2 | - | 34.0 | 20.2 |
| 2018-10-20 04:00 | 12.8 | 95.2 | 2.7 | - | 33.3 | 19.1 |
| 2018-10-20 03:00 | 11.8 | 99.4 | 2.7 | - | 37.6 | 24.6 |
| 2018-10-20 02:00 | 14.8 | 101.3 | 2.8 | - | 36.2 | 23.7 |
| 2018-10-20 01:00 | 17.2 | 103.6 | 3.0 | - | 31.8 | 20.0 |
| 2018-10-20 00:00 | 19.4 | 105.6 | 3.2 | - | 30.9 | 18.4 |
| 2018-10-19 23:00 | 25.5 | 98.4 | 3.9 | - | 35.4 | 22.2 |
| 2018-10-19 22:00 | 22.4 | 100.4 | 2.9 | - | 33.3 | 20.2 |
| 2018-10-19 21:00 | 32.0 | 88.4 | 3.5 | - | 31.1 | 19.0 |
| 2018-10-19 20:00 | 39.0 | 86.7 | 3.5 | - | 36.4 | 20.9 |
| 2018-10-19 19:00 | 43.3 | 92.7 | 2.8 | - | 38.3 | 21.5 |
| 2018-10-19 18:00 | 44.3 | 93.3 | 3.8 | - | 37.4 | 22.5 |
| 2018-10-19 17:00 | 40.3 | 94.7 | 3.3 | - | 38.7 | 22.6 |
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.
