Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2019-10-17 13:00 | 34.2 | 128.7 | 6.6 | - | - | - |
| 2019-10-17 12:00 | 43.1 | 98.8 | 7.3 | - | - | - |
| 2019-10-17 11:00 | 44.4 | 85.4 | 7.4 | - | 41.6 | 28.6 |
| 2019-10-17 10:00 | 60.7 | 59.4 | 7.5 | - | 40.3 | 25.0 |
| 2019-10-17 09:00 | 57.1 | 58.1 | 7.1 | - | 39.1 | 23.4 |
| 2019-10-17 08:00 | 45.9 | 61.3 | 6.7 | - | 36.2 | 22.5 |
| 2019-10-17 07:00 | 22.6 | 87.0 | 6.3 | - | 34.6 | 21.9 |
| 2019-10-17 06:00 | 11.5 | 96.4 | 5.6 | - | 30.6 | 18.0 |
| 2019-10-17 05:00 | 3.5 | 116.1 | 4.9 | - | 30.0 | 17.6 |
| 2019-10-17 04:00 | 10.2 | 112.9 | 4.9 | - | 31.5 | 18.4 |
| 2019-10-17 03:00 | 9.7 | 119.1 | 5.1 | - | 32.3 | 18.7 |
| 2019-10-17 02:00 | 13.0 | 118.6 | 5.2 | - | 29.4 | 15.6 |
| 2019-10-17 01:00 | 18.9 | 110.9 | 5.2 | - | 31.2 | 17.5 |
| 2019-10-17 00:00 | 24.5 | 104.9 | 5.2 | - | 30.2 | 16.7 |
| 2019-10-16 23:00 | 27.0 | 108.0 | 5.2 | - | 31.4 | 18.6 |
| 2019-10-16 22:00 | 24.4 | 119.8 | 5.2 | - | 31.4 | 18.7 |
| 2019-10-16 21:00 | 28.7 | 124.7 | 5.6 | - | 30.6 | 19.5 |
| 2019-10-16 20:00 | 35.0 | 121.0 | 5.6 | - | 29.6 | 18.5 |
| 2019-10-16 19:00 | 50.2 | 109.6 | 5.6 | - | 32.0 | 18.9 |
| 2019-10-16 18:00 | 48.0 | 118.3 | 5.6 | - | 30.9 | 17.0 |
| 2019-10-16 17:00 | 45.8 | 121.1 | 5.6 | - | 31.5 | 17.3 |
| 2019-10-16 16:00 | 31.8 | 134.6 | 5.5 | - | 31.4 | 17.6 |
| 2019-10-16 15:00 | 28.0 | 133.0 | 5.3 | - | 28.3 | 15.5 |
| 2019-10-16 14:00 | 29.2 | 124.7 | 5.2 | - | 27.5 | 17.2 |
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.
