Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2020-07-11 23:00 | 9.9 | 30.4 | 3.3 | - | 9.7 | 5.3 |
| 2020-07-11 22:00 | 13.0 | 23.6 | 3.5 | - | 12.7 | 7.7 |
| 2020-07-11 21:00 | 18.2 | 19.9 | 3.7 | - | 15.1 | 9.3 |
| 2020-07-11 20:00 | 19.3 | 23.6 | 3.9 | - | 12.1 | 6.5 |
| 2020-07-11 19:00 | 12.1 | 32.7 | 3.5 | - | 10.2 | 4.7 |
| 2020-07-11 18:00 | 8.7 | 37.3 | 3.4 | - | 10.0 | 5.0 |
| 2020-07-11 17:00 | 9.7 | 37.9 | 3.7 | - | 12.3 | 7.2 |
| 2020-07-11 16:00 | 5.6 | 39.8 | 3.1 | - | 11.9 | 6.9 |
| 2020-07-11 15:00 | 7.0 | 41.5 | 3.7 | - | 14.3 | 7.8 |
| 2020-07-11 14:00 | 13.4 | 41.3 | 4.4 | - | 15.0 | 8.6 |
| 2020-07-11 13:00 | 19.8 | 35.3 | 5.2 | - | 15.3 | 9.1 |
| 2020-07-11 12:00 | 16.7 | 36.5 | 4.0 | - | 12.7 | 7.2 |
| 2020-07-11 11:00 | 7.5 | 43.3 | 3.2 | - | 11.8 | 6.0 |
| 2020-07-11 10:00 | 12.6 | 34.8 | 3.3 | - | 13.9 | 7.9 |
| 2020-07-11 09:00 | 11.5 | 30.0 | 3.2 | - | 14.2 | 8.4 |
| 2020-07-11 08:00 | 13.3 | 22.7 | 3.4 | - | 12.8 | 7.2 |
| 2020-07-11 07:00 | 10.0 | 24.2 | 3.2 | - | 11.7 | 6.0 |
| 2020-07-11 06:00 | 12.6 | 23.8 | 3.4 | - | 11.5 | 6.0 |
| 2020-07-11 05:00 | 8.2 | 26.5 | 3.0 | - | 10.9 | 5.9 |
| 2020-07-11 04:00 | 6.2 | 27.9 | 3.1 | - | 10.3 | 4.7 |
| 2020-07-11 03:00 | 5.9 | 28.7 | 3.1 | - | 11.2 | 5.6 |
| 2020-07-11 02:00 | 7.8 | 27.5 | 3.1 | - | 14.0 | 8.5 |
| 2020-07-11 01:00 | 11.7 | 23.0 | 3.4 | - | 12.2 | 6.4 |
| 2020-07-11 00:00 | 13.7 | 21.8 | 3.2 | - | 13.3 | 7.1 |
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.
