Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2020-04-01 03:00 | 41.0 | 0.5 | 5.2 | - | 16.9 | 12.0 |
| 2020-04-01 02:00 | 44.7 | 0.3 | 8.6 | - | 18.3 | 12.7 |
| 2020-04-01 01:00 | 42.4 | 0.4 | 5.5 | - | 17.7 | 13.6 |
| 2020-04-01 00:00 | 41.8 | 0.6 | 4.7 | - | 16.8 | 14.2 |
| 2020-03-31 23:00 | 45.8 | 0.7 | 6.4 | - | 16.8 | 14.2 |
| 2020-03-31 22:00 | 47.0 | 0.5 | 7.0 | - | 20.9 | 18.2 |
| 2020-03-31 21:00 | 48.0 | 0.5 | 9.4 | - | 17.2 | 15.5 |
| 2020-03-31 20:00 | 53.9 | 0.4 | 7.4 | - | 14.9 | 14.6 |
| 2020-03-31 19:00 | 60.6 | 0.4 | 7.1 | - | 13.8 | 13.5 |
| 2020-03-31 18:00 | 69.0 | 0.6 | 5.7 | - | 14.0 | 11.1 |
| 2020-03-31 17:00 | 63.5 | 11.7 | 2.3 | - | 17.9 | 11.3 |
| 2020-03-31 16:00 | 63.9 | 9.2 | 2.4 | - | 23.3 | 13.7 |
| 2020-03-31 15:00 | 53.8 | 15.0 | 2.5 | - | 20.4 | 12.4 |
| 2020-03-31 14:00 | 43.5 | 21.7 | 2.3 | - | 14.8 | 10.0 |
| 2020-03-31 13:00 | 43.0 | 22.3 | 2.2 | - | 10.7 | 7.8 |
| 2020-03-31 12:00 | 39.3 | 24.1 | 1.9 | - | 9.6 | 7.3 |
| 2020-03-31 11:00 | 46.8 | 18.2 | 1.8 | - | 7.4 | 6.2 |
| 2020-03-31 10:00 | 44.6 | 18.1 | 1.8 | - | 4.2 | 3.7 |
| 2020-03-31 09:00 | 41.9 | 19.0 | 1.6 | - | 7.5 | 5.2 |
| 2020-03-31 08:00 | 27.1 | 26.8 | 1.6 | - | 10.8 | 9.7 |
| 2020-03-31 07:00 | 18.2 | 30.7 | 1.6 | - | 18.3 | 14.9 |
| 2020-03-31 06:00 | 15.4 | 27.0 | 1.6 | - | 19.0 | 15.7 |
| 2020-03-31 05:00 | 14.9 | 26.1 | 1.7 | - | 14.7 | 13.1 |
| 2020-03-31 04:00 | 17.3 | 25.3 | 1.7 | - | 21.9 | 19.2 |
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.
