Past 24 Hours Pollutant Concentration Summary
Kwai Chung
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-06-21 04:00 | 61.3 | 5.4 | 12.8 | - | 38.1 | 26.0 |
| 2021-06-21 03:00 | 57.6 | 7.7 | 12.3 | - | 33.9 | 22.0 |
| 2021-06-21 02:00 | 54.8 | 8.4 | 12.3 | - | 37.5 | 25.1 |
| 2021-06-21 01:00 | 58.8 | 5.4 | 12.3 | - | 34.1 | 21.8 |
| 2021-06-21 00:00 | 67.3 | 5.7 | 12.5 | - | 32.5 | 19.9 |
| 2021-06-20 23:00 | 75.9 | 5.5 | 12.2 | - | 29.0 | 16.7 |
| 2021-06-20 22:00 | 60.0 | 10.7 | 10.5 | - | 28.6 | 16.9 |
| 2021-06-20 21:00 | 55.1 | 11.6 | 11.1 | - | 29.0 | 17.4 |
| 2021-06-20 20:00 | 65.8 | 6.7 | 12.4 | - | 27.8 | 16.8 |
| 2021-06-20 19:00 | 65.8 | 7.3 | 11.7 | - | 23.8 | 13.4 |
| 2021-06-20 18:00 | 49.9 | 21.1 | 9.8 | - | 22.1 | 11.5 |
| 2021-06-20 17:00 | 52.1 | 25.2 | 9.1 | - | 25.2 | 14.4 |
| 2021-06-20 16:00 | 53.9 | 30.5 | 8.0 | - | 26.2 | 14.7 |
| 2021-06-20 15:00 | 42.4 | 43.5 | 7.2 | - | 29.8 | 17.5 |
| 2021-06-20 14:00 | 34.5 | 53.9 | 7.6 | - | 30.1 | 18.9 |
| 2021-06-20 13:00 | 38.5 | 46.5 | 7.6 | - | 23.2 | 12.9 |
| 2021-06-20 12:00 | 39.7 | 44.5 | 8.5 | - | 24.0 | 14.5 |
| 2021-06-20 11:00 | 45.6 | 37.0 | 8.7 | - | 23.7 | 13.3 |
| 2021-06-20 10:00 | 51.9 | 28.6 | 12.1 | - | 25.8 | 15.8 |
| 2021-06-20 09:00 | 63.5 | 13.7 | 12.1 | - | 24.7 | 14.7 |
| 2021-06-20 08:00 | 53.2 | 16.6 | 10.2 | - | 23.0 | 13.4 |
| 2021-06-20 07:00 | 54.0 | 16.2 | 10.7 | - | 22.0 | 11.9 |
| 2021-06-20 06:00 | 61.7 | 11.2 | 11.6 | - | 22.8 | 12.8 |
| 2021-06-20 05:00 | 54.3 | 13.2 | 11.6 | - | 20.1 | 10.0 |
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.