Kwai Chung
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-09-22 18:00 | 19.3 | 38.6 | 1.8 | - | 5.5 | 4.5 |
| 2021-09-22 17:00 | 20.8 | 39.3 | 1.9 | - | 5.2 | 4.0 |
| 2021-09-22 16:00 | 17.9 | 44.1 | 1.6 | - | 8.6 | 7.3 |
| 2021-09-22 15:00 | 26.5 | 39.9 | 1.9 | - | 7.3 | 6.0 |
| 2021-09-22 14:00 | 18.8 | 51.2 | 2.5 | - | 7.7 | 6.5 |
| 2021-09-22 13:00 | 35.2 | 31.4 | 5.0 | - | 9.5 | 7.0 |
| 2021-09-22 12:00 | 40.3 | 18.0 | 5.5 | - | 8.2 | 6.4 |
| 2021-09-22 11:00 | 20.9 | 28.5 | 2.3 | - | 4.9 | 4.2 |
| 2021-09-22 10:00 | 19.0 | 24.8 | 2.8 | - | 7.3 | 5.8 |
| 2021-09-22 09:00 | 24.8 | 14.9 | 3.0 | - | 7.6 | 4.9 |
| 2021-09-22 08:00 | 27.5 | 7.8 | 2.8 | - | 9.5 | 6.1 |
| 2021-09-22 07:00 | 25.7 | 6.1 | 2.0 | - | 11.5 | 5.5 |
| 2021-09-22 06:00 | 25.9 | 6.4 | 2.4 | - | 11.0 | 5.7 |
| 2021-09-22 05:00 | 24.4 | 5.7 | 2.8 | - | 8.4 | 4.2 |
| 2021-09-22 04:00 | - | - | - | - | 9.0 | 4.4 |
| 2021-09-22 03:00 | 29.4 | 4.1 | 2.9 | - | 12.1 | 7.2 |
| 2021-09-22 02:00 | 41.9 | 2.5 | 3.4 | - | 18.7 | 12.7 |
| 2021-09-22 01:00 | 58.0 | - | 4.7 | - | 22.6 | 14.5 |
| 2021-09-22 00:00 | 59.0 | 1.8 | 5.0 | - | 22.2 | 15.3 |
| 2021-09-21 23:00 | 61.4 | 1.9 | 4.9 | - | 21.0 | 13.6 |
| 2021-09-21 22:00 | 62.6 | 2.0 | 4.6 | - | 25.8 | 18.0 |
| 2021-09-21 21:00 | 66.7 | 2.2 | 5.5 | - | 25.3 | 17.6 |
| 2021-09-21 20:00 | 71.1 | 2.1 | 6.7 | - | 20.3 | 13.6 |
| 2021-09-21 19:00 | 71.5 | 1.9 | 10.2 | - | 17.9 | 12.9 |
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.
