Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-01-27 06:00 | 12.8 | 98.2 | - | - | 19.1 | 15.6 |
| 2022-01-27 05:00 | 11.5 | 96.5 | 1.9 | - | 22.1 | 16.9 |
| 2022-01-27 04:00 | - | 90.7 | 1.9 | - | 23.6 | 16.9 |
| 2022-01-27 03:00 | 14.7 | 91.6 | 2.1 | - | 24.4 | 16.6 |
| 2022-01-27 02:00 | - | 92.7 | - | - | 26.4 | 16.8 |
| 2022-01-27 01:00 | 25.6 | 91.9 | 2.5 | - | 26.4 | 18.5 |
| 2022-01-27 00:00 | 28.5 | - | 2.3 | - | 30.7 | 21.9 |
| 2022-01-26 23:00 | 33.1 | 95.9 | 1.6 | - | 29.8 | 21.3 |
| 2022-01-26 22:00 | 32.6 | 95.3 | 1.8 | - | 34.6 | 26.4 |
| 2022-01-26 21:00 | 41.5 | 84.4 | 2.2 | - | 35.8 | 26.4 |
| 2022-01-26 20:00 | 73.1 | 53.3 | 2.6 | - | 36.5 | 25.5 |
| 2022-01-26 19:00 | 113.9 | 17.5 | 3.1 | - | 31.6 | 22.0 |
| 2022-01-26 18:00 | 79.3 | 40.3 | 2.5 | - | 23.0 | 16.9 |
| 2022-01-26 17:00 | 45.8 | 69.7 | 2.3 | - | 24.0 | 17.0 |
| 2022-01-26 16:00 | 45.7 | 74.9 | 2.9 | - | 28.9 | 20.3 |
| 2022-01-26 15:00 | 41.0 | 80.4 | 2.8 | - | 29.3 | 21.1 |
| 2022-01-26 14:00 | 39.6 | 77.9 | 2.6 | - | 33.8 | 25.1 |
| 2022-01-26 13:00 | 36.3 | 74.2 | 1.9 | - | 35.9 | 26.3 |
| 2022-01-26 12:00 | 44.6 | 53.2 | 1.7 | - | 33.6 | 24.1 |
| 2022-01-26 11:00 | 43.3 | 48.6 | 2.5 | - | 34.5 | 24.7 |
| 2022-01-26 10:00 | 41.9 | 45.9 | 2.9 | - | 34.0 | 25.0 |
| 2022-01-26 09:00 | 43.8 | 46.1 | 2.5 | - | 31.2 | 22.4 |
| 2022-01-26 08:00 | 31.9 | 59.3 | 2.4 | - | 32.0 | 21.6 |
| 2022-01-26 07:00 | 20.2 | 75.4 | 2.4 | - | 35.7 | 21.7 |
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.