Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-06-28 04:00 | 5.1 | 49.6 | 3.1 | - | 2.9 | - |
| 2022-06-28 03:00 | 9.1 | 44.5 | 4.1 | - | 2.8 | - |
| 2022-06-28 02:00 | - | 26.7 | - | - | 3.1 | - |
| 2022-06-28 01:00 | 7.4 | 39.5 | 3.0 | - | 3.0 | 2.9 |
| 2022-06-28 00:00 | 12.1 | 41.8 | 3.5 | - | 3.8 | 3.6 |
| 2022-06-27 23:00 | 22.5 | 27.4 | 4.3 | - | 5.5 | 5.0 |
| 2022-06-27 22:00 | 22.3 | 24.1 | 3.6 | - | 4.8 | 4.7 |
| 2022-06-27 21:00 | 35.3 | 14.3 | 4.6 | - | 6.4 | 5.5 |
| 2022-06-27 20:00 | 27.1 | 20.2 | 3.8 | - | 3.9 | 3.3 |
| 2022-06-27 19:00 | 21.9 | 29.0 | 3.6 | - | 6.0 | 5.1 |
| 2022-06-27 18:00 | 18.6 | 34.5 | 3.4 | - | 5.7 | 4.3 |
| 2022-06-27 17:00 | 20.0 | 35.2 | 4.2 | - | 5.5 | 4.4 |
| 2022-06-27 16:00 | 15.4 | 37.9 | 4.0 | - | 5.1 | 4.0 |
| 2022-06-27 15:00 | 13.4 | 46.6 | 3.3 | - | 7.3 | 4.7 |
| 2022-06-27 14:00 | 24.2 | 40.2 | 4.0 | - | 5.2 | 4.0 |
| 2022-06-27 13:00 | 20.8 | 41.7 | 4.1 | - | 3.4 | 2.0 |
| 2022-06-27 12:00 | 24.5 | 34.1 | 6.5 | - | 3.0 | 1.5 |
| 2022-06-27 11:00 | 11.3 | 40.8 | 3.1 | - | 4.8 | 3.4 |
| 2022-06-27 10:00 | 12.6 | 38.5 | 3.6 | - | 6.0 | 4.2 |
| 2022-06-27 09:00 | 18.7 | 29.7 | 3.5 | - | 5.4 | 4.2 |
| 2022-06-27 08:00 | 21.2 | 23.5 | 3.4 | - | 2.9 | 2.1 |
| 2022-06-27 07:00 | 8.5 | 33.2 | 3.1 | - | 1.8 | 1.4 |
| 2022-06-27 06:00 | 14.2 | 28.3 | 3.9 | - | 2.8 | 2.4 |
| 2022-06-27 05:00 | 13.0 | 28.8 | 3.9 | - | 2.4 | 2.2 |
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.