Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-17 06:00 | 6.0 | 43.0 | 4.7 | - | 11.8 | 8.9 |
| 2024-04-17 05:00 | 5.5 | 45.4 | 4.8 | - | 12.8 | 9.7 |
| 2024-04-17 04:00 | 4.7 | 47.2 | 4.8 | - | 13.7 | 11.1 |
| 2024-04-17 03:00 | 6.7 | 44.1 | 4.7 | - | 14.1 | 11.3 |
| 2024-04-17 02:00 | 8.5 | 43.5 | 4.7 | - | 14.6 | 11.9 |
| 2024-04-17 01:00 | 7.2 | 44.1 | 4.7 | - | 13.4 | 10.5 |
| 2024-04-17 00:00 | 9.2 | 43.5 | 4.5 | - | 16.0 | 13.2 |
| 2024-04-16 23:00 | 8.2 | 45.0 | 4.4 | - | 16.2 | 13.0 |
| 2024-04-16 22:00 | 8.4 | 47.6 | 4.4 | - | 15.0 | 11.8 |
| 2024-04-16 21:00 | 8.4 | 48.4 | 4.3 | - | 14.7 | 11.4 |
| 2024-04-16 20:00 | 11.7 | 44.9 | 4.6 | - | 15.5 | 11.9 |
| 2024-04-16 19:00 | 12.4 | 43.6 | 4.7 | - | 15.8 | 12.1 |
| 2024-04-16 18:00 | 9.8 | 47.6 | 4.5 | - | 16.0 | 11.6 |
| 2024-04-16 17:00 | 10.3 | 51.6 | 4.5 | - | 15.8 | 11.4 |
| 2024-04-16 16:00 | 11.7 | 51.6 | 4.5 | - | 16.8 | 10.3 |
| 2024-04-16 15:00 | 16.4 | 54.3 | 4.6 | - | 15.8 | 9.1 |
| 2024-04-16 14:00 | 13.0 | 55.2 | 4.7 | - | 15.2 | 11.3 |
| 2024-04-16 13:00 | 11.5 | 57.9 | 4.8 | - | - | - |
| 2024-04-16 12:00 | 8.9 | 56.1 | 5.6 | - | - | - |
| 2024-04-16 11:00 | 10.4 | 52.2 | 4.9 | - | - | - |
| 2024-04-16 10:00 | 16.1 | 43.1 | 4.4 | - | 13.4 | 10.0 |
| 2024-04-16 09:00 | 21.9 | 34.5 | 4.7 | - | 12.7 | 10.2 |
| 2024-04-16 08:00 | 17.3 | 36.5 | 4.5 | - | 15.4 | 13.3 |
| 2024-04-16 07:00 | 27.4 | 22.5 | 5.0 | - | 20.5 | 17.4 |
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.