Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2019-04-19 14:00 | 25.9 | 50.0 | 4.7 | - | 15.4 | 11.0 |
| 2019-04-19 13:00 | 10.2 | 44.1 | 4.4 | - | 13.9 | 9.1 |
| 2019-04-19 12:00 | 27.9 | 27.7 | 4.8 | - | 20.2 | 13.8 |
| 2019-04-19 11:00 | 45.4 | 15.1 | 5.2 | - | 24.4 | 17.2 |
| 2019-04-19 10:00 | 52.4 | 12.0 | 5.1 | - | 23.1 | 16.2 |
| 2019-04-19 09:00 | 51.3 | 14.4 | 4.8 | - | 22.9 | 15.1 |
| 2019-04-19 08:00 | 58.0 | 11.5 | 4.9 | - | 18.6 | 12.8 |
| 2019-04-19 07:00 | 24.0 | 35.3 | 4.1 | - | 17.0 | 11.2 |
| 2019-04-19 06:00 | 19.0 | 55.2 | 4.2 | - | 19.4 | 13.1 |
| 2019-04-19 05:00 | 20.6 | 55.0 | 4.4 | - | 17.6 | 11.1 |
| 2019-04-19 04:00 | 33.3 | 41.2 | 4.1 | - | 17.0 | 12.1 |
| 2019-04-19 03:00 | 41.4 | 48.4 | 3.9 | - | 15.5 | 12.6 |
| 2019-04-19 02:00 | 39.5 | 56.0 | 3.6 | - | 13.0 | 10.4 |
| 2019-04-19 01:00 | 75.6 | 28.9 | 3.7 | - | 18.1 | 11.5 |
| 2019-04-19 00:00 | 95.1 | 6.4 | 3.9 | - | 14.6 | 9.8 |
| 2019-04-18 23:00 | 26.2 | 86.2 | 3.1 | - | 10.0 | 9.3 |
| 2019-04-18 22:00 | 39.7 | 62.9 | 2.9 | - | 12.9 | 9.6 |
| 2019-04-18 21:00 | 58.6 | 45.8 | 3.1 | - | 22.9 | 17.3 |
| 2019-04-18 20:00 | 74.6 | 33.9 | 3.0 | - | 26.6 | 21.1 |
| 2019-04-18 19:00 | 61.9 | 49.0 | 2.9 | - | 23.8 | 17.9 |
| 2019-04-18 18:00 | 56.8 | 59.4 | 2.9 | - | 23.4 | 17.2 |
| 2019-04-18 17:00 | 55.7 | 64.2 | 3.2 | - | 26.5 | 19.6 |
| 2019-04-18 16:00 | 68.1 | 64.5 | 3.8 | - | 39.2 | 30.7 |
| 2019-04-18 15:00 | 63.3 | 76.2 | 4.2 | - | 40.6 | 32.3 |
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.
