Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2019-10-19 18:00 | 66.7 | 123.5 | 6.4 | - | 57.9 | 36.6 |
| 2019-10-19 17:00 | 66.3 | 131.5 | 6.7 | - | 56.4 | 35.8 |
| 2019-10-19 16:00 | 42.2 | 150.1 | 6.7 | - | 54.1 | 34.5 |
| 2019-10-19 15:00 | 34.1 | 162.9 | 7.2 | - | 50.7 | 33.1 |
| 2019-10-19 14:00 | 34.0 | 164.1 | 7.8 | - | 50.9 | 34.6 |
| 2019-10-19 13:00 | 32.2 | 159.9 | 8.2 | - | 50.3 | 34.7 |
| 2019-10-19 12:00 | 32.4 | 138.1 | 8.1 | - | 46.3 | 31.4 |
| 2019-10-19 11:00 | 35.0 | 123.8 | 8.0 | - | 49.7 | 32.1 |
| 2019-10-19 10:00 | 59.7 | 79.4 | 9.5 | - | 49.6 | 31.7 |
| 2019-10-19 09:00 | 62.9 | 64.9 | 9.7 | - | 51.3 | 34.4 |
| 2019-10-19 08:00 | 46.2 | 80.2 | 9.9 | - | 50.4 | 34.0 |
| 2019-10-19 07:00 | 30.7 | 90.8 | 9.0 | - | 54.5 | 37.0 |
| 2019-10-19 06:00 | 20.3 | 96.5 | 6.2 | - | 49.7 | 33.4 |
| 2019-10-19 05:00 | 14.0 | 129.8 | 6.2 | - | 44.4 | 29.2 |
| 2019-10-19 04:00 | 11.6 | 146.7 | 6.7 | - | 46.7 | 30.2 |
| 2019-10-19 03:00 | 11.9 | 152.7 | 6.9 | - | 48.9 | 32.4 |
| 2019-10-19 02:00 | 18.8 | 142.4 | 7.1 | - | 51.0 | 35.4 |
| 2019-10-19 01:00 | 61.8 | 106.8 | 7.9 | - | 66.1 | 44.3 |
| 2019-10-19 00:00 | 115.8 | 49.3 | 12.2 | - | 66.5 | 42.8 |
| 2019-10-18 23:00 | 88.2 | 81.6 | 11.2 | - | 63.5 | 40.0 |
| 2019-10-18 22:00 | 62.3 | 122.2 | 9.8 | - | 66.2 | 41.9 |
| 2019-10-18 21:00 | 72.8 | 128.8 | 9.2 | - | 62.8 | 39.7 |
| 2019-10-18 20:00 | 32.7 | 179.8 | 8.7 | - | 59.2 | 40.0 |
| 2019-10-18 19:00 | 49.0 | 172.7 | 8.5 | - | 54.2 | 35.6 |
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.
