Past 24 Hours Pollutant Concentration Summary
Central/Western
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-11-29 16:00 | 84.7 | 78.2 | 5.2 | - | 30.4 | 18.6 |
| 2021-11-29 15:00 | 70.0 | 82.5 | 4.9 | - | 31.0 | 21.6 |
| 2021-11-29 14:00 | 55.3 | 82.5 | 4.9 | - | 24.4 | 15.9 |
| 2021-11-29 13:00 | 39.6 | 90.0 | 4.5 | - | 27.0 | 16.8 |
| 2021-11-29 12:00 | 56.2 | 63.1 | 5.0 | - | 26.7 | 15.3 |
| 2021-11-29 11:00 | 57.0 | 54.7 | 5.2 | - | 26.4 | 16.4 |
| 2021-11-29 10:00 | 49.9 | 56.0 | 5.6 | - | 25.1 | 16.6 |
| 2021-11-29 09:00 | 53.5 | 50.8 | 6.4 | - | 27.6 | 19.2 |
| 2021-11-29 08:00 | 63.8 | 41.2 | 6.6 | - | 28.1 | 20.1 |
| 2021-11-29 07:00 | 33.5 | 68.2 | 6.6 | - | 27.8 | 20.5 |
| 2021-11-29 06:00 | 16.5 | 89.0 | 7.0 | - | 28.7 | 20.3 |
| 2021-11-29 05:00 | 16.5 | 89.6 | 6.9 | - | 30.4 | 20.6 |
| 2021-11-29 04:00 | 21.8 | 83.2 | 6.0 | - | 36.1 | 22.9 |
| 2021-11-29 03:00 | 23.9 | 87.9 | 5.7 | - | 36.2 | 21.4 |
| 2021-11-29 02:00 | 31.4 | 89.5 | 5.0 | - | 35.0 | 18.9 |
| 2021-11-29 01:00 | 26.2 | 104.1 | 4.8 | - | 36.3 | 20.5 |
| 2021-11-29 00:00 | 37.8 | 95.7 | 4.8 | - | 36.1 | 21.4 |
| 2021-11-28 23:00 | 48.6 | 87.8 | 4.8 | - | 33.9 | 19.5 |
| 2021-11-28 22:00 | 39.8 | 101.0 | 4.8 | - | 34.3 | 19.2 |
| 2021-11-28 21:00 | 51.5 | 93.5 | 6.1 | - | 35.7 | 21.5 |
| 2021-11-28 20:00 | 48.6 | 100.0 | 4.6 | - | 34.9 | 21.2 |
| 2021-11-28 19:00 | 37.6 | 122.5 | 4.8 | - | 35.0 | 19.2 |
| 2021-11-28 18:00 | 38.4 | 137.1 | 5.1 | - | 36.7 | 20.8 |
| 2021-11-28 17:00 | 46.5 | 132.7 | 5.2 | - | 33.9 | 21.3 |
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.
(5) Owing to urgent repair and maintenance, the monitoring of Shatin air quality monitoring station have been temporarily suspended until further notice. We apologize for any inconvenience caused.