Past 24 Hours Pollutant Concentration Summary
Sham Shui Po
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-12-04 08:00 | 52.9 | 49.5 | 5.3 | - | 25.3 | 10.9 |
| 2021-12-04 07:00 | 35.1 | 62.8 | 5.5 | - | 20.1 | 8.1 |
| 2021-12-04 06:00 | 18.7 | 76.7 | 6.5 | - | 21.3 | 6.7 |
| 2021-12-04 05:00 | 15.6 | 80.8 | 6.7 | - | 25.4 | 10.0 |
| 2021-12-04 04:00 | - | - | - | - | 24.4 | 10.8 |
| 2021-12-04 03:00 | 18.2 | 77.9 | 7.0 | - | 26.3 | 11.7 |
| 2021-12-04 02:00 | 27.9 | 68.0 | 7.8 | - | 31.7 | 11.8 |
| 2021-12-04 01:00 | 45.6 | 53.2 | 7.5 | - | 38.1 | 12.7 |
| 2021-12-04 00:00 | 53.8 | 47.1 | 8.1 | - | 41.1 | 14.7 |
| 2021-12-03 23:00 | 55.4 | 50.2 | 5.7 | - | 37.2 | 13.1 |
| 2021-12-03 22:00 | 63.7 | 46.9 | 5.1 | - | 30.5 | 9.4 |
| 2021-12-03 21:00 | 71.2 | 38.7 | 4.8 | - | 31.7 | 12.6 |
| 2021-12-03 20:00 | 79.2 | 39.8 | 4.7 | - | 36.0 | 15.7 |
| 2021-12-03 19:00 | 91.9 | 31.2 | 4.4 | - | 40.8 | 14.5 |
| 2021-12-03 18:00 | 81.0 | 42.4 | 4.6 | - | 39.9 | 10.6 |
| 2021-12-03 17:00 | 68.8 | 57.7 | 4.9 | - | 37.3 | 8.3 |
| 2021-12-03 16:00 | 67.0 | 58.5 | 5.6 | - | 37.8 | 13.1 |
| 2021-12-03 15:00 | 71.7 | 65.9 | 5.6 | - | 32.8 | 12.9 |
| 2021-12-03 14:00 | 64.2 | 64.4 | 5.8 | - | 32.2 | 8.8 |
| 2021-12-03 13:00 | 47.6 | 69.9 | 5.1 | - | 29.9 | 5.1 |
| 2021-12-03 12:00 | 44.8 | 66.5 | 5.0 | - | 25.4 | 7.9 |
| 2021-12-03 11:00 | 53.8 | 55.3 | 5.8 | - | 25.1 | 13.3 |
| 2021-12-03 10:00 | 55.9 | 48.9 | 6.1 | - | 26.2 | 12.7 |
| 2021-12-03 09:00 | 64.9 | 36.8 | 5.9 | - | 25.4 | 9.2 |
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.