Past 24 Hours Pollutant Concentration Summary
Sham Shui Po
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-01-23 23:00 | 37.2 | 4.4 | 7.3 | - | 55.2 | 30.2 |
| 2021-01-23 22:00 | 34.3 | 4.5 | 10.5 | - | 52.1 | 32.8 |
| 2021-01-23 21:00 | 59.3 | 4.6 | 14.8 | - | 47.2 | 32.0 |
| 2021-01-23 20:00 | 54.3 | 14.4 | 12.7 | - | 49.0 | 30.3 |
| 2021-01-23 19:00 | 64.3 | 8.7 | 13.7 | - | 57.2 | 32.1 |
| 2021-01-23 18:00 | 81.5 | 19.2 | 13.0 | - | 65.8 | 38.3 |
| 2021-01-23 17:00 | 75.7 | 57.3 | 5.3 | - | 67.4 | 42.3 |
| 2021-01-23 16:00 | 75.6 | 69.8 | 5.0 | - | 44.4 | 25.1 |
| 2021-01-23 15:00 | 76.5 | 74.5 | 3.4 | - | 13.0 | - |
| 2021-01-23 14:00 | 74.8 | 50.0 | 2.7 | - | 2.8 | - |
| 2021-01-23 13:00 | 50.8 | 66.2 | 0.7 | - | 9.9 | 6.5 |
| 2021-01-23 12:00 | 40.6 | 63.7 | 0.7 | - | 25.1 | 18.4 |
| 2021-01-23 11:00 | 44.5 | 46.2 | 1.3 | - | 42.5 | 30.7 |
| 2021-01-23 10:00 | 50.5 | 27.9 | 1.8 | - | 55.4 | 34.1 |
| 2021-01-23 09:00 | 59.8 | 15.3 | 2.5 | - | 71.7 | 39.9 |
| 2021-01-23 08:00 | 79.2 | 8.1 | 4.9 | - | 82.8 | 44.5 |
| 2021-01-23 07:00 | 103.4 | 4.6 | 7.3 | - | 72.5 | 43.7 |
| 2021-01-23 06:00 | 104.7 | 4.4 | 5.2 | - | 72.3 | 44.2 |
| 2021-01-23 05:00 | 97.4 | 4.0 | 4.1 | - | 79.5 | 46.4 |
| 2021-01-23 04:00 | 102.5 | 4.1 | 5.3 | - | 80.1 | 50.7 |
| 2021-01-23 03:00 | 103.7 | 4.0 | 6.3 | - | 79.2 | 50.6 |
| 2021-01-23 02:00 | 111.4 | 4.2 | 7.1 | - | 80.0 | 47.5 |
| 2021-01-23 01:00 | 116.9 | 4.1 | 7.0 | - | 76.6 | 45.3 |
| 2021-01-23 00:00 | 115.1 | 4.0 | 9.0 | - | 71.9 | 38.4 |
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.