Past 24 Hours Pollutant Concentration Summary
Southern
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-02-05 19:00 | 19.1 | 60.9 | 3.9 | 302.9 | 8.3 | - |
| 2023-02-05 18:00 | 19.0 | 61.8 | 4.2 | 299.5 | 13.8 | 0.9 |
| 2023-02-05 17:00 | 21.0 | 62.8 | 4.2 | 307.1 | 13.2 | 0.9 |
| 2023-02-05 16:00 | 22.0 | 63.4 | 4.2 | 312.2 | 12.0 | 7.7 |
| 2023-02-05 15:00 | 21.3 | 63.9 | 4.2 | 356.2 | 19.1 | 18.0 |
| 2023-02-05 14:00 | 19.2 | 64.5 | 4.4 | 342.2 | 24.0 | 20.2 |
| 2023-02-05 13:00 | 16.6 | 62.1 | 4.5 | 335.2 | 24.0 | 15.2 |
| 2023-02-05 12:00 | 21.8 | 57.1 | 4.5 | 346.0 | 23.2 | 14.7 |
| 2023-02-05 11:00 | 22.2 | 50.8 | 4.5 | 348.5 | 17.7 | 13.3 |
| 2023-02-05 10:00 | 20.4 | 51.1 | 4.3 | 366.3 | 18.5 | 14.5 |
| 2023-02-05 09:00 | 25.8 | 48.5 | 4.4 | 351.6 | 23.0 | 16.6 |
| 2023-02-05 08:00 | 24.1 | 52.2 | 4.7 | 328.8 | 27.2 | 17.6 |
| 2023-02-05 07:00 | 20.4 | 56.7 | 4.7 | 311.0 | 27.8 | 16.9 |
| 2023-02-05 06:00 | 14.8 | 59.4 | 4.7 | 319.3 | 26.4 | 17.1 |
| 2023-02-05 05:00 | 11.2 | 67.0 | 4.5 | 306.7 | 32.1 | 19.2 |
| 2023-02-05 04:00 | 10.8 | 66.7 | 5.0 | 339.6 | 36.4 | 23.0 |
| 2023-02-05 03:00 | 17.2 | 60.0 | 5.1 | 383.7 | 38.3 | 29.8 |
| 2023-02-05 02:00 | 18.9 | 61.9 | 5.1 | 373.9 | 43.9 | 32.5 |
| 2023-02-05 01:00 | 22.5 | 62.3 | 5.1 | 362.8 | 45.3 | 28.8 |
| 2023-02-05 00:00 | 26.1 | 61.6 | 5.0 | 378.8 | 42.8 | 22.3 |
| 2023-02-04 23:00 | 28.5 | 65.8 | 5.0 | 349.6 | 39.3 | 17.0 |
| 2023-02-04 22:00 | 24.2 | 71.7 | 4.8 | 343.5 | 30.8 | 15.1 |
| 2023-02-04 21:00 | 24.7 | 75.3 | 5.0 | 336.5 | 24.5 | 12.1 |
| 2023-02-04 20:00 | 26.6 | 77.4 | 5.0 | 312.8 | 25.8 | 13.1 |
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.