Past 24 Hours Pollutant Concentration Summary
Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-12-07 21:00 | 112.5 | 21.0 | 6.1 | 749.3 | 41.0 | 21.4 |
| 2023-12-07 20:00 | 104.1 | 28.4 | 6.2 | 703.8 | 44.0 | 24.2 |
| 2023-12-07 19:00 | 91.5 | 49.4 | 6.6 | 783.9 | 38.7 | 21.6 |
| 2023-12-07 18:00 | 81.2 | 63.7 | 6.8 | 697.6 | 39.5 | 20.1 |
| 2023-12-07 17:00 | 78.5 | 87.3 | 6.8 | 635.8 | 34.2 | 16.1 |
| 2023-12-07 16:00 | 95.7 | 34.4 | 6.1 | 700.9 | 34.0 | 16.5 |
| 2023-12-07 15:00 | 98.3 | 35.1 | 6.2 | 489.0 | 21.5 | 9.4 |
| 2023-12-07 14:00 | 90.9 | 37.2 | 6.4 | 471.2 | 32.9 | 18.2 |
| 2023-12-07 13:00 | 112.4 | 19.2 | 7.0 | 599.8 | 37.9 | 16.2 |
| 2023-12-07 12:00 | 106.2 | 14.6 | 9.0 | 664.1 | 37.1 | 14.7 |
| 2023-12-07 11:00 | 119.3 | 10.0 | 11.0 | 883.3 | 43.4 | 21.7 |
| 2023-12-07 10:00 | 104.8 | 12.2 | 8.1 | 632.3 | 43.8 | 24.8 |
| 2023-12-07 09:00 | 100.4 | 11.0 | 8.6 | 653.3 | 37.1 | 20.6 |
| 2023-12-07 08:00 | 83.0 | 18.9 | 7.4 | 592.9 | 29.9 | 17.9 |
| 2023-12-07 07:00 | 82.2 | 8.8 | 6.2 | 597.0 | 23.6 | 15.1 |
| 2023-12-07 06:00 | 57.2 | 15.0 | 3.3 | 465.2 | 16.0 | 9.8 |
| 2023-12-07 05:00 | 56.4 | 17.0 | 3.1 | 439.3 | 11.3 | 6.5 |
| 2023-12-07 04:00 | 49.3 | 21.6 | 3.3 | 450.5 | 13.0 | 7.3 |
| 2023-12-07 03:00 | 54.6 | 20.4 | 3.6 | 481.6 | 15.1 | 9.7 |
| 2023-12-07 02:00 | 63.6 | 13.6 | 4.2 | 562.5 | 22.6 | 16.2 |
| 2023-12-07 01:00 | 60.9 | 25.0 | 4.0 | 489.3 | 24.9 | 17.3 |
| 2023-12-07 00:00 | 55.0 | 32.0 | 4.3 | 520.4 | 29.5 | 20.7 |
| 2023-12-06 23:00 | 56.2 | 27.7 | 4.8 | 612.7 | 42.4 | 34.0 |
| 2023-12-06 22:00 | 74.5 | 18.3 | 5.9 | 809.3 | 34.3 | 22.9 |
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.