Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-01-23 00:00 | 31.7 | 45.9 | 2.3 | 398.8 | 10.7 | 7.1 |
| 2022-01-22 23:00 | 34.9 | 41.9 | 2.2 | 413.5 | 14.9 | 10.7 |
| 2022-01-22 22:00 | 35.7 | 39.7 | 2.6 | 492.2 | 13.3 | 7.5 |
| 2022-01-22 21:00 | 44.4 | 34.6 | 2.9 | 499.8 | 21.7 | 13.7 |
| 2022-01-22 20:00 | 51.6 | 29.1 | 3.6 | 644.6 | 16.9 | 10.8 |
| 2022-01-22 19:00 | 49.0 | 44.2 | 3.3 | 729.9 | 20.5 | 13.6 |
| 2022-01-22 18:00 | 62.1 | 26.9 | 4.4 | 879.2 | 20.2 | 12.3 |
| 2022-01-22 17:00 | 70.9 | 19.3 | 4.7 | 915.5 | 21.2 | 12.7 |
| 2022-01-22 16:00 | 80.2 | 17.5 | 6.0 | 861.6 | 10.5 | 6.5 |
| 2022-01-22 15:00 | 79.6 | 12.7 | 6.2 | 834.5 | 17.1 | 12.5 |
| 2022-01-22 14:00 | 70.5 | 18.5 | 5.2 | 777.0 | 15.9 | 11.7 |
| 2022-01-22 13:00 | 66.0 | 17.1 | 4.8 | 732.9 | 16.8 | 12.1 |
| 2022-01-22 12:00 | 77.6 | 11.8 | 5.3 | 733.4 | 15.4 | 10.1 |
| 2022-01-22 11:00 | 63.7 | 17.7 | 4.0 | 665.9 | 11.3 | 7.1 |
| 2022-01-22 10:00 | 59.4 | 19.3 | 3.5 | 602.4 | 10.2 | 6.4 |
| 2022-01-22 09:00 | 57.2 | 18.9 | 3.8 | 625.6 | 14.2 | 10.3 |
| 2022-01-22 08:00 | 45.9 | 20.8 | 3.3 | 574.9 | 9.3 | 8.5 |
| 2022-01-22 07:00 | 39.8 | 25.6 | 2.7 | 501.5 | 12.2 | 10.2 |
| 2022-01-22 06:00 | 23.9 | 43.7 | 2.1 | 463.3 | 2.7 | - |
| 2022-01-22 05:00 | 28.0 | 43.9 | 2.2 | 535.1 | 7.0 | 3.5 |
| 2022-01-22 04:00 | 28.7 | 46.7 | 2.1 | 954.4 | 14.2 | 10.3 |
| 2022-01-22 03:00 | 40.4 | 39.9 | 2.5 | 749.6 | 4.3 | 3.1 |
| 2022-01-22 02:00 | 40.1 | 41.5 | 2.2 | 565.2 | 11.1 | 7.6 |
| 2022-01-22 01:00 | 45.5 | 37.1 | 2.7 | 617.3 | 28.6 | 20.4 |
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.
