Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2021-05-18 16:00 | 65.9 | 15.1 | 7.8 | 566.3 | 39.4 | 19.4 |
| 2021-05-18 15:00 | 75.8 | 15.2 | 7.9 | 563.6 | 65.3 | 24.4 |
| 2021-05-18 14:00 | 53.6 | 25.3 | 6.9 | 477.9 | 25.7 | 15.4 |
| 2021-05-18 13:00 | 38.7 | 30.9 | 5.9 | 461.8 | 24.0 | 14.5 |
| 2021-05-18 12:00 | 51.0 | 27.3 | 6.9 | 500.3 | 25.5 | 15.3 |
| 2021-05-18 11:00 | 56.3 | 21.2 | 7.3 | 525.5 | 27.7 | 16.3 |
| 2021-05-18 10:00 | 35.7 | 26.1 | 6.2 | 454.4 | 18.2 | 9.3 |
| 2021-05-18 09:00 | 39.1 | 18.3 | 6.9 | 487.3 | 12.4 | 6.0 |
| 2021-05-18 08:00 | 51.4 | 16.8 | 7.9 | 493.9 | 15.3 | 10.3 |
| 2021-05-18 07:00 | 32.8 | 23.0 | 5.5 | 515.5 | 14.3 | 9.3 |
| 2021-05-18 06:00 | 22.8 | 30.4 | 4.9 | 458.3 | 10.7 | 7.9 |
| 2021-05-18 05:00 | 19.8 | 27.1 | 5.5 | 382.4 | 15.3 | 11.7 |
| 2021-05-18 04:00 | - | 29.0 | - | - | 20.0 | 16.7 |
| 2021-05-18 03:00 | 24.7 | 26.5 | 5.2 | 377.4 | 14.0 | 9.9 |
| 2021-05-18 02:00 | - | 21.1 | 5.3 | 755.2 | 16.0 | 11.3 |
| 2021-05-18 01:00 | 29.4 | 19.1 | 5.7 | 448.6 | 14.9 | 9.5 |
| 2021-05-18 00:00 | 28.5 | - | 5.3 | 449.1 | 25.4 | 21.7 |
| 2021-05-17 23:00 | 32.7 | 22.5 | 6.0 | 481.1 | 29.4 | 21.8 |
| 2021-05-17 22:00 | 55.9 | 12.9 | 7.2 | 646.0 | 17.0 | 10.4 |
| 2021-05-17 21:00 | 27.1 | 23.6 | 5.1 | 497.4 | 18.5 | 12.2 |
| 2021-05-17 20:00 | 37.3 | 20.5 | 6.1 | 520.8 | 25.3 | 17.0 |
| 2021-05-17 19:00 | 57.6 | 15.2 | 7.9 | 566.7 | 33.4 | 21.3 |
| 2021-05-17 18:00 | 63.0 | 12.8 | 9.9 | 695.0 | 35.4 | 20.6 |
| 2021-05-17 17:00 | 70.2 | 14.4 | 7.5 | 656.5 | 31.2 | 17.5 |
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.
