Past 24 Hours Pollutant Concentration Summary
Central
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-01-30 06:00 | 56.6 | 25.8 | 0.8 | 727.4 | 29.5 | 22.0 |
| 2023-01-30 05:00 | 60.8 | 23.4 | 1.0 | 576.0 | 31.2 | 23.5 |
| 2023-01-30 04:00 | 55.0 | 31.9 | 0.9 | 555.6 | 38.9 | 28.5 |
| 2023-01-30 03:00 | - | 26.5 | - | - | 32.5 | 25.1 |
| 2023-01-30 02:00 | 73.9 | 22.8 | 1.6 | 602.8 | 30.8 | 23.5 |
| 2023-01-30 01:00 | 76.0 | 24.9 | 2.2 | 626.9 | 32.1 | 20.9 |
| 2023-01-30 00:00 | 102.5 | 11.5 | 4.0 | 675.9 | 38.4 | 26.2 |
| 2023-01-29 23:00 | 105.4 | 7.2 | 4.1 | 846.3 | 45.1 | 30.4 |
| 2023-01-29 22:00 | 118.3 | 5.0 | 7.2 | 963.0 | 48.9 | 30.7 |
| 2023-01-29 21:00 | 124.0 | 7.9 | 7.9 | 896.3 | 50.3 | 32.4 |
| 2023-01-29 20:00 | 115.9 | 11.0 | 4.5 | 980.7 | 46.1 | 29.9 |
| 2023-01-29 19:00 | 104.1 | 21.2 | 4.5 | 810.3 | 48.4 | 28.7 |
| 2023-01-29 18:00 | 119.6 | 18.5 | 7.0 | 728.2 | 46.4 | 25.7 |
| 2023-01-29 17:00 | 104.3 | 30.1 | 5.6 | 648.4 | 46.7 | 27.3 |
| 2023-01-29 16:00 | 94.3 | 38.2 | 4.6 | 690.8 | 47.4 | 27.2 |
| 2023-01-29 15:00 | 88.1 | 40.0 | 3.6 | 690.1 | 50.6 | 29.4 |
| 2023-01-29 14:00 | 88.6 | 33.0 | 4.3 | 646.7 | 45.8 | 25.2 |
| 2023-01-29 13:00 | 85.1 | 31.9 | 3.7 | 629.4 | 44.7 | 24.5 |
| 2023-01-29 12:00 | 83.6 | 29.4 | 3.6 | 650.7 | 49.0 | 28.9 |
| 2023-01-29 11:00 | 82.4 | 27.7 | 3.5 | 684.6 | 47.9 | 26.7 |
| 2023-01-29 10:00 | 78.8 | 27.3 | 3.3 | 623.6 | 50.7 | 27.6 |
| 2023-01-29 09:00 | 94.3 | 14.1 | 4.3 | 615.6 | 53.1 | 29.8 |
| 2023-01-29 08:00 | 77.1 | 31.4 | 3.0 | 563.7 | 49.0 | 26.2 |
| 2023-01-29 07:00 | 48.3 | 53.6 | 2.1 | 504.8 | 50.1 | 27.3 |
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.