Past 24 Hours Pollutant Concentration Summary
Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-06-29 10:00 | 18.1 | 23.6 | 3.7 | 480.1 | 8.1 | 3.5 |
| 2022-06-29 09:00 | 23.4 | 15.6 | 3.9 | 499.7 | 8.0 | 4.5 |
| 2022-06-29 08:00 | 22.5 | 16.3 | 3.1 | 438.8 | 11.8 | 7.1 |
| 2022-06-29 07:00 | 33.5 | 7.0 | 3.8 | 519.1 | 11.7 | 7.6 |
| 2022-06-29 06:00 | 30.0 | 6.6 | 3.1 | 495.9 | 9.8 | 6.1 |
| 2022-06-29 05:00 | 32.0 | 2.2 | 3.3 | 509.3 | 11.5 | 6.8 |
| 2022-06-29 04:00 | 41.2 | 3.1 | 4.3 | 512.2 | 12.8 | 7.4 |
| 2022-06-29 03:00 | 46.6 | 1.3 | 4.8 | 496.8 | 10.6 | 6.2 |
| 2022-06-29 02:00 | 49.9 | 2.0 | 5.3 | 491.2 | 10.0 | 4.6 |
| 2022-06-29 01:00 | 54.5 | 2.0 | 5.3 | 528.5 | 10.1 | 5.4 |
| 2022-06-29 00:00 | 55.6 | 4.1 | 5.4 | 491.8 | 8.0 | 4.6 |
| 2022-06-28 23:00 | 38.9 | 22.1 | 5.3 | 484.9 | 5.9 | 3.1 |
| 2022-06-28 22:00 | 44.2 | 24.1 | 5.3 | 516.5 | 7.4 | 4.7 |
| 2022-06-28 21:00 | 43.1 | 20.3 | 5.3 | 529.4 | 7.1 | 4.9 |
| 2022-06-28 20:00 | 39.4 | 26.2 | 5.1 | 501.2 | 6.5 | 4.4 |
| 2022-06-28 19:00 | 46.8 | 19.9 | 7.9 | 496.9 | 7.4 | 5.1 |
| 2022-06-28 18:00 | 35.7 | 34.5 | 5.5 | 492.0 | 8.1 | 4.3 |
| 2022-06-28 17:00 | 34.6 | 49.2 | 4.6 | 465.9 | 8.5 | 4.3 |
| 2022-06-28 16:00 | 31.1 | 56.6 | 3.7 | 472.2 | 13.8 | 7.0 |
| 2022-06-28 15:00 | 25.1 | 75.7 | 3.4 | 448.9 | 11.4 | 4.3 |
| 2022-06-28 14:00 | 37.7 | 53.5 | 5.1 | 462.4 | 15.0 | 6.4 |
| 2022-06-28 13:00 | 40.0 | 41.3 | 5.4 | 516.8 | 15.4 | 6.9 |
| 2022-06-28 12:00 | 34.5 | 37.0 | 5.3 | 465.3 | 12.7 | 5.6 |
| 2022-06-28 11:00 | 32.2 | 27.8 | 4.5 | 491.6 | 6.8 | 4.5 |
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.