Past 24 Hours Pollutant Concentration Summary
Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-05-05 14:00 | 30.2 | 99.2 | 2.5 | 605.7 | 14.7 | 11.2 |
| 2024-05-05 13:00 | 41.2 | 80.8 | 2.2 | 617.1 | 8.7 | 6.9 |
| 2024-05-05 12:00 | 21.3 | 86.8 | 1.7 | 601.1 | 7.8 | 6.4 |
| 2024-05-05 11:00 | 22.5 | 76.4 | 1.5 | 578.8 | 6.7 | 5.7 |
| 2024-05-05 10:00 | 19.6 | 59.4 | 1.3 | 592.8 | 9.9 | 8.7 |
| 2024-05-05 09:00 | 33.5 | 37.4 | 1.7 | 666.3 | 11.2 | 9.6 |
| 2024-05-05 08:00 | 25.9 | 38.6 | 1.6 | 593.6 | 16.3 | 13.8 |
| 2024-05-05 07:00 | 36.3 | 29.0 | 1.5 | 661.7 | 14.2 | 11.5 |
| 2024-05-05 06:00 | 25.0 | 38.4 | 1.2 | 588.3 | 17.3 | 12.5 |
| 2024-05-05 05:00 | 36.8 | 13.2 | 1.6 | 756.8 | 19.3 | 14.5 |
| 2024-05-05 04:00 | 40.7 | 13.4 | 1.6 | 710.0 | 15.3 | 11.4 |
| 2024-05-05 03:00 | 40.9 | 14.3 | 1.4 | 727.2 | 14.2 | 10.5 |
| 2024-05-05 02:00 | 40.1 | 24.3 | 1.3 | 698.7 | 16.1 | 12.9 |
| 2024-05-05 01:00 | 59.8 | 13.2 | 1.2 | 792.0 | 13.5 | 11.7 |
| 2024-05-05 00:00 | 70.1 | 12.6 | 1.7 | 796.3 | 7.2 | 6.7 |
| 2024-05-04 23:00 | 48.3 | 42.5 | 1.2 | 676.3 | 4.6 | - |
| 2024-05-04 22:00 | 52.4 | 46.1 | 1.2 | 649.5 | 7.5 | - |
| 2024-05-04 21:00 | 44.8 | 60.0 | 1.4 | 639.0 | 10.2 | - |
| 2024-05-04 20:00 | 64.7 | 54.4 | 1.5 | 645.8 | 5.2 | - |
| 2024-05-04 19:00 | 45.6 | 73.0 | 1.2 | 577.8 | - | - |
| 2024-05-04 18:00 | 56.9 | 51.9 | 1.6 | 648.4 | 4.5 | - |
| 2024-05-04 17:00 | 52.2 | 53.5 | 1.7 | 669.9 | - | 1.0 |
| 2024-05-04 16:00 | 43.2 | 71.3 | 1.7 | 547.6 | 7.2 | - |
| 2024-05-04 15:00 | 39.8 | 76.6 | 1.3 | 564.4 | - | 0.4 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) Concentration shown is in microgram per cubic metre (µg/m3).
(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.