Yuen Long
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2023-06-05 11:00 | 18.9 | 40.9 | 4.2 | 512.4 | 10.3 | 4.9 |
| 2023-06-05 10:00 | 20.3 | 31.6 | 4.1 | 508.6 | 11.4 | 6.9 |
| 2023-06-05 09:00 | 24.2 | 22.3 | 4.1 | 564.4 | 10.1 | 8.1 |
| 2023-06-05 08:00 | 30.5 | 16.5 | 4.0 | 621.0 | 7.4 | 7.2 |
| 2023-06-05 07:00 | 23.7 | 21.2 | 4.0 | 526.0 | 6.2 | 4.7 |
| 2023-06-05 06:00 | 13.2 | 29.5 | 3.8 | 442.6 | 10.7 | 7.5 |
| 2023-06-05 05:00 | 9.7 | 33.0 | 3.8 | 458.0 | 10.0 | 6.7 |
| 2023-06-05 04:00 | 10.1 | 34.5 | 4.0 | 433.2 | 9.1 | 5.7 |
| 2023-06-05 03:00 | 9.6 | 37.9 | 4.1 | 452.4 | 11.7 | 8.2 |
| 2023-06-05 02:00 | - | - | - | - | 11.2 | 8.0 |
| 2023-06-05 01:00 | - | - | - | - | 10.3 | 7.1 |
| 2023-06-05 00:00 | 16.9 | 32.3 | 3.8 | 495.4 | 9.7 | 6.8 |
| 2023-06-04 23:00 | 19.2 | 33.0 | 3.7 | 533.6 | 9.5 | 6.6 |
| 2023-06-04 22:00 | 19.4 | 34.8 | 3.7 | 526.1 | 9.2 | 7.0 |
| 2023-06-04 21:00 | 17.7 | 38.4 | 3.7 | 537.9 | 10.7 | 8.2 |
| 2023-06-04 20:00 | 17.5 | 42.9 | 3.9 | 525.4 | 9.8 | 7.3 |
| 2023-06-04 19:00 | 24.0 | 39.2 | 3.9 | 535.2 | 8.6 | 5.9 |
| 2023-06-04 18:00 | 21.2 | 43.6 | 3.7 | 536.0 | 7.5 | 4.8 |
| 2023-06-04 17:00 | 15.1 | 52.6 | 4.0 | 489.9 | 9.8 | 7.0 |
| 2023-06-04 16:00 | 14.0 | 56.9 | 4.0 | 482.2 | 7.4 | 4.8 |
| 2023-06-04 15:00 | 14.1 | 61.6 | 3.8 | 522.3 | 9.3 | 6.4 |
| 2023-06-04 14:00 | 20.3 | 62.4 | 4.2 | 538.9 | 11.2 | 7.8 |
| 2023-06-04 13:00 | 22.6 | 53.0 | 4.4 | 557.6 | 13.4 | 11.3 |
| 2023-06-04 12:00 | 24.0 | 46.7 | 3.9 | 572.8 | 10.2 | 7.6 |
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.
