Welcome to Environmental Protection Department Air Quality Health Index Website


(At 2024-05-21 15:00)

Tsuen Wan
Added Health Risk
(FAQs)
Contribution by each pollutant on the added health risk (percentage)
SO2 NO2 O3 PM
3.82 0.023 (1%) 1.885 (49%) 1.713 (45%) 0.202 (5%)
Remarks:

(1) Time shown is in Hong Kong time.

(2) The total percentage may not be equal to 100% due to rounding.

(3) Abbreviation:
SO2 - sulphur dioxide, NO2 - nitrogen dioxide, O3 - ozone,
PM – respirable suspended particulates (PM10) or fine suspended particulates (PM2.5), whichever poses a higher health risk.

(4) The AQHI information is based on real time data taken directly from EPD's Air Quality Monitoring Network.

Last revision date: 15:07 21-05-2024