Air Quality in Hong Kong


Since the Air Quality Health Index (AQHI) issued by Hong Kong Environmental Protection Department is not comparable to other regions in the world, Weather Underground of Hong Kong refers to the Air Quality Index (AQI) issued by U.S. Environmental Protection Agency and calculates the Air Quality Index based on air pollutant concentration data issued by Hong Kong Environmenal Protection Department.

Reference Links:

Time: 2019-08-26 01:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western36.9/1867.6/293/1/-20.3/1816.4/60360
Kwun Tong40.9/2053.9/237/3/-20/1820/67367
Tai Po28.3/1461.3/266.4/3/-21.9/2018.8/65365
Tung Chung9.2/484.3/362/1435/429.3/2722.8/73473
Eastern43.9/2251.2/220.6/0/-24.7/2217/61361
Sha Tin13.9/685.5/362.3/1/-27/2518.1/63363
Tseung Kwan O25.8/1269.1/292.9/1569.1/520.2/1819.9/67367
Tap Mun-/--/--/--/-21.8/2012.6/52352
Yuen Long27.6/1363.4/275.1/2662.3/627.4/2518.8/65365
Tuen Mun22.6/1163.7/272.4/1633.5/639.9/3625.9/80380
Kwai Chung41/2059.4/254.6/2/-24.1/2219.5/66366
Sham Shui Po33.1/1664.6/273.8/2/-24.3/2216.8/60360
Tsuen Wan15.4/774.3/325.9/3479.9/418.4/1714.8/56356
Causeway Bay73.4/3624.6/102/11097.4/1027.7/2516.6/60460
Central74.1/3735.1/155.7/31006.8/928.2/2622.6/73473
Mong Kok73.7/3631.2/130.6/0921/932.9/3029.8/88488

* Missing PM2.5 data from Environmental Protection Department

Air Quality Index (AQI)CategoryMeaning
0-50GoodAir pollution risk is low.
51-100ModerateAir quality is acceptable.
101-150Unhealthy for high-risk groupHigh-risk group may have health effects. General public is not affected.
151-200UnhealthyHigh-risk group may have more serious health effects. Some of the general public may have health effects.
201-300Very UnhealthyGeneral public have health effects.
301-500HazardousSome of the general public may have more serious health effects.

Air Quality Health Index (AQHI)Health Risk
1-3Low
4-6Moderate
7High
8-10Very high
10+Serious