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.

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Time: 2017-03-26 18:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
Kwun Tong44.3/2240.3/174.6/2/-38.1/3514.1/55355
Tai Po43.5/2136.7/153.2/1/-43.7/4023.7/75375
Tung Chung35.3/1729.3/129.3/5668.8/639.4/3616.8/60360
Sha Tin32.1/1655.4/234.8/2/-37.2/3420.9/69369
Tseung Kwan O20.7/1064.3/275.1/2881.1/833.1/3013.8/54354
Tap Mun19.2/957.8/249.7/5795.3/760.3/5323.7/75375
Yuen Long54.4/2728.8/128.2/4901.7/863.3/5523.4/74474
Tuen Mun47.8/2325.7/113.5/1959.5/953/4923/73373
Kwai Chung53.9/2737.8/162.3/1/-23.7/217.5/31331
Sham Shui Po56/2833/145.4/2/-36/3321.1/69369
Tsuen Wan50.7/2533/1410.9/5831/828.5/2616.2/59359
Causeway Bay128.8/666.1/212.4/61266.2/1244.2/4027/82482
Mong Kok75.5/37-/-1.9/1677.5/636.4/3322.2/72372

* 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
8-10Very high