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: 2018-03-24 19:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
Kwun Tong50.7/2589.6/383/1/-61.2/5425.1/78578
Tai Po49.8/2497.4/421.1/0/-50.6/4621.5/70570
Tung Chung24.9/12107.2/469.6/5403.4/463.4/5523.3/74574
Sha Tin18.1/9122.2/585.5/3/-62/5420.8/69569
Tseung Kwan O15.3/7124/613.5/1471.4/455.7/5120.4/68668
Tap Mun9.9/4107.8/466.1/3507.3/551.9/4821.3/70570
Yuen Long41.8/2092.5/397.4/4524.2/565.3/5626.2/80580
Tuen Mun27.6/13108.3/464.6/2739/767.7/5732.1/93593
Kwai Chung68.8/3481.9/352.8/1/-53.2/4923.5/74674
Sham Shui Po74.4/3771.9/314.5/2/-69.3/5826.9/82582
Tsuen Wan50.8/2593.7/404.1/21056.4/1053.2/4923.9/75575
Causeway Bay160.4/8417.9/711.8/6851/876.1/6143.8/1216121
Mong Kok93.3/4659.3/254.6/2801.8/764.1/5531.6/92692

* 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