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: 2018-12-18 21:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
Kwun Tong37.6/18106.6/466.6/3/-66.2/5621.1/69669
Tai Po60.1/3099.8/434.9/2/-54.6/5024.5/77677
Tung Chung18.1/9130.9/7211.8/6527.1/541/3715.6/58572
Sha Tin80.1/4077.9/338.3/4/-59.6/5333.3/95595
Tseung Kwan O29.7/14124.3/616.6/3641.8/649.5/4520.2/68668
Tap Mun9.4/4133.3/7610.1/5275.1/250.4/4617.9/63676
Yuen Long80.3/4072.8/319.9/5729.2/736.8/3425.3/78578
Tuen Mun52.4/2699.6/438.3/4909.6/950.1/4627.1/82582
Kwai Chung79.2/3981.1/357.3/3/-48.4/4423.1/74674
Sham Shui Po68.5/3485.4/365.4/2/-57.9/5231.2/91591
Tsuen Wan67.2/3391.3/3910/5637.8/643/3924.2/76576
Causeway Bay109.7/5542.8/188.6/4731.3/765.5/5629.8/88688
Mong Kok114.2/5846.8/205.7/3818.4/869.1/5742/1176117

* 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