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: 2019-02-18 17:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western49.8/2436.6/152.5/1/-5.5/54.2/17324
Kwun Tong101.1/503.1/16.1/3/-41.9/3825.9/80380
Tai Po60.4/3011.8/52.3/1/-3.9/33.5/14230
Tung Chung59/2916.8/710.9/5433.8/42.6/21.4/5229
Eastern62.5/3128.4/12-/-/-10/96.9/28331
Sha Tin57.4/2821.7/93.9/2/--/--/-2-*
Tseung Kwan O46/2337.8/165.2/2578.7/57.7/73.1/12323
Tap Mun27/1336.7/155.3/2635.4/64.2/32.7/11215
Yuen Long60/3016.2/63.5/1798.8/75.7/5-/-2-*
Tuen Mun63.7/3111.6/52.7/1895.4/89.1/87.1/29231
Kwai Chung80.3/4018.7/88/4/-13.1/127.3/30340
Sham Shui Po80.3/405.9/23.8/2/-9.9/94.6/19340
Tsuen Wan64.7/3237.3/166.2/3734.5/78.5/78/33333
Causeway Bay106.6/534.6/17.7/4914.5/98.6/76.2/25353
Central102.6/513.6/17.9/41250/1216.3/1512.8/52352
Mong Kok102.3/512.9/16.9/3883.4/816/1413/52352

* 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