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: 2017-07-28 14:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western22.7/1173.1/314.2/2/--/--/-3-*
Kwun Tong30/1562.5/263.4/1/-17/157/29329
Tai Po30.2/1581/343.3/1/-12.8/119.3/38438
Tung Chung24.3/1281.6/356.3/3352.2/315.1/139.5/39339
Eastern34.2/1774/311.5/0/-16.4/15-/-3-*
Sha Tin17.6/884.7/365.2/2/-9.8/95.7/23336
Tseung Kwan O8.4/488.4/386.7/3686.3/614.8/139/37338
Tap Mun5.1/295.9/417.2/3338.4/322.9/2112.5/51351
Yuen Long25.6/12133/765.9/3343/319.4/1719.2/65476
Tuen Mun39.3/19119.3/533.4/1587.3/523.3/2112.3/51453
Kwai Chung39/1960.4/265.9/3/-17.3/1615/57357
Sham Shui Po45.2/2263.3/274.2/2/-12.3/116.9/28328
Tsuen Wan37/1870.5/306/3520.2/513.1/1211/45345
Causeway Bay91.9/4617.8/75.1/2332.9/325.4/2316.8/60360
Central70.8/3531/137.6/4357/312.4/118.7/36336
Mong Kok110.5/5618.4/70.9/0661.9/622.1/2016.5/60360

* 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