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: 2020-02-17 13:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western34.1/1757.9/251.9/1/-17.7/1611.5/47347
Kwun Tong21.3/1067/281.8/0/-29.1/2616/59359
Tai Po14.6/7-/-2.9/1/-19.1/1712.7/52352
Tung Chung26.1/1360.3/265.2/2615.5/614.4/135.8/24326
Eastern27.8/1365.3/281.9/1/-19.7/1812.4/51351
Sha Tin8.5/481.1/359.1/4/-15.7/1410.2/42342
Tseung Kwan O6.3/386.7/372.5/1534/510.8/109/37337
Tap Mun3.7/182.2/356.2/3680/618.2/169.8/40340
Yuen Long14.9/775.7/325.6/3302.5/325.2/239.6/40340
Tuen Mun26.9/1371.7/305.6/3610.5/622.2/2017/61361
Kwai Chung59/2945.7/195.1/2/-20/188.7/36336
Sham Shui Po32.7/1662.3/265.5/3/-25.8/239.7/40340
Tsuen Wan24.8/1264.2/275.7/3509.2/517.3/1610.4/43343
Causeway Bay-/--/--/--/-26.7/2414.2/55455
Central86.6/4324/106.2/3880.6/820.2/1810.3/42443
Mong Kok43.8/2153.8/232.9/1537.6/517.2/1511.7/48348

* 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