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: 2018-06-22 22:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western72.3/360.7/014.5/7/-21.3/1910.2/42342
Kwun Tong62.8/316.2/24.4/2/-19.8/1813/52352
Tai Po45.1/220.6/01.9/1/-17.1/158.4/35235
Tung Chung32.2/1618/74.5/2422.6/412.3/113.1/12216
Eastern68.3/348.8/37.3/3/-15.5/1410.6/44344
Sha Tin56.5/281.6/07.4/4/-16.2/153.1/12228
Tseung Kwan O52/263.2/12.9/1686.7/615.5/146.1/25226
Tap Mun11.6/516.3/75.4/2421.5/418.4/175.9/24224
Yuen Long54.9/272.6/15.7/3616.2/615.3/145.1/21227
Tuen Mun58.3/294.2/110/5766.4/716.1/146.1/25229
Kwai Chung66/330.6/05.7/3/-18.4/1714.6/56256
Sham Shui Po71.8/362.1/04/2/-18.7/1711.5/47347
Tsuen Wan37.9/194.9/24.3/2480.8/47.7/7-/-2-*
Causeway Bay96.1/480.9/08.5/41607.6/1545.4/4231.9/92492
Central85.4/420.9/012.2/61568.2/1519.4/1712.2/51351
Mong Kok90/453.4/18.8/41356.3/1332.9/3023.8/75375

* 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