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.

Reference Links:

Time: 2018-08-15 00:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western25.7/1263.8/277.2/3/-12.4/118.8/36336
Kwun Tong26.6/1365.3/282.5/1/-18.8/1712.8/52352
Tai Po30.4/1572.5/311.1/0/-6.7/63.5/14331
Tung Chung11.1/590.2/385.7/3427.5/412.4/117.7/32338
Eastern28.2/1473.2/310.7/0/-19/1710.2/42342
Sha Tin19.6/977.3/336.5/3/-16.6/159.6/40340
Tseung Kwan O11.7/583.6/363.1/1539.4/518/1612.4/51351
Tap Mun6.2/392.3/396.2/3418.1/417.6/167.6/31339
Yuen Long36.5/1851/225.4/2816.4/88.3/7-/-3-*
Tuen Mun23.4/1168/295.8/3745.9/711/108/33333
Kwai Chung40.5/2055.5/232.4/1/-13.8/126.6/27327
Sham Shui Po35/1759.2/252.2/1/-16.1/1411.2/46346
Tsuen Wan28.7/1460.2/263.9/2590.2/511.7/108.8/36336
Causeway Bay-/--/--/--/-26.4/2419.3/66466
Central81.6/4024.1/104.6/2816.9/815/1311.4/47347
Mong Kok75/3728.8/121.6/0650/6-/--/-3-*

* 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