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: 22 Nov 2024 01:00:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western-/-11.2/4-/--/-13.9/129.2 /38238
Kwun Tong38.8/1911.8/51.0/0-/-11.2/108.2 /34234
Tai Po16.8/829.9/121.5/0-/-18.3/1613.6 /54254
Tung Chung-/--/--/--/-11.6/108.9 /37237
Eastern26.0/1329.2/12.8/0-/-11.1/109.5 /39239
Sha Tin18.0/932.3/131.0/0-/-11.7/108.1 /33233
Tseung Kwan O15.2/736.0/15.5/0306.8/315.0/1310.2 /42242
Tap Mun9.7/441.0/172.0/1442.7/417.0/1513.6 /54254
Yuen Long-/--/--/--/-20.2/1818.0 /63263
Tuen Mun17.6/834.0/143.5/1599.4/524.9/2319.1 /65265
Kwai Chung15.5/735.3/15.5/0-/-9.6/88.0 /33233
Sham Shui Po22.2/1129.9/124.1/2-/-13.2/1210.5 /43243
Tsuen Wan-/--/--/--/-12.9/1111.3 /47247
Causeway Bay35.1/1716.0/61.5/0427.2/420.9/1915.3 /57257
Central44.5/228.2/32.2/1586.3/523.3/2113.1 /53253
Mong Kok36.5/186.8/23.6/1742.6/717.5/1613.9 /54254

* 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