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: 2022-12-09 20:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western66.9/3335/155.9/3/-48.9/4528/84484
Kwun Tong79/3917.9/78.2/4/-47.4/4325/78478
Tai Po74.4/3712.9/52.9/1/-50.6/4629.8/88488
Tung Chung58.5/2924.3/106.8/3400.7/344/4029.2/86486
Eastern53.4/2653.8/232.7/1/-49.8/4628.8/86486
Sha Tin53.3/2637.3/168.8/4/-53.1/4929.6/87487
Tseung Kwan O61.4/3031.1/135.6/3431.9/439.3/3621.6/70470
Tap Mun17/865.6/286.6/3373/332.6/3020/67367
Yuen Long73.1/3637.5/165.2/2607.2/648.4/4432.5/93493
Tuen Mun69.9/3527.1/113/1981.9/960.1/5333.2/95495
Kwai Chung41/2044.3/192.7/1/-50.9/4731/90490
Sham Shui Po68.2/3431.7/135.4/2/-52.2/4826.1/80480
Tsuen Wan69.3/3419/88.9/41029.9/1049.5/4531.5/91491
Causeway Bay109.4/5510.3/48.9/41276.6/1288.6/6752.6/1435143
Central107.8/545/28.2/41248.3/1264.6/5535.9/1015101
Mong Kok87.3/4324.5/103.8/2683.9/661.4/5436.5/1035103

* 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