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: 2024-03-19 11:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western34.9/1726/112.6/1/-9.3/84.3/17217
Kwun Tong31.7/1527.9/121/0/--/-4/16216
Tai Po38.3/1918.7/81.9/1/-5.8/53.8/15219
Tung Chung36.7/1823.8/102.9/1741.4/75.5/54.2/17218
Eastern32.3/1637.3/160.5/0/-6.8/63.8/15216
Sha Tin20/1042.7/180.5/0/-1.3/10.6/2218
Tseung Kwan O13.4/649.4/210.8/0581.1/55.5/5-/-2-*
Tap Mun12.9/648.4/200.4/0621.3/62.5/21/4220
Yuen Long29.2/1433.7/141.5/0977.9/95.5/54.2/17217
Tuen Mun43/2125.8/113.5/1947.8/916/1414.8/56256
Kwai Chung43.8/2125.1/103.3/1/-10/96.7/27227
Sham Shui Po27/1333.7/140.5/0/-5.8/52.9/12214
Tsuen Wan32.5/1626.7/111.8/01067.4/106.7/65/20220
Causeway Bay-/-9/35.9/31159.6/1121.7/2011.3/47347
Central67.5/335/23.4/1766.5/716.6/159.8/40240
Mong Kok49.6/2420.5/82.8/1731.9/75.9/53.2/13224

* 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