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: 2020-08-11 16:00

StationPollutant Concentration (microgram/m3)/AQIAQHIAQI
NO2O3SO2COPM10PM2.5
Central/Western14/732.8/145/2/-6.5/64.2/17217
Kwun Tong47.1/2311.9/55.1/2/-19/178/33233
Tai Po30.6/1525.9/113.2/1/-5.9/54/16216
Tung Chung6.1/338.4/161.8/098.6/06.1/52.8/11216
Eastern28.1/1418.1/71.5/0/--/--/-2-*
Sha Tin13/633.5/143.2/1/-10.4/93.3/13214
Tseung Kwan O19.5/933.4/145.2/2485.1/49.9/93.3/13214
Tap Mun4.6/246.7/203.2/1319.4/31.7/10.4/1220
Yuen Long15.9/728.2/123.1/1303.3/37.2/66.1/25225
Tuen Mun21.4/1036.2/151.9/1524.6/59.9/94.1/17217
Kwai Chung53.9/274.9/210.2/5/-5.2/42.6/10227
Sham Shui Po23.8/1129.8/123.9/2/-9.7/81.3/5212
Tsuen Wan28.2/1417.9/76.1/3445.7/47.6/74.4/18218
Causeway Bay55.1/2711.8/56.8/3500.9/423.3/2112.3/51351
Central57.2/2813.2/57.3/3547.3/513.8/126.8/28228
Mong Kok65.1/328.2/34.1/2476.2/411.4/106.8/28332

* 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