Real-time & Street-level Air Quality Information You Can Trust
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The Local Air Quality Index - Hong Kong
The Local Air Quality Index is a method used by the government and companies to communicate air quality in an understandable way.
How we calculate the air quality index - Hong Kong
BreezoMeter uses an index called “AQHI (HK)”
We take the average of each pollutant type according to local government definitions.
A scientific formula is used to calculate the AQHI for Hong Kong based on 4 different pollutants (PM2.5/PM10, O3, NO2 and SO2).
Index Health Categories
AQHI (HK) represents air quality levels according to the following health categories:
Category
AQI
Low air pollution
1 to 3
Moderate air pollution
4 to 6
High air pollution
7
Very high air pollution
8 to 10
Serious air pollution
+10
Pollutant Type
Period
pm2.5
3h avg.
pm10
3h avg.
o3
3h avg.
so2
3h avg.
no2
3h avg.
Index Pollutant Types
The chart displays the pollutants that are part of the The following chart displays the pollutants that are part of the AQHI (HK) calculation and the timeframe taken to average each pollutant type.:
Air Quality Indexes Around The Globe
Explore the local air quality indexes BreezoMeter uses in various countries.
