Annual Average Health Risks

Technical Background
Annual Risk
Short Term Risk
•Marathon 2015

Annual Average Air Quality Index (AAQI)         [ Show AQ Concentration ]

Last updated: 2019/10/16 16:00                  
AAQI = 12-Month Rolling Average Concentration
Annual* WHO Air Quality Guideline

For PM2.5, PM10 and NO2, we have used the WHO Annual AQ guideline values of 10, 20 and 40 ug/m3. For SO2, since there is no annual AQ guideline, we have used the WHO 24-hour AQ guideline values of 20 ug/m3, which is also the annual average referenced by European Commission.

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Environmental Central Facility   •   Institute for the Environment

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