Past Record of Air Pollution Index (English Version)
Update Frequency: Only the hourly Air Pollution Index (API) of the period from July 1999 to December 2013 is available
Hourly Air Pollution Index (API) at different Air Quality Monitoring stations from July 1999 to December 2013 (English Version)
Data Dictionar(ies) : http://www.aqhi.gov.hk/psi/dd/hk_apien_en.pdf
DATA RESOURCES 174
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