RSP - Respirable Suspended Pariculates
FSP - Fine Suspended Pariculates
NO2 - Nitrogen Dioxide
O3 - Ozone
SO2 - Sulphur Dioxide
CO - Carbon Monoxide
AQHI - Air Quality Health Index
Concentrations in micrograms per cubic meter (m³).
Pollutant concentrations and AQHI information are based on raw data obtained directly from HKIA’s three air quality monitoring stations and making reference to the HKSAR AQHI calculation.
Value marked with an asterisk “*” refers to data used for calculation of AQHI was adopted from other stations.
“-“ means that the data is temporarily unavailable.