1.1 PM2.5
PM2.5 are heterogeneous mixtures of fine inhalable
particles defined by an aerodynamic diameter of less than or equal to
2.5µm.1,3 AQG and interim target levels were set based
on the pollutant-attributed increase in all-cause non-accidental
mortality and cause-specific mortality with high certainty of evidence.
- AQG level (µg/m3):
- Annual exposure: 5
- 24-hour exposure: 15
- Interim Targets (µg/m3):
- Annual exposure: 35, 25, 15, 10
- 24-hour exposure: 75, 50, 37.5, 25
- Health outcomes : all-cause mortality, cardiovascular mortality,
respiratory mortality, lung cancer mortality
- Causality : all associations between PM2.5 and
health outcomes were determined to be causal or likely causal