World Health Organization Air Quality Guidelines

The WHO air quality guidelines offer guidance on reducing the effects on health of air pollution. Many guidelines used on LAWA are from the WHO 2005.  The guidelines updated in September 2021 indicate human health impacts from particulate matter and gases at much lower concentrations than known previously.  Guidelines used for the Air Quality topic will be reviewed during 2022.

Find out more about the WHO air quality guidelines from 2005 and 2021.