Air quality guideline

Air quality guideline is an annual mean concentration guideline for particulate matter from the World Health Organization. It stipulates that P2.5 concentration of 10 is the lowest level at which total, cardiopulmonary and lung cancer mortality have been shown to increase with more than 95% confidence in response to long-term exposure to PM2.5.

References

• WHO - WHO Air quality guidelines for particulate matter, ozone, nitrogen dioxide and sulfur dioxide - Page 11