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Particulate Matter (PM) Standards - Integrated Science Assessments from Current Review

The integrated science assessment (ISA) in conjunction with additional technical and policy assessments provides the scientific basis for EPA decisions in the review of NAAQS. The ISA summarizes the science related to the health and welfare effects associated with criteria pollutants by providing a comprehensive review and synthesis of the currently available policy-relevant scientific literature, including that published since the last NAAQS review.

Supplement to the ISA for Particulate Matter (Final) - May 2022
Supplement to the ISA for Particulate Matter (External Review Draft) - September 2021
ISA for Particulate Matter (Final) - December 2019
ISA for Particulate Matter (External Review Draft) - October 2018

You may also be interested in other documents from the current PM NAAQS review.

Particulate Matter (PM) Standards - Integrated Science Assessments from Current Review

Reviewing National Ambient Air Quality Standards (NAAQS)