v>EPA

United State:
Environment
Agency

Most Counties with Monitors Already Meet
the Strengthened Particle Pollution Standard

Note: Map reflects monitored counties with
complete monitoring data. Future final
designations of attainment/nonattainment will
not be based on these data, but likely on
monitoring data collected between 2022 and
2024. Of the 119 counties with 2020-2022 design
values above 9 ng/rn3, 59 counties are totally or
partially contained in nonattainment areas for
current PM^ standards. In years 2021 and 2022,
EPA is aware that some states have already
identified possible exceptional events that may
have impacted air quality in the US and may be
relevant to designations decisions.

Alaska

Based on 2020-2022 air monitoring data

Counties do not meet the annual PM2 5 standard of 9 ug/m3

This information is provided for illustrative purposes only and is not intended to
predict the outcome of any forthcoming designations process.

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