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Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2010 to 2023 (in micrograms per cubic meter)

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Source

Release date

August 2024

Region

United States

Survey time period

2010 to 2023

Special properties

Seasonally-weighted annual average.

Supplementary notes

Ohio Valley - 59 monitoring sites; Upper Midwest -  38 monitoring sites; Northeast - 73 monitoring sites; Northwest - 10 monitoring sites; South - 30 monitoring sites; Southeast - 63 monitoring sites; Southwest - 19 monitoring sites; West - 46 monitoring sites; Northern Rockies and Plains - 14 monitoring sites.

Citation formats

Average annual PM2.5 concentrations in the United States 2010-2023, by region

Published by ÌÇÐÄÆƽâ°æ Research Department, Feb 14, 2025

The Upper Midwestern United States recorded the highest average concentration of particle pollution (PM2.5) in 2023, at *** micrograms per cubic meter (µg/m3). This was slightly above the national average concentration of PM2.5 pollution that year, and almost double the World Health Organization guideline of **** µ²µ/³¾3.

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