Report: Madison air pollution rises 2.6%

From 2019 to 2020, the Madison metropolitan area experienced a 2.6% increase in median air quality index (AQI), a measure of air pollution levels, according to a recent report from Filterbuy. Out of all midsize U.S. metros, Madison experienced the 15th largest decline in air quality from 2019 to 2020. Recent evidence suggests that COVID-19 shutdowns in 2020 had a positive but short-lived effect on air quality.