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The first is a line chart depicting the overall decline in national air quality concentrations for criteria air pollutants from 1990 to 2021. The chart provides national concentration averages, 10th and 90th percentiles, and minimum and maximum values for each year.
The first is a line chart depicting the overall decline in national air quality concentrations for criteria air pollutants from 1990 to 2022. The chart provides national concentration averages, 10th and 90th percentiles, and minimum and maximum values for each year.
The first is a line chart depicting the overall decline in national air quality concentrations for criteria air pollutants from 1990 to 2019. The chart provides national concentration averages, 10th and 90th percentiles, and minimum and maximum values for each year.
Emissions of key air pollutants continue to decline from 1990 levels. These reductions are driven by federal and state implementation of stationary and mobile source regulations.
Emissions of key air pollutants continue to decline from 1990 levels. These reductions are driven by federal and state implementation of stationary and mobile source regulations.
Economic Strength with Cleaner Air. Between 1970 and 2020, the combined emissions of the six common pollutants (PM2.5 and PM10, SO2, NOx, VOCs, CO and Pb) dropped by 78 percent. This progress occurred while the U.S. economy remained strong.
Each dot on this map represents a city or reporting area that issues a forecast. Read more about the air quality forecast. Click on a dot to see forecast info for separate pollutants if available. Tomorrow’s forecast is available in most areas by 4 p.m. local time.
This story map was created with the Story Map Journal application in ArcGIS Online.