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The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
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National Integrated Drought Information System
AirNow is a one-stop source for air quality data, including current and forecast air quality maps and data for more than 500 cities across the U.S., as well as Canada and Mexico.
The Current Conditions page features national conditions. You can also explore maps of current and future conditions by state, watershed, county, or city.