Updated April 2026
Air Quality Tools & Calculators
Use 10 years of EPA air quality data to check your city's grade, track AQI trends, and estimate your cumulative air pollution exposure across 1,020+ US cities.
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Air Quality Report Card
Look up any city to see its Air Quality Grade, current median AQI, 5-year trend, and count of unhealthy air days.
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Personal Exposure Estimator
Select a city and enter how many years you've lived there to calculate your cumulative unhealthy air days and dominant pollutant exposure.
Data source: These tools use EPA Air Quality System (AQS) annual AQI data from 2014-2023. Air quality varies daily; these tools show historical trends and averages, not real-time conditions.