What is the air quality in Indianapolis IN?

Indianapolis IN, United States of America has an annual US AQI of 58 (Reasonable) and average PM2.5 of 13.1 µg/m³, ranking #1776 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Indianapolis IN?

April is typically the cleanest month (AQI 52) and July the most polluted (AQI 64).

Where does Indianapolis IN's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Indianapolis IN, United States of America — Air Quality & Clean City Guide 2026

Indianapolis IN Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1776	Indianapolis IN, United States of America	North America	AQI 58	PM2.5 13.1 µg/m³