What is the air quality in Twin Falls ID?

Twin Falls ID, United States of America has an annual US AQI of 42 (Reasonable) and average PM2.5 of 6.6 µg/m³, ranking #311 of 5856 cities. Main pollutant: O3.

What is the cleanest month in Twin Falls ID?

February is typically the cleanest month (AQI 37) and August the most polluted (AQI 51).

Where does Twin Falls ID's air quality data come from?

PM2.5: 1998–2026 (monitors 2001–2002, 2005–2012, 2016, 2018–2026, satellite 1998–2000, 2003–2004, 2013–2015, 2017; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Twin Falls ID, United States of America — Air Quality & Clean City Guide 2026

Twin Falls ID Air Quality Data

Global rank	City	Continent	AQI	PM2.5
311	Twin Falls ID, United States of America	North America	AQI 42	PM2.5 6.6 µg/m³