What is the air quality in Columbia MD?

Columbia MD, United States of America has an annual US AQI of 53 (Reasonable) and average PM2.5 of 10.8 µg/m³, ranking #1045 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Columbia MD?

October is typically the cleanest month (AQI 45) and July the most polluted (AQI 68).

Where does Columbia MD's air quality data come from?

PM2.5: 1998–2026 (monitors 2014–2026, satellite 1998–2014, 2024; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Columbia MD, United States of America — Air Quality & Clean City Guide 2026

Columbia MD Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1045	Columbia MD, United States of America	North America	AQI 53	PM2.5 10.8 µg/m³