5 Greenest Small Towns in America

4. Bayfield, Colorado

Average PM2.5 Concentration (2023): 2.2 µg/m³

Bayfield is a small town in La Plata County, Colorado. It offers a vibrant and sustainable living standard. In 2023, its average fine particulate matter concentration was 2.2 micrograms per cubic meter. It is ranked 4th on our list.