Top 10 Cleanest U.S. Cities in 2024

Urban Honolulu, Hawaii Enjoy the refreshing ocean breeze and lush green landscapes in this tropical paradise with consistently clean air.

Casper, Wyoming Experience the crisp, pollution-free air of the Cowboy State surrounded by stunning natural beauty.

Kahului-Wailuku-Lahaina, Hawaii Breathe in the clean, island air of Maui, surrounded by breathtaking beaches and majestic mountains.

Wilmington, North Carolina Revel in the fresh coastal air of Wilmington, where sea breezes keep the atmosphere clean and invigorating.

Bangor, Maine Embrace the pristine air quality of Bangor, nestled amidst Maine's picturesque forests and rivers.

Cheyenne, Wyoming Enjoy the clear mountain air of Cheyenne, Wyoming's capital city, known for its wide-open spaces and clean environment.

Duluth, Minnesota-Wisconsin Experience the pure air of Duluth, situated on the shores of Lake Superior, offering refreshing breezes and stunning views.

Colorado Springs, Colorado Breathe in the fresh mountain air of Colorado Springs, surrounded by the majestic peaks of the Rocky Mountains.

Anchorage, Alaska Revel in the pristine air quality of Anchorage, Alaska's largest city, surrounded by breathtaking wilderness and natural beauty.

St. George, Utah Enjoy the clean desert air of St. George, where red rock landscapes and clear blue skies create an idyllic environment for outdoor enthusiasts.