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.