Six cities ranked on all three cleanest cities lists for ozone, year-round particle pollution and short-term particle pollution. They had zero high ozone or high particle pollution days and were among the 25 cities with the lowest year-round particle levels. Four have repeated their ranking on this list, but two join this list for the first time in years. Listed alphabetically below, these six cities are:

  • Bangor, ME
  • Burlington-South Burlington, VT
  • Honolulu, HI
  • Lincoln-Beatrice, NE
  • Palm Bay-Melbourne-Titusville, FL
  • Wilmington, NC

Eight other cities ranked among the cleanest cities for both year-round and short-term levels of particle pollution. That means they had no days in the unhealthy level for short-term particle pollution and were on the list of the cleanest cities for year-round particle pollution. Listed alphabetically below, they are:

  • Cape Coral-Fort Myers-Naples, FL
  • Elmira-Corning, NY
  • Gainesville-Lake City, FL
  • Grand Island, NE
  • North Port-Sarasota, FL
  • Pittsfield, MA
  • St. George, UT
  • Syracuse-Auburn, NY

Nineteen other cities ranked among the cleanest for ozone and short-term particle pollution. That means they had no days in the unhealthy level for ozone or for short-term particle pollution. Listed alphabetically below, they are:

  • Bowling Green-Glasgow, KY
  • Clarksville, TN-KY
  • Eau Claire-Menomonie, WI
  • Fayetteville-Sanford-Lumberton, NC
  • Fayetteville-Springdale-Rogers, AR
  • Florence, SC
  • Fort Smith, AR-OK
  • Gadsden, AL
  • Greenville-Kinston-Washington, NC
  • Houma-Thibodaux, LA
  • Jackson-Vicksburg-Brookhaven, MS
  • La Crosse-Onalaska, WI-MN
  • McAllen-Edinburg, TX
  • Monroe-Ruston, LA
  • Roanoke, VA
  • Springfield, MO
  • Tallahassee, FL
  • Tuscaloosa, AL
  • Waterloo-Cedar Falls, IA

Four cities ranked on both lists for ozone and year-round particle pollution levels. These cities had no days in the unhealthy level for ozone pollution and were on the list of the cleanest cities for year-round particle pollution. Listed alphabetically below, they are:

  • Anchorage, AK
  • Bellingham, WA
  • Casper, WY
  • Salinas, CA