| Location |
Parts Per 2.5mil |
Health |
| Aberdeen, WA |
2.5 |
Good |
| Acadia National Park, ME |
2.5 |
Good |
| Adams - Mt. Greylock, MA |
2.5 |
Moderate |
| Aiken-Augusta - SC/GA, SC |
2.5 |
Good |
| Albany, NY |
2.5 |
Good |
| Albuquerque, NM |
2.5 |
Good |
| Amherst, MA |
2.5 |
Good |
| Ann Arbor, MI |
2.5 |
Good |
| Antelope Vly, CA |
2.5 |
Good |
| Anza Vly, CA |
2.5 |
Moderate |
| Apache Junction, AZ |
2.5 |
Good |
| Asheville Ridge Tops (above 4000 feet), NC |
2.5 |
Good |
| Asheville Valleys (below 4000 feet), NC |
2.5 |
Good |
| Atascadero, CA |
2.5 |
Good |
| Atlanta, GA |
2.5 |
Moderate |
| Auburn, CA |
2.5 |
Good |
| Austin, TX |
2.5 |
Good |
| Bakersfield, CA |
2.5 |
Moderate |
| Bangor, ME |
2.5 |
Good |
| Banning, CA |
2.5 |
UnhealthySG |
| Barstow, CA |
2.5 |
Good |
| Base - Whiteface Mountain, NY |
2.5 |
Good |
| Baton Rouge Area, LA |
2.5 |
Moderate |
| Beaumont-Port Arthur, TX |
2.5 |
Moderate |
| Bellingham, WA |
2.5 |
Good |
| Bennington, VT |
2.5 |
Moderate |
| Benton Harbor, MI |
2.5 |
Good |
| Birmingham, AL |
2.5 |
Moderate |
| Boise, ID |
2.5 |
Good |
| Boston, MA |
2.5 |
Moderate |
| Bremerton-Silverdale-Bainbridge Island, WA |
2.5 |
Good |
| Bridgeport, CT |
2.5 |
Good |
| Brigantine, NJ |
2.5 |
Moderate |
| Brownsville-McAllen, TX |
2.5 |
Good |
| Buffalo, NY |
2.5 |
Good |
| Burlington, VT |
2.5 |
Good |
| C San Bernardino M, CA |
2.5 |
UnhealthySG |
| C San Bernardino-1, CA |
2.5 |
Good |
| C San Bernardino-2, CA |
2.5 |
Good |
| Camden, NJ |
2.5 |
Good |
| Cape Cod and Islands, MA |
2.5 |
Good |
| Capistrano Vly, CA |
2.5 |
Good |
| Carmel Valley, CA |
2.5 |
Good |
| Carpinteria, CA |
2.5 |
Good |
| Carrizo Plains, CA |
2.5 |
Good |
| Casa Grande, AZ |
2.5 |
Good |
| Cascade foothills of east King-Pierce counties, WA |
2.5 |
Good |
| Central Coastal, CA |
2.5 |
Good |
| Central LA CO, CA |
2.5 |
Good |
| Central Orange-1, CA |
2.5 |
Good |
| Central Orange-2, CA |
2.5 |
Good |
| Charleston, SC |
2.5 |
Moderate |
| Charlotte, NC |
2.5 |
Moderate |
| Chattanooga, TN |
2.5 |
Moderate |
| Chester, NJ |
2.5 |
Good |
| Chicago, IL |
2.5 |
Moderate |
| Chico, CA |
2.5 |
Moderate |
| Cincinnati, OH |
2.5 |
UnhealthySG |
| Clarksboro, NJ |
2.5 |
Good |
| Clarksville-Montgomery County, TN |
2.5 |
Moderate |
| Cleveland-Akron-Lorain, OH |
2.5 |
Moderate |
| Coachella Vly, CA |
2.5 |
Moderate |
| Coeur dAlene, ID |
2.5 |
Good |
| Colorado Springs, CO |
2.5 |
Good |
| Columbia, SC |
2.5 |
Moderate |
| Columbus, OH |
2.5 |
Good |
| Columbus-Phenix City - GA/AL, AL |
2.5 |
Moderate |
| Columbus-Phenix City - GA/AL, GA |
2.5 |
Moderate |
| Concord, CA |
2.5 |
Good |
| Concord, NH |
2.5 |
Good |
| Conway, NH |
2.5 |
Good |
| Corpus Christi, TX |
2.5 |
Good |
| Dallas-Fort Worth, TX |
2.5 |
Moderate |
| Danbury, CT |
2.5 |
Good |
| Darrington, WA |
2.5 |
Good |
| Davenport, CA |
2.5 |
Good |
| Davis, CA |
2.5 |
Moderate |
| Dayton, OH |
2.5 |
Good |
| Daytona Beach, FL |
2.5 |
Good |
| Death Valley National Park, CA |
2.5 |
Good |
| Denver, CO |
2.5 |
Good |
| Des Moines, IA |
2.5 |
Good |
| Detroit, MI |
2.5 |
Moderate |
| Dona Ana County, NM |
2.5 |
Good |
| Dunkirk, NY |
2.5 |
Good |
| E San Bernardino, CA |
2.5 |
Moderate |
| E San Fernando Vly, CA |
2.5 |
Good |
| E San Gabriel V-1, CA |
2.5 |
Good |
| E San Gabriel V-2, CA |
2.5 |
Good |
| Eastern Shore, MD |
2.5 |
Moderate |
| Eastern U.P., MI |
2.5 |
Good |
| El Paso, TX |
2.5 |
Good |
| Elk Grove, CA |
2.5 |
Moderate |
| Eugene/Springfield, OR |
2.5 |
Good |
| Evansville, IN |
2.5 |
Good |
| Everett-Marysville-Lynnwood, WA |
2.5 |
Good |
| Fairfield, CA |
2.5 |
Good |
| Fairhaven, MA |
2.5 |
Moderate |
| Fall River, MA |
2.5 |
Moderate |
| Fayetteville, NC |
2.5 |
Good |
| Flemington, NJ |
2.5 |
Moderate |
| Flint, MI |
2.5 |
Good |
| Florence/Darlington, SC |
2.5 |
Moderate |
| Folsom, CA |
2.5 |
Moderate |
| Fond du Lac, WI |
2.5 |
Good |
| Forsyth County-Winston-Salem-Greensboro-High Point, NC |
2.5 |
Good |
| Fort Lee, NJ |
2.5 |
Good |
| Fort Myers, FL |
2.5 |
Good |
| Fort Pierce, FL |
2.5 |
Good |
| Fort Wayne, IN |
2.5 |
Good |
| Fremont, CA |
2.5 |
Moderate |
| Fresno, CA |
2.5 |
Moderate |
| Gardiner, ME |
2.5 |
Good |
| Gaviota Coast, CA |
2.5 |
Good |
| Goleta, CA |
2.5 |
Moderate |
| Grand Junction, CO |
2.5 |
Good |
| Grand Rapids, MI |
2.5 |
Good |
| Great Smoky Mtns. Natl. Park - NC, TN |
2.5 |
Moderate |
| Greeley, CO |
2.5 |
Good |
| Green Bay, WI |
2.5 |
Good |
| Greenville-Spartanburg, SC |
2.5 |
Good |
| Greenwich, CT |
2.5 |
Good |
| Hammond-Gary, IN |
2.5 |
Good |
| Hampton Roads, VA |
2.5 |
Good |
| Hartford, CT |
2.5 |
Good |
| Hemet/San Jacinto, CA |
2.5 |
Good |
| Hesperia, CA |
2.5 |
Moderate |
| Hickory, NC |
2.5 |
Good |
| Hilo, HI |
2.5 |
Good |
| Holden, ME |
2.5 |
Good |
| Hollister, CA |
2.5 |
Good |
| Honolulu, HI |
2.5 |
Good |
| Houghton Lake, MI |
2.5 |
Good |
| Houston-Galveston-Brazoria, TX |
2.5 |
Moderate |
| Huntsville, AL |
2.5 |
Good |
| Idaho Falls, ID |
2.5 |
Good |
| Imperial Valley, CA |
2.5 |
Moderate |
| Indianapolis, IN |
2.5 |
Good |
| Jackson, MS |
2.5 |
Good |
| Jacksonville, FL |
2.5 |
Good |
| Jonesport, ME |
2.5 |
Good |
| Kalamazoo, MI |
2.5 |
Good |
| Kansas City, MO |
2.5 |
Moderate |
| Kapolei, HI |
2.5 |
Good |
| Kennebunkport, ME |
2.5 |
Good |
| Kihei, HI |
2.5 |
Good |
| King City, CA |
2.5 |
Good |
| Knoxville, TN |
2.5 |
Moderate |
| Kona, HI |
2.5 |
Good |
| La Crosse, WI |
2.5 |
Good |
| Laconia, NH |
2.5 |
Good |
| Lafayette, LA |
2.5 |
Good |
| Lake Charles, LA |
2.5 |
Good |
| Lake Elsinore, CA |
2.5 |
Good |
| Lakeland, FL |
2.5 |
Good |
| Lansing, MI |
2.5 |
Good |
| Laredo, TX |
2.5 |
Good |
| Las Vegas, NV |
2.5 |
Good |
| Lassen Volcanic National Park, CA |
2.5 |
Good |
| Lawton, OK |
2.5 |
Moderate |
| Lebanon, NH |
2.5 |
Good |
| Lehigh Valley, PA |
2.5 |
Moderate |
| Lewiston, ID |
2.5 |
Good |
| Lewiston-Auburn, ME |
2.5 |
Good |
| Lexington, KY |
2.5 |
Good |
| Liberty/Clairton area, PA |
2.5 |
Moderate |
| Little Rock-North Little Rock, AR |
2.5 |
Moderate |
| Livermore, CA |
2.5 |
Good |
| Lompoc, CA |
2.5 |
Good |
| Louisville, KY |
2.5 |
Moderate |
| Lovell, ME |
2.5 |
Good |
| Ludington, MI |
2.5 |
Good |
| Lynn, MA |
2.5 |
Good |
| Macon, GA |
2.5 |
Moderate |
| Madison, CT |
2.5 |
Good |
| Madison, WI |
2.5 |
Good |
| Mammoth Cave National Park, KY |
2.5 |
Moderate |
| Manchester, NH |
2.5 |
Good |
| Melbourne, FL |
2.5 |
Good |
| Memphis, TN |
2.5 |
Good |
| Mendocino County, CA |
2.5 |
Good |
| Merced, CA |
2.5 |
Moderate |
| Metro Riverside CO, CA |
2.5 |
Good |
| Metropolitan Baltimore, MD |
2.5 |
Moderate |
| Metropolitan Washington, DC |
2.5 |
Moderate |
| Miami, FL |
2.5 |
Good |
| Middletown, CT |
2.5 |
Good |
| Midland-Odessa, TX |
2.5 |
Good |
| Millville, NJ |
2.5 |
Moderate |
| Milton - Blue Hill Observatory, MA |
2.5 |
Good |
| Milwaukee, WI |
2.5 |
Good |
| Minneapolis-St. Paul, MN |
2.5 |
Good |
| Mississippi Gulf Coast, MS |
2.5 |
Good |
| Mobile, AL |
2.5 |
Moderate |
| Modesto, CA |
2.5 |
Moderate |
| Monmouth, NJ |
2.5 |
Good |
| Monroe, LA |
2.5 |
Good |
| Morro Bay, CA |
2.5 |
Good |
| Mount Vernon, WA |
2.5 |
Good |
| N Coastal Orange, CA |
2.5 |
Good |
| Napa, CA |
2.5 |
Moderate |
| Narragansett, RI |
2.5 |
Moderate |
| Nashua, NH |
2.5 |
Good |
| Nashville, TN |
2.5 |
Moderate |
| New Brunswick, NJ |
2.5 |
Good |
| New Haven, CT |
2.5 |
Good |
| New Jersey Highlands, NJ |
2.5 |
Moderate |
| New London-Groton, CT |
2.5 |
Good |
| New Orleans, LA |
2.5 |
Good |
| New York City, NY |
2.5 |
Moderate |
| Newark, NJ |
2.5 |
Good |
| Newburgh, NY |
2.5 |
Good |
| Newbury, MA |
2.5 |
Good |
| Nicks Lake, NY |
2.5 |
Good |
| Nipomo, CA |
2.5 |
Good |
| Norco/Corona, CA |
2.5 |
Good |
| North Orange CO, CA |
2.5 |
Good |
| Northern Delaware, DE |
2.5 |
Moderate |
| Northern Virginia, VA |
2.5 |
Moderate |
| NW Coastal LA, CA |
2.5 |
Good |
| NW San Bernardino, CA |
2.5 |
Good |
| Oakland, CA |
2.5 |
Good |
| Oakridge, OR |
2.5 |
Good |
| Ocean County/Colliers Mills, NJ |
2.5 |
Good |
| Ojai, CA |
2.5 |
Moderate |
| Oklahoma City, OK |
2.5 |
Moderate |
| Olympia-Lacey-Tumwater, WA |
2.5 |
Good |
| Omaha, NE |
2.5 |
Good |
| Orlando, FL |
2.5 |
Good |
| Oxnard, CA |
2.5 |
Moderate |
| Pahala, HI |
2.5 |
Good |
| Paradise, CA |
2.5 |
Good |
| Paradise Road, CA |
2.5 |
Good |
| Paso Robles, CA |
2.5 |
Good |
| Pearl City, HI |
2.5 |
Good |
| Penobscot Nation, ME |
2.5 |
Good |
| Pensacola, FL |
2.5 |
Good |
| Peoria, IL |
2.5 |
Moderate |
| Perch River, NY |
2.5 |
Good |
| Perris Vly, CA |
2.5 |
Good |
| Phelan, CA |
2.5 |
Moderate |
| Philadelphia, PA |
2.5 |
Moderate |
| Phoenix, AZ |
2.5 |
Moderate |
| Pinal Air Park, AZ |
2.5 |
Good |
| Pinal County, AZ |
2.5 |
Good |
| Pinnacle State Park, NY |
2.5 |
Good |
| Pinnacles National Monument, CA |
2.5 |
Good |
| Piru, CA |
2.5 |
Moderate |
| Pittsburgh, PA |
2.5 |
Moderate |
| Pittsfield, MA |
2.5 |
Good |
| Placerville, CA |
2.5 |
Moderate |
| Pocatello, ID |
2.5 |
Good |
| Port Angeles, WA |
2.5 |
Good |
| Port Clyde, ME |
2.5 |
Good |
| Port Townsend, WA |
2.5 |
Good |
| Portland, ME |
2.5 |
Good |
| Portland, OR |
2.5 |
Good |
| Portsmouth, NH |
2.5 |
Good |
| Presque Isle, ME |
2.5 |
Good |
| Providence, RI |
2.5 |
Good |
| Racine-Kenosha, WI |
2.5 |
Good |
| Raleigh-Durham-Chapel Hill, NC |
2.5 |
Good |
| Ramapo, NJ |
2.5 |
Good |
| Raymond, WA |
2.5 |
Good |
| Red Hills, CA |
2.5 |
Good |
| Redding, CA |
2.5 |
Moderate |
| Redwood City, CA |
2.5 |
Moderate |
| Richmond, VA |
2.5 |
Good |
| Rider University, NJ |
2.5 |
Good |
| Rio Vista, CA |
2.5 |
Good |
| Riverhead, NY |
2.5 |
Good |
| Roanoke, VA |
2.5 |
Good |
| Rochester, MN |
2.5 |
Good |
| Rock Island-Moline, IL |
2.5 |
Moderate |
| Rockford, IL |
2.5 |
Good |
| Rocky Mount, NC |
2.5 |
Moderate |
| Roseville-Rocklin, CA |
2.5 |
Good |
| Rutland, VT |
2.5 |
Good |
| S Central LA CO, CA |
2.5 |
Good |
| S San Gabriel Vly, CA |
2.5 |
Good |
| Sacramento, CA |
2.5 |
Moderate |
| Saddleback Vly, CA |
2.5 |
Good |
| Saginaw, MI |
2.5 |
Good |
| Saint Louis, MO |
2.5 |
Good |
| Salinas, CA |
2.5 |
Good |
| Salt Lake City, UT |
2.5 |
Good |
| San Antonio, TX |
2.5 |
Good |
| San Diego Coast, CA |
2.5 |
Moderate |
| San Diego Foothills, CA |
2.5 |
Moderate |
| San Diego Mesa and Inland Valley, CA |
2.5 |
Moderate |
| San Francisco, CA |
2.5 |
Good |
| San Gabriel Mts, CA |
2.5 |
Good |
| San Jose, CA |
2.5 |
Good |
| San Juan County, NM |
2.5 |
Good |
| San Rafael, CA |
2.5 |
Moderate |
| Sand Island, HI |
2.5 |
Good |
| Santa Barbara, CA |
2.5 |
Moderate |
| Santa Clarita Vly, CA |
2.5 |
Good |
| Santa Cruz, CA |
2.5 |
Good |
| Santa Maria, CA |
2.5 |
Good |
| Santa Rosa, CA |
2.5 |
Moderate |
| Santa Ynez, CA |
2.5 |
Good |
| Sarasota, FL |
2.5 |
Good |
| Seattle-Bellevue-Kent Valley, WA |
2.5 |
Good |
| Sequoia/Kings Canyon National Parks, CA |
2.5 |
Moderate |
| Sheboygan, WI |
2.5 |
Good |
| Shelton, WA |
2.5 |
Good |
| Shreveport, LA |
2.5 |
Good |
| Simi Valley, CA |
2.5 |
Moderate |
| Sipayik, ME |
2.5 |
Good |
| South Bend, IN |
2.5 |
Good |
| South Coastal LA, CA |
2.5 |
Good |
| Southeast LA CO, CA |
2.5 |
Good |
| Southern Delaware, DE |
2.5 |
Good |
| Spokane, WA |
2.5 |
Good |
| Springfield, IL |
2.5 |
Good |
| Springfield, MA |
2.5 |
Good |
| Springfield, MO |
2.5 |
Moderate |
| St. Louis (Metro-east), IL |
2.5 |
Good |
| St. Petersburg, FL |
2.5 |
Good |
| Stafford, CT |
2.5 |
Good |
| Stockton, CA |
2.5 |
Good |
| Stow, MA |
2.5 |
Good |
| Stratford, CT |
2.5 |
Good |
| Susquehanna Valley, PA |
2.5 |
Moderate |
| SW Coastal LA, CA |
2.5 |
Good |
| SW San Bernardino, CA |
2.5 |
Good |
| Syracuse, NY |
2.5 |
Good |
| Tacoma-Puyallup, WA |
2.5 |
Good |
| Tallahassee, FL |
2.5 |
Good |
| Tampa, FL |
2.5 |
Good |
| Temecula Vly, CA |
2.5 |
Good |
| Terre Haute, IN |
2.5 |
Good |
| Thibodaux, LA |
2.5 |
Good |
| Thousand Oaks, CA |
2.5 |
Good |
| Torrington, CT |
2.5 |
Good |
| Traverse City, MI |
2.5 |
Good |
| Tri-Cities, TN |
2.5 |
Good |
| Trona, CA |
2.5 |
Good |
| Tulsa, OK |
2.5 |
Moderate |
| Twin Falls, ID |
2.5 |
Good |
| Tyler-Longview-Marshall, TX |
2.5 |
Good |
| Utica, NY |
2.5 |
Good |
| Vacaville, CA |
2.5 |
Moderate |
| Victoria, TX |
2.5 |
Good |
| Victorville, CA |
2.5 |
Good |
| Visalia, CA |
2.5 |
Moderate |
| W San Bernardino M, CA |
2.5 |
Good |
| W San Fernando Vly, CA |
2.5 |
Good |
| Waco-Killeen, TX |
2.5 |
Good |
| Ware - Quabbin Summit, MA |
2.5 |
Good |
| West Buxton, ME |
2.5 |
Good |
| West Greenwich, RI |
2.5 |
Good |
| West Palm Beach, FL |
2.5 |
Good |
| Western Maryland, MD |
2.5 |
Moderate |
| Western Nevada County, CA |
2.5 |
Moderate |
| Westport, CT |
2.5 |
Good |
| White Plains, NY |
2.5 |
Good |
| Winchester, VA |
2.5 |
Moderate |
| Woodland, CA |
2.5 |
Moderate |
| Worcester, MA |
2.5 |
Good |
| York/Chester/Lancaster, SC |
2.5 |
Good |
| Yosemite National Park, CA |
2.5 |
Moderate |
| Youngstown, OH |
2.5 |
Good |
|
