🌿 CleanAirData
2026 Health Guide

Safest US Cities for Asthma

Breathing shouldn't be a struggle. We identified cities with the fewest asthma triggers, lowest particulate matter, and most stable air quality year-round.

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#1
97
🫁

San Luis Obispo, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#2
97
🫁

Pueblo, CO

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#3
97
🫁

Hawaiian Ocean View, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#4
97

Hilo, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#5
97

Kailua, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#6
97

Kihei, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#7
97

Mountain View, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#8
97

Naalehu, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#9
97

Not in a city, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#10
97

Grantsville, MD

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#11
97

Portland, OR

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#12
97

Bennington, VT

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#13
97

Bremerton, WA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#14
97

Vancouver, WA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A+
#15
97

Laramie, WY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#16
96

Wenden, AZ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#17
96

Auburn, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#18
96

Carmel Valley Village, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#19
96

Kahului, HI

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#20
96

Chicopee, MA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#21
96

Weymouth, MA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#22
96

Peterborough (Peterboro), NH

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#23
96

Eugene, OR

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#24
96

Tualatin, OR

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#25
96

New Milford, PA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#26
96

Tunkhannock, PA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#27
96

Hurricane, UT

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#28
96

Underhill (Town of), VT

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#29
96

Ellensburg, WA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#30
95

Apache Junction, AZ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#31
95

Carpinteria, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#32
95

Concord, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#33
95

Sebastopol, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#34
95

Fall River, MA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#35
95

Pittsfield, MA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#36
95

Londonderry, NH

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#37
95

Las Cruces, NM

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#38
95

Enterprise, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#39
95

Providence, RI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#40
94

Lancaster, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#41
94

Orcutt, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#42
94

Cornwall, CT

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#43
94

Melbourne, FL

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#44
94

Beltsville, MD

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#45
94

Cloquet, MN

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#46
94

Boulder City, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#47
94

Henderson, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#48
94

Jean, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#49
94

Mesquite, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A
#50
94

Hillsboro, OR

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#51
94

Pierre, SD

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#52
94

Lubbock, TX

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#53
94

Bellingham, WA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#54
94

Kekoskee, WI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#55
94

Not in a city, WY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#56
93

Not in a city, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#57
93

Pleasanton, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#58
93

Alamosa, CO

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#59
93

Grand Junction, CO

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#60
93

Groton, CT

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#61
93

Not in a city, MD

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#62
93

Portsmouth, NH

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A
#63
93

Millville, NJ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#64
93

East Syracuse, NY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#65
93

Casper, WY

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A-
#66
92

Ashland, AL

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#67
92

Tuscaloosa, AL

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A-
#68
92

Atascadero, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#69
92

Atlantic City, NJ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#70
92

Reno, NV

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#71
92

Painesville, OH

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#72
92

Kingsport, TN

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#73
92

Tacoma, WA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#74
92

Cody, WY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#75
92

Rock Springs, WY

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A-
#76
92

Worland, WY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#77
91

Anchorage, AK

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#78
91

Arroyo Grande, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#79
91

Campo, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#80
91

Grass Valley, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#81
91

King City, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#82
91

Lompoc, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#83
91

Hawaii Volcanoes National Park, HI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#84
91

Pikeville, KY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#85
91

Not in a city, MN

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A-
#86
91

Bryson City (RR name Bryson), NC

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#87
91

Spruce Pine, NC

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#88
91

Galloway (Township of), NJ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#89
91

Union City, NJ

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#90
91

Albuquerque, NM

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#91
91

Spring Valley, NV

"Exceptional air quality for sensitive groups. Minimal pollution events reported."

Asthma Safety Grade: A-
#92
91

Rochester, NY

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#93
91

Altoona, PA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#94
91

Farrell, PA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#95
91

Pleasant Prairie, WI

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#96
90

Big Pine, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#97
90

Live Oak, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#98
90

Ojai, CA

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#99
90

Boulder, CO

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
#100
90

Colorado Springs, CO

"Exceptional air quality for sensitive groups. Zero unhealthy days reported."

Asthma Safety Grade: A-
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