America's 50 Cleanest Cities

Discover the top 50 US cities with the best air quality today. These cities consistently maintain low pollution levels, offering cleaner air and healthier living conditions for residents and visitors.

10
Best AQI Today
Honolulu, HI
29
States Represented
Across the nation
38
Average AQI
Top 50 cities

States with Most Clean Cities in Top 10

Florida2 citiesNorth Carolina2 citiesHawaii1 cityOregon1 cityTexas1 city

Top 50 Cleanest Cities

Cities ranked by current air quality index

#1
HonoluluHI
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 10
#2
PortlandOR
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 31
#3
DallasTX
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#4
MiamiFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#5
New YorkNY
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#6
PeoriaIL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#7
GreensboroNC
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#8
DurhamNC
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 35
#9
SacramentoCA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#10
TampaFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#11
Fort LauderdaleFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#12
St. PetersburgFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#13
BuffaloNY
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#14
RaleighNC
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#15
Jersey CityNJ
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#16
Las VegasNV
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 36
#17
Fort WorthTX
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 37
#18
Atlantic CityNJ
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 37
#19
LexingtonKY
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 37
#20
AnchorageAK
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 37
#21
PortlandME
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 37
#22
El PasoTX
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 38
#23
Corpus ChristiTX
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 38
#24
NorfolkVA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 38
#25
WilmingtonDE
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 38
#26
San JoseCA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#27
ColumbusOH
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#28
TucsonAZ
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#29
LouisvilleKY
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#30
MontgomeryAL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#31
ColumbiaSC
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#32
Sioux FallsSD
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 39
#33
VancouverWA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#34
BostonMA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#35
RenoNV
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#36
Oklahoma CityOK
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#37
TulsaOK
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#38
WichitaKS
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 40
#39
TallahasseeFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 41
#40
SarasotaFL
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 41
#41
SeattleWA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 41
#42
Des MoinesIA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 41
#43
White PlainsNY
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 42
#44
Colorado SpringsCO
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 42
#45
Baton RougeLA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 42
#46
San DiegoCA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 44
#47
PhiladelphiaPA
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 44
#48
NewarkNJ
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 44
#49
MesaAZ
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 44
#50
Santa FeNM
Good - Air quality is satisfactory, and air pollution poses little or no risk.
AQI 44

Why These Cities Have Clean Air

  • Low Industrial Density
    Fewer factories and manufacturing facilities reduce emissions
  • Favorable Geography
    Wind patterns and terrain help disperse pollutants naturally
  • Strong Environmental Policies
    Strict regulations on emissions and vehicle standards
  • Green Infrastructure
    Trees, parks, and vegetation help filter air naturally

Health Benefits of Clean Air

  • Improved Respiratory Health
    Lower rates of asthma, bronchitis, and lung disease
  • Better Cardiovascular Health
    Reduced risk of heart disease and stroke
  • Enhanced Child Development
    Better lung development and cognitive function in children
  • Increased Life Expectancy
    Living in clean air areas is linked to longer lifespans

Explore More Air Quality Data

Most Polluted Cities
Areas with elevated AQI
Browse by State
All cities organized
Health Guide
For sensitive groups

About This Data

Rankings are based on real-time Air Quality Index (AQI) data from EPA monitoring stations via the AirNow network. The AQI measures five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Lower AQI values indicate cleaner air. Data is updated hourly as new measurements become available.