Air quality in USA
Air quality index (AQI⁺) and PM2.5 air pollution in USA • 06:34, Oct 21
California Air Resources Board (CARB)Oregon Department of Environmental QualityCoalition for Clean Air (CCA)LA Unified School DistrictWashington Department of EcologyBay Area Air Quality Management District (BAAQMD)South Coast Air Quality Management District (South Coast AQMD)Spare the Air - Sacramento RegionColorado Department of Public Health & Environment (CDPHE)San Diego County Air Pollution Control District (SDAPCD)Lane Regional Air Protection Agency (LRAPA)North Carolina Department of Environmental Quality (NCDEQ)New York State Department of Environmental Conservation (NYSDEC) Maricopa County Air Monitoring DivisionIdaho Department of Environmental Quality (Idaho DEQ)Massachusetts Department of Environmental Protection (MassDEP)Texas Commission on Environmental Quality (TCEQ)San Joaquin Valley Air Pollution Control DistrictClark County Department of Environment and SustainabilityMinnesota Pollution Control Agency (MPCA)New Jersey Department of Environmental Protection (NJDEP)Illinois EPAAlligator FamilyMetropolitan Washington Council of Governments (MWCOG) anonymous MKE FreshAir CollectiveUTOPIA FiberBrainard Elementary SchoolRichjstuckerCastlebay Lane Elementary SchoolIQAir NA037Travis ThompsonTonyAnonymousDavid Powerdavid sirieixWilton Place ElementaryjunkVan Deene Avenue Elementary SchoolDutch BrosLoyola Village Fine and Performing Arts MagnetucweatherSouth Shores VAPA MagnetNPSJoe CernyLos Feliz STEMM MagnetVan Ness Avenue Elementary SchoolAllesandro Elementary SchoolLanai Road Elementary SchoolAnnandale Elementary SchoolValley View Elementary SchoolLenicia B. Weemes Elementary SchoolEagle Rock Elementary & Magnet Centerwyndham centerHancock Park Elementary SchoolOlympus Cove - UpperSODadGVJonathan RockwaySam BelliveauOakland Unified School DistrictClean Air PartnersJustice Street Academy Charter SchoolWestport Heights ElementaryGrand View Boulevard ElementaryImperial County Department of Toxic Substance and Comite Civico del ValleCleanAIRE NC ActiveSGV - Active San Gabriel Valley Safer TogetherPractical Software, LLCSeattle Children’s HospitalUrban Soil/Tierra Urbanahillmead parkTenafly Nature CenterAdame Communications Inc.Woodland Park ZooClimate First: Replacing Oil and Gas (CFROG)Breathe Southern CaliforniaClean Air LAbdavisSteinach OfficeEnoch HowellDHP Energy at Santa Cat’s 😼House🏡Preh IncBreitenbush Hot SpringsForward StrideTown Arms Apartments, Inc.StripeJoshua Kimzey - Dutch Bros CoffeeAir Aware Air Quality Project YMCAWeingart YMCAArchitectural Medicine LLCSohail AbdiSIERRA CLUBJesus MartinezSJVAirScribe WineryKindred MotorworksAnonymous JokerRividor EHSMcCormick RanchView Ridge Swim & Tennis ClubIQAir Clean Air Experience CenterSBFAquaticsTate MetcalfMemorial Regional HealthHyperbaric Oxygen Clinic of IdahoAnonymous contributor
7 stations sponsored by The Foundation for Clean Air
California Air Resources Board (CARB)Oregon Department of Environmental QualityCoalition for Clean Air (CCA)LA Unified School DistrictWashington Department of EcologyBay Area Air Quality Management District (BAAQMD)South Coast Air Quality Management District (South Coast AQMD)Spare the Air - Sacramento RegionColorado Department of Public Health & Environment (CDPHE)San Diego County Air Pollution Control District (SDAPCD)Lane Regional Air Protection Agency (LRAPA)North Carolina Department of Environmental Quality (NCDEQ)New York State Department of Environmental Conservation (NYSDEC) Maricopa County Air Monitoring DivisionIdaho Department of Environmental Quality (Idaho DEQ)Massachusetts Department of Environmental Protection (MassDEP)Texas Commission on Environmental Quality (TCEQ)San Joaquin Valley Air Pollution Control DistrictClark County Department of Environment and SustainabilityMinnesota Pollution Control Agency (MPCA)New Jersey Department of Environmental Protection (NJDEP)Illinois EPAAlligator FamilyMetropolitan Washington Council of Governments (MWCOG) anonymous MKE FreshAir CollectiveUTOPIA FiberBrainard Elementary SchoolRichjstuckerCastlebay Lane Elementary SchoolIQAir NA037Travis ThompsonTonyAnonymousDavid Powerdavid sirieixWilton Place ElementaryjunkVan Deene Avenue Elementary SchoolDutch BrosLoyola Village Fine and Performing Arts MagnetucweatherSouth Shores VAPA MagnetNPSJoe CernyLos Feliz STEMM MagnetVan Ness Avenue Elementary SchoolAllesandro Elementary SchoolLanai Road Elementary SchoolAnnandale Elementary SchoolValley View Elementary SchoolLenicia B. Weemes Elementary SchoolEagle Rock Elementary & Magnet Centerwyndham centerHancock Park Elementary SchoolOlympus Cove - UpperSODadGVJonathan RockwaySam BelliveauOakland Unified School DistrictClean Air PartnersJustice Street Academy Charter SchoolWestport Heights ElementaryGrand View Boulevard ElementaryImperial County Department of Toxic Substance and Comite Civico del ValleCleanAIRE NC ActiveSGV - Active San Gabriel Valley Safer TogetherPractical Software, LLCSeattle Children’s HospitalUrban Soil/Tierra Urbanahillmead parkTenafly Nature CenterAdame Communications Inc.Woodland Park ZooClimate First: Replacing Oil and Gas (CFROG)Breathe Southern CaliforniaClean Air LAbdavisSteinach OfficeEnoch HowellDHP Energy at Santa Cat’s 😼House🏡Preh IncBreitenbush Hot SpringsForward StrideTown Arms Apartments, Inc.StripeJoshua Kimzey - Dutch Bros CoffeeAir Aware Air Quality Project YMCAWeingart YMCAArchitectural Medicine LLCSohail AbdiSIERRA CLUBJesus MartinezSJVAirScribe WineryKindred MotorworksAnonymous JokerRividor EHSMcCormick RanchView Ridge Swim & Tennis ClubIQAir Clean Air Experience CenterSBFAquaticsTate MetcalfMemorial Regional HealthHyperbaric Oxygen Clinic of IdahoAnonymous contributor
7 stations sponsored by The Foundation for Clean Air
Live most polluted city ranking
Real-time USA most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Kendall | 158 | |
| 2 | Toledo | 157 | |
| 3 | Burns | 127 | |
| 4 | Inchelium | 123 | |
| 5 | Peaceful Valley | 123 | |
| 6 | Sandpoint | 121 | |
| 7 | Little Rock | 95 | |
| 8 | Harney | 92 | |
| 9 | Macon-Bibb County | 92 | |
| 10 | Norridge | 88 |
2025 USA most polluted city
| Cudahy, California | 61 |
Live cleanest city ranking
Real-time USA cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | East Haven | 1 | |
| 2 | Anacortes | 2 | |
| 3 | Chena Ridge | 2 | |
| 4 | Kettleman City | 2 | |
| 5 | Goldstream | 3 | |
| 6 | Hermosa Beach | 3 | |
| 7 | Solana Beach | 3 | |
| 8 | Badger | 4 | |
| 9 | Garfield County | 4 | |
| 10 | San Juan Capistrano | 4 |
2025 USA cleanest city
| Lihue, Hawaii | 8 |
2025 USA air quality
2025 country air quality average
How polluted is USA?
In 2025 in USA, the annual PM2.5 concentration was 1.5 times the WHO annual PM2.5 guideline.
2025 AQI⁺ country ranking
Which country had the worst air quality in 2025?
Worldwide PM2.5 ranking
2025 USA global rank in air pollution
120/143
Wildfires in USA
Real-time information
Active fires
8
Learn more about global air quality
Which is the most polluted state in USA?
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Guam
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
