Air quality in USA
Air quality index (AQI⁺) and PM2.5 air pollution in USA • 08:08, Oct 10
California Air Resources Board (CARB)Coalition 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)Florida Department of Environmental Protection (Florida DEP)New York State Department of Environmental Conservation (NYSDEC) North Carolina Department of Environmental Quality (NCDEQ)Lane Regional Air Protection Agency (LRAPA)Maricopa County Air Monitoring DivisionMassachusetts Department of Environmental Protection (MassDEP)Idaho Department of Environmental Quality (Idaho DEQ)Texas Commission on Environmental Quality (TCEQ)San Joaquin Valley Air Pollution Control DistrictMinnesota Pollution Control Agency (MPCA)New Jersey Department of Environmental Protection (NJDEP)Illinois EPANorthern Nevada Public Health Air Quality Management DivisionAlligator FamilyMetropolitan Washington Council of Governments (MWCOG) anonymous UTOPIA FiberMKE FreshAir CollectiveBrainard Elementary SchoolRichjstuckerCastlebay Lane Elementary School037Travis 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 RockwayOakland Unified School DistrictSam BelliveauJustice Street Academy Charter SchoolWestport Heights ElementaryGrand View Boulevard ElementaryClean Air PartnersIQAir NAImperial County Department of Toxic Substance and Comite Civico del ValleCleanAIRE NCSafer 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 LASteinach OfficebdavisEnoch 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 CLUBILD HPJesus MartinezScribe WinerySJVAirKindred MotorworksAnonymous JokerRividor EHSMcCormick RanchIQAir Clean Air Experience CenterView Ridge Swim & Tennis ClubSBFAquaticsTate MetcalfMemorial Regional HealthHyperbaric Oxygen Clinic of IdahoAnonymous contributor
8 stations sponsored by The Foundation for Clean Air
California Air Resources Board (CARB)Coalition 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)Florida Department of Environmental Protection (Florida DEP)New York State Department of Environmental Conservation (NYSDEC) North Carolina Department of Environmental Quality (NCDEQ)Lane Regional Air Protection Agency (LRAPA)Maricopa County Air Monitoring DivisionMassachusetts Department of Environmental Protection (MassDEP)Idaho Department of Environmental Quality (Idaho DEQ)Texas Commission on Environmental Quality (TCEQ)San Joaquin Valley Air Pollution Control DistrictMinnesota Pollution Control Agency (MPCA)New Jersey Department of Environmental Protection (NJDEP)Illinois EPANorthern Nevada Public Health Air Quality Management DivisionAlligator FamilyMetropolitan Washington Council of Governments (MWCOG) anonymous UTOPIA FiberMKE FreshAir CollectiveBrainard Elementary SchoolRichjstuckerCastlebay Lane Elementary School037Travis 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 RockwayOakland Unified School DistrictSam BelliveauJustice Street Academy Charter SchoolWestport Heights ElementaryGrand View Boulevard ElementaryClean Air PartnersIQAir NAImperial County Department of Toxic Substance and Comite Civico del ValleCleanAIRE NCSafer 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 LASteinach OfficebdavisEnoch 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 CLUBILD HPJesus MartinezScribe WinerySJVAirKindred MotorworksAnonymous JokerRividor EHSMcCormick RanchIQAir Clean Air Experience CenterView Ridge Swim & Tennis ClubSBFAquaticsTate MetcalfMemorial Regional HealthHyperbaric Oxygen Clinic of IdahoAnonymous contributor
8 stations sponsored by The Foundation for Clean Air
Live most polluted city ranking
Real-time USA most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  New Canaan | 165 | |
| 2 | Mariposa County | 103 | |
| 3 | Montgomery County | 88 | |
| 4 | Channelview | 80 | |
| 5 | West University Place | 80 | |
| 6 | Jacinto City | 78 | |
| 7 | Galena Park | 77 | |
| 8 | Fort Worth | 74 | |
| 9 | Harris | 72 | |
| 10 | Dallas | 71 |
2025 USA most polluted city
| Cudahy, California | 61 |
Live cleanest city ranking
Real-time USA cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Anacortes | 1 | |
| 2 | East Longmeadow | 2 | |
| 3 | Lawrence County | 2 | |
| 4 | Sweet Home | 2 | |
| 5 | Waimea, Hawaii County | 2 | |
| 6 | Bellingham | 3 | |
| 7 | Ellensburg | 3 | |
| 8 | Essex | 3 | |
| 9 | Lincoln | 3 | |
| 10 | Martha Lake | 3 |
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
7
Learn more about global air quality
Which is the most polluted state in USA?
- Alabama
- Alaska
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- California
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- Delaware
- District of Columbia
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- Guam
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- New Hampshire
- New Jersey
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- South Carolina
- South Dakota
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- Washington
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