AIR QUALITY • COUNTRY

Air Quality in United States

Air quality can vary considerably across United States because weather, local emissions, geography and regional transport can change from place to place and from day to day. AirQualityIndex.org monitors air-quality information from more than 25,000 monitoring locations worldwide. This country comparison page currently lists 170 major cities and locations across United States, including Washington, Los Angeles, New York, Chicago. Each listed location links to its own detailed air-quality page, while locations outside this comparison catalogue can be explored through Air Quality Near Me.

Use the search and filters to focus on a city type or AQI category, then sort the table by AQI, PM2.5, PM10, ozone (O₃), nitrogen dioxide (NO₂), data source or update time. Select any city to open its detailed air-quality page. Current values may include model-derived estimates and, where enabled, monitoring-station information; the displayed source should be considered when interpreting the results. The comparison catalogue is intentionally smaller than the wider AirQualityIndex.org monitoring-location database so the page remains fast and easy to use.

MONITORING COVERAGE

170 monitoring locations represented across United States

The markers show the geographic spread of locations in this country comparison catalogue. The wider AirQualityIndex.org data system covers more than 25,000 monitoring locations globally.

Washington · CapitalLos Angeles · Major cityNew York · Major cityChicago · Major cityHouston · Major cityNew York City · Major cityBrooklyn · Major cityQueens · Major cityPhoenix · Major cityPhiladelphia · Major citySan Antonio · Major cityManhattan · Major citySan Diego · Major cityThe Bronx · Major cityDallas · Major cityJacksonville · Major cityFort Worth · Major citySan Jose · Major cityAustin · Major cityColumbus · Major cityCharlotte · Major cityIndianapolis · Major citySan Francisco · Major citySeattle · Major cityDenver · Major cityNashville · Major cityOklahoma City · Major cityEl Paso · Major cityBoston · Major cityPortland · Major cityDetroit · Major cityLas Vegas · Major cityNew South Memphis · Major cityMemphis · Major cityLouisville · Major cityBaltimore · Major citySouth Boston · Major cityAlbuquerque · Major cityMilwaukee · Major cityTucson · Major cityFresno · Major citySacramento · Major cityAtlanta · Major cityMiami · Major cityOmaha · Major cityRaleigh · Major cityKansas City · Major cityLong Beach · Major cityMesa · Major cityStaten Island · Major cityColorado Springs · Major cityVirginia Beach · Major cityOakland · Major cityTampa · Major cityTulsa · Major cityMinneapolis · Major cityWichita · Major cityArlington · Major cityBakersfield · Major cityCleveland · Major cityNew Orleans · Major cityAurora · Major cityHonolulu · Major cityAnaheim · Major cityWest Raleigh · Major cityOrlando · Major cityLexington · Major cityRiverside · Major cityCorpus Christi · Major cityLexington-Fayette · Major cityCincinnati · Major citySanta Ana · Major cityStockton · Major cityPittsburgh · Major citySaint Paul · Major cityLincoln · Major cityAnchorage · Major cityMeads · Major cityHenderson · Major cityGreensboro · Major cityPlano · Major cityNewark · Major cityMadison · Major citySt. Louis · Major cityChula Vista · Major cityToledo · Major cityJersey City · Major cityReno · Major cityChandler · Major cityFort Wayne · Major cityBuffalo · Major cityDurham · Major citySt. Petersburg · Major cityIrvine · Major cityLaredo · Major cityLubbock · Major cityGilbert · Major cityTri-Cities · Major cityWinston-Salem · Major cityGlendale · Major cityNorfolk · Major cityHialeah · Major cityGarland · Major cityScottsdale · Major cityIrving · Major cityBoise · Major cityChesapeake · Major cityNorth Las Vegas · Major cityFremont · Major citySpokane · Major cityBaton Rouge · Major cityUpper West Side · Major cityRichmond · Major cityParadise · Major cityTacoma · Major cityJamaica · Major citySan Bernardino · Major citySalt Lake City · Major cityHuntsville · Major cityDes Moines · Major cityFontana · Major cityModesto · Major cityRochester · Major cityMaryvale · Major cityOxnard · Major cityWorcester · Major cityMoreno Valley · Major cityLittle Rock · Major cityFayetteville · Major cityHuntington Beach · Major cityTallahassee · Major cityYonkers · Major cityCypress · Major cityAmarillo · Major cityAkron · Major cityVancouver · Major cityBirmingham · Major cityMontgomery · Major cityGrand Rapids · Major cityPeoria · Major cityProvidence · Major cityKnoxville · Major citySunrise Manor · Major cityGrand Prairie · Major cityShreveport · Major cityBrownsville · Major cityOverland Park · Major cityNewport News · Major cityMobile · Major cityFort Lauderdale · Major citySanta Clarita · Major cityChattanooga · Major cityEast Flatbush · Major citySpring Valley · Major citySanta Rosa · Major cityEugene · Major cityTempe · Major cityOceanside · Major citySalem · Major cityGarden Grove · Major cityRancho Cucamonga · Major cityCape Coral · Major cityEast New York · Major citySioux Falls · Major cityOntario · Major cityFort Collins · Major citySpringfield · Major cityHollywood · Major cityElk Grove · Major cityClarksville · Major city
PAST 12 MONTHS

Historical & seasonal air-quality pattern

Comparable monthly historical values are temporarily unavailable for United States. The chart will populate automatically when the historical model dataset is available.

Sources: Open-Meteo Air Quality API / Copernicus Atmosphere Monitoring Service (CAMS)
LATEST COVERAGE

Related air-quality news and articles

Recent country-specific air-quality headlines are temporarily unavailable. Please check again shortly.

Recent external headlines are retrieved from Google News RSS and filtered for United States plus AQI, air quality or air pollution. Results are cached and linked to the news result/publisher.
LIVE CITY COMPARISON

Compare air quality across United States

The table below brings current AQI and major pollutant indicators together for the locations in this country comparison catalogue. Search for a city, filter by location type or AQI category, or select any column heading to rank the results. Each city name opens its detailed air-quality page for additional context, source information and related resources.

170listed locations
—with current AQI
Livecached comparison
50rows per page
⌕
Click a column heading to sort
Location ↕AQI ↕Status ↕PM2.5 ↕PM10 ↕O₃ ↕NO₂ ↕Data ↕Updated ↕
Didn’t find your city?Check air quality around your location using our location-based tool.Check Air Quality Near Me →

Explore nearby countries

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Explore AirQualityIndex.org

Air Quality Near MeCheck approximate local air quality.AQI CalculatorLearn how AQI values are calculated.Air Quality ExplainedUnderstand AQI categories and pollutants.Compare CitiesCompare air-quality values across cities.Global Real-Time StatusExplore cities worldwide.Data & MethodologySee sources and methodology.
Data sources and methods are identified within the relevant sections of this page. AirQualityIndex.org gratefully acknowledges OpenAQ for supporting broad access to air-quality information.