AirNow Interactive Map - gov.epa.gispub

AirNow Interactive Map. The map includes data for air quality monitors in the U.S., Canada, and Mexico. Find U.S. Embassies and Consulates data here. InteractiveMapofAirQuality Info Monitors Contours Boundaries OzoneandPM(PM2.5andPM10) Ozone PM(PM2.5andPM10) PM2.5 PM10 OzoneandPM(PM2.5andPM10) Ozone PM(PM2.5andPM10) PM2.5 PM10 Forecast–Today Forecast–Tomorrow OzoneandPM(PM2.5andPM10) Theabovelayerisnotavailableforthespecifieddate. Ozone Theabovelayerisnotavailableforthespecifieddate. PM(PM2.5andPM10) Theabovelayerisnotavailableforthespecifieddate. PM2.5 Theabovelayerisnotavailableforthespecifieddate. PM10 Theabovelayerisnotavailableforthespecifieddate. Showgreencontours Showgreencontours OzoneandPM(PM2.5andPM10) Ozone PM2.5 OzoneandPM(PM2.5andPM10) Ozone PM2.5 Forecast–Today Forecast–Tomorrow OzoneandPM(PM2.5andPM10) Theabovelayerisnotavailableforthespecifieddate. Ozone Theabovelayerisnotavailableforthespecifieddate. PM(PM2.5andPM10) Theabovelayerisnotavailableforthespecifieddate. PM2.5 Theabovelayerisnotavailableforthespecifieddate. PM10 Theabovelayerisnotavailableforthespecifieddate. Contoursnotyetavailableforthistime. EPATribalAreas NationalParkServiceBoundaries U.S.AirQualityIndex Good(0-50) Moderate(51-100) UnhealthyforSensitiveGroups(101-150) Unhealthy(151-200) VeryUnhealthy(201-300) Hazardous(301-500) NoData OzoneandPM(PM2.5andPM10) Nolegend Note:Valuesabove500areconsideredBeyondtheAQI.FollowrecommendationsfortheHazardouscategory. Additionalinformationonreducingexposuretoextremelyhighlevelsofparticlepollutionisavailable here. here. Dataupdated Alert AirNowisexperiencinghightrafficduetoCaliforniawildfires.Mapsmaybeslowtoload. NowCastAQI,Last24Hours ArchiveDate: Overview Current Forecast Loops Archive AirNowInteractiveMap Themapincludesdataforairqualitymonitors intheU.S.,Canada,andMexico.Find U.S.EmbassiesandConsulatesdatahere. Allreadingsarepreliminary,unvalidated,and subjecttochange. SeemoreinformationabouttheAQI. SeemoreinformationabouttheNowCastAQI. Tousethismap: SelectatabforCurrent, Forecast,Loops,orArchive. Selectlayersfromthedrop-downpanels.Onmobile,usethe 3-linemenuintheuppercorner. SelectgeographicoutlinesfromtheBOUNDARIESdrop-down box.Someboundariesappearonlywhenthemapiszoomed. Clickwithinaboundaryonamaptogetadditionalinformation. ClickLEGENDtodisplaytheAQIlegend."Nodata" meansnothingwasreportedforthemostrecent hour. ClickBASEMAPtochooseadifferentbackgroundmap. Refreshyourscreenperiodicallytoseethemostrecentdata. Themapopensinanewtab.Togoback,clickontheAirNow tabortheAirNowlogo. CurrentAirQuality “OzoneandPM”referstodataforOzoneplusPM2.5 plusPM10.Eachhour,thehighestNowCastAQI amongthese3pollutantsisdisplayedforeachmonitorand eachcontour. ClickonamonitortorevealNowCastAQIandraw concentrationdata. Click“PlotData”toseeanAQIbarchartanda concentrationlinegraph.Notethatthelinegraph isavailableforsinglepollutantlayersonly (i.e.‘ozone’or‘PM2.5’). Downloadimagesanddatafromthechart’s3-barmenuin thetopright. Thesearchboxwillacceptaddress,zipcode,state,place name,monitornameormonitorID. Datausuallyupdatesduringthesecondhalfofthehour, andupdatedcontourdatawilllagbehindmonitordata. Refreshyourscreenperiodicallytoseethemostrecentdata. Contouredareasareapproximate.Readaboutthe interpolationmethodusedtocreatethe contourmaps. AirQualityForecast Theairqualityforecastisapredictionofthe day’soverallAQIissuedbystateandlocalair qualityforecasters.Eachdotonthismaprepresents acityorreportingareathatissuesaforecast. Readmoreabouttheairqualityforecast. Clickonadottoseeforecastinfoforseparate pollutantsifavailable. Tomorrow’sforecastisavailableinmostareasby 4p.m.localtime. Loops UsetheTimeSlidertoloopthroughNowCastAQI dataforthelast24hours.Usethepausebutton tostopatanyhour.Usethearrowstomovethrough hoursoneatatime. ClickonamonitortorevealNowCastAQIandraw concentrationdata. “OzoneandPM”referstodataforOzoneplusPM2.5 plusPM10.Eachhour,thehighestNowCastAQIamong these3pollutantsisdisplayedforeachmonitorand eachcontour. Contouredareasareapproximate.Readaboutthe interpolationmethodusedtocreatethe contourmaps. Archive UsetheArchiveDatepickertochoose adate.Cyclethroughyearsunderthecalendar. Cyclethroughmonthsabovethecalendar. ArchivesshowtheAQI forthatdate.Forparticlepollution,thisis theaverageof24hourlyvalues.Forozone, thisisthemaximum8-hourozoneaveragein24hours. Somearchivesgobackfurtherthanothers.You willseeamessageifthepollutantforthe dateyouchoseisnotavailable. Duetoachangeinmethodology,somecontours arenotcroppedalongtheU.S.coastline. Contouredareasareapproximate.Readaboutthe interpolationmethodusedtocreatethe contourmaps. Thedatafeedforthearchivesprovidesthe monitorID,butmonitornameandcitynameare notavailable. “OzoneandPM”referstodataforOzoneplusPM2.5 plusPM10.Eachhour,thehighestNowCastAQIamong these3pollutantsisdisplayedforeachmonitorand eachcontour.