AirNow · Updated
Air quality today
The Air Quality Index (AQI) right now and the forecast for cities across the U.S. Under 50 is good; over 100 is unhealthy for sensitive groups.
Worst air right now
Denver-Boulder, CO
coarse particles (PM10) · 9:00 MDT149 · Unhealthy for Sensitive GroupsBorder Area, CA
coarse particles (PM10) · 8:00 PDT145 · Unhealthy for Sensitive GroupsCalexico, CA
coarse particles (PM10) · 8:00 PDT112 · Unhealthy for Sensitive GroupsImperial Valley, CA
coarse particles (PM10) · 8:00 PDT112 · Unhealthy for Sensitive GroupsFresno, CA
coarse particles (PM10) · 8:00 PDT107 · Unhealthy for Sensitive GroupsHanford, CA
coarse particles (PM10) · 8:00 PDT105 · Unhealthy for Sensitive GroupsPhoenix, AZ
coarse particles (PM10) · 8:00 MST101 · Unhealthy for Sensitive GroupsCoachella Vly, CA
fine particles (PM2.5) · 8:00 PDT100 · ModerateElko, NV
coarse particles (PM10) · 8:00 PDT93 · ModerateMetro Riverside CO, CA
coarse particles (PM10) · 8:00 PDT92 · ModerateMon Valley Area, PA
fine particles (PM2.5) · 11:00 EDT88 · ModerateLake Sugema, IA
fine particles (PM2.5) · 10:00 CDT87 · Moderate
coarse particles (PM10) · 9:00 MDT149 · Unhealthy for Sensitive GroupsBorder Area, CA
coarse particles (PM10) · 8:00 PDT145 · Unhealthy for Sensitive GroupsCalexico, CA
coarse particles (PM10) · 8:00 PDT112 · Unhealthy for Sensitive GroupsImperial Valley, CA
coarse particles (PM10) · 8:00 PDT112 · Unhealthy for Sensitive GroupsFresno, CA
coarse particles (PM10) · 8:00 PDT107 · Unhealthy for Sensitive GroupsHanford, CA
coarse particles (PM10) · 8:00 PDT105 · Unhealthy for Sensitive GroupsPhoenix, AZ
coarse particles (PM10) · 8:00 MST101 · Unhealthy for Sensitive GroupsCoachella Vly, CA
fine particles (PM2.5) · 8:00 PDT100 · ModerateElko, NV
coarse particles (PM10) · 8:00 PDT93 · ModerateMetro Riverside CO, CA
coarse particles (PM10) · 8:00 PDT92 · ModerateMon Valley Area, PA
fine particles (PM2.5) · 11:00 EDT88 · ModerateLake Sugema, IA
fine particles (PM2.5) · 10:00 CDT87 · Moderate
By state
AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaPuerto RicoRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
What the numbers mean
0–50Good
51–100Moderate
101–150Unhealthy for Sensitive Groups
151–200Unhealthy
201–300Very Unhealthy
301+Hazardous
Readings and forecasts from AirNow (the EPA and state, local and tribal air agencies), checked every 30 minutes. Current readings are preliminary.