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AQI Calculations on 04/09/2026 1:00AM - 1:00AM

The EPA (Environmental Protection Agency) developed the AQI (Air Quality Index) to make reading ambient air data more understandable to the general public. When ambient air data is collected, the numbers are converted from their concentration levels into numbers on a scale. That scale is the pollutant's AQI value. (Click here for a more detailed description of the AQI scale). Below is a list of all of the latest AQI values collected.


Due to limited system resources and high volume, today's AQI calculations can no longer be sorted by columns. For a CSV file of these data, updated hourly, click here.


All data are collected real-time and have not been corrected nor validated.

Time *
(MST)
 Monitoring Location Pollutant Interval
(Hr)
 Air Quality AQI Avg.
1:00 AM ACAD O3 8 Good 34 37 PPB
1:00 AM ACC PM10 24 Good 19 21 µg/m3
1:00 AM ACC PM2.5 24 Good 21 3 µg/m3
1:00 AM ADB PM10 24 Good 49 53 µg/m3
1:00 AM ADB PM2.5 24 Good 25 4 µg/m3
1:00 AM ALA PM10 24 Good 23 25 µg/m3
1:00 AM ALA PM2.5 24 Good 18 3 µg/m3
1:00 AM ASPN O3 8 Good 38 41 PPB
1:00 AM ASPN2 PM10 24 Good 13 14 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 12 2 µg/m3
1:00 AM AURE O3 8 Good 38 41 PPB
1:00 AM BHWK O3 8 Good 43 46 PPB
1:00 AM BOU PM10 24 Good 29 31 µg/m3
1:00 AM BOU PM2.5 24 Good 20 3 µg/m3
1:00 AM BOUR O3 8 Good 35 38 PPB
1:00 AM CAMP NO2 1 Good 9 10 PPB
1:00 AM CAMP NO2 1 Good 9 10 PPB
1:00 AM CAMP O3 8 Good 31 33 PPB
1:00 AM CAMP PM10 24 Good 16 17 µg/m3
1:00 AM CAMP PM2.5 24 Good 22 3 µg/m3
1:00 AM CAN PM10 24 Good 18 19 µg/m3
1:00 AM CAN PM2.5 24 Good 15 2 µg/m3
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CASA NO2 1 Good 9 10 PPB
1:00 AM CASA O3 8 Good 31 34 PPB
1:00 AM CASA PM10 24 Good 21 23 µg/m3
1:00 AM CASA PM2.5 24 Good 17 3 µg/m3
1:00 AM CCOL PM10 24 Good 22 24 µg/m3
1:00 AM CCOL PM2.5 24 Good 18 3 µg/m3
1:00 AM CHAT O3 8 Good 34 37 PPB
1:00 AM CHAT PM10 24 Good 17 18 µg/m3
1:00 AM CHAT PM2.5 24 Good 14 2 µg/m3
1:00 AM CTZ O3 8 Good 31 33 PPB
1:00 AM DELT PM10 24 Good 21 23 µg/m3
1:00 AM DELT PM2.5 24 Good 17 3 µg/m3
1:00 AM DELT PM2.5 24 Good 17 3 µg/m3
1:00 AM EVG O3 8 Good 40 43 PPB
1:00 AM FOS NO2 1 Good 3 3 PPB
1:00 AM FOS O3 8 Good 36 39 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 40 43 PPB
1:00 AM FTCF PM10 24 Good 28 30 µg/m3
1:00 AM FTCF PM2.5 24 Good 27 4 µg/m3
1:00 AM FTCW O3 8 Good 40 43 PPB
1:00 AM GJPB PM10 24 Good 8 9 µg/m3
1:00 AM GJPB PM2.5 24 Good 17 3 µg/m3
1:00 AM GREH PM10 24 Good 32 35 µg/m3
1:00 AM GREH PM2.5 24 Good 35 6 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 41 44 PPB
1:00 AM I25DEN CO 8 Good 3 0.3 PPM
1:00 AM I25DEN NO2 1 Good 14 15 PPB
1:00 AM I25DEN PM10 24 Good 26 28 µg/m3
1:00 AM I25DEN PM2.5 24 Good 22 3 µg/m3
1:00 AM I25GLO NO2 1 Good 23 24 PPB
1:00 AM I25GLO PM10 24 Good 26 28 µg/m3
1:00 AM I25GLO PM2.5 24 Good 21 3 µg/m3
1:00 AM LAST NO2 1 Good 2 2 PPB
1:00 AM LAST O3 8 Good 37 40 PPB
1:00 AM LMB PM10 24 Good 22 24 µg/m3
1:00 AM LMB PM2.5 24 Good 21 3 µg/m3
1:00 AM LNGM PM10 24 Good 31 34 µg/m3
1:00 AM LNGM PM2.5 24 Good 27 4 µg/m3
1:00 AM MAN O3 8 Good 40 43 PPB
1:00 AM MFP NO2 1 Good 2 2 PPB
1:00 AM MFP O3 8 Good 43 46 PPB
1:00 AM NJH PM10 24 Good 19 21 µg/m3
1:00 AM NJH PM2.5 24 Good 19 3 µg/m3
1:00 AM NREL O3 8 Good 38 41 PPB
1:00 AM PAG PM10 24 Good 9 10 µg/m3
1:00 AM PAG PM2.5 24 Good 12 2 µg/m3
1:00 AM PAL O3 8 Good 40 43 PPB
1:00 AM PFS PM10 24 Good 22 24 µg/m3
1:00 AM PFS PM2.5 24 Good 22 3 µg/m3
1:00 AM PMS PM2.5 24 Good 25 4 µg/m3
1:00 AM PWES O3 8 Good 35 38 PPB
1:00 AM RFN NO2 1 Good 1 1 PPB
1:00 AM RFN O3 8 Good 41 44 PPB
1:00 AM RIFLO3 O3 8 Good 21 23 PPB
1:00 AM SSMB PM10 24 Good 8 9 µg/m3
1:00 AM SSMB PM2.5 24 Good 12 2 µg/m3
1:00 AM TEL PM10 24 Good 12 13 µg/m3
1:00 AM TEL PM2.5 24 Good 11 2 µg/m3
1:00 AM TIM NO2 1 Good 5 5 PPB
1:00 AM TIM O3 8 Good 37 40 PPB
1:00 AM TIM PM10 24 Good 27 29 µg/m3
1:00 AM TIM PM2.5 24 Good 22 4 µg/m3
1:00 AM WBY NO2 1 Good 8 9 PPB
1:00 AM WBY NO2 1 Good 8 9 PPB
1:00 AM WBY O3 8 Good 35 38 PPB
1:00 AM WBY PM10 24 Good 29 31 µg/m3
1:00 AM WBY PM2.5 24 Good 26 4 µg/m3

* All data are reported in Mountain Standard Time (MST). During daylight savings time add one hour to the reported hour.