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AQI Calculations on 03/18/2026 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 35 38 PPB
1:00 AM ACC PM10 24 Good 5 5 µg/m3
1:00 AM ACC PM2.5 24 Good 9 1 µg/m3
1:00 AM ADB PM10 24 Good 22 24 µg/m3
1:00 AM ADB PM2.5 24 Good 18 3 µg/m3
1:00 AM ALA PM10 24 Good 17 18 µg/m3
1:00 AM ALA PM2.5 24 Good 19 3 µg/m3
1:00 AM ASPN O3 8 Good 31 33 PPB
1:00 AM ASPN2 PM10 24 Good 18 19 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 16 2 µg/m3
1:00 AM AURE O3 8 Good 34 37 PPB
1:00 AM BOU PM10 24 Good 17 18 µg/m3
1:00 AM BOU PM2.5 24 Good 11 2 µg/m3
1:00 AM BOUR O3 8 Good 42 45 PPB
1:00 AM CAMP NO2 1 Good 5 5 PPB
1:00 AM CAMP NO2 1 Good 5 5 PPB
1:00 AM CAMP O3 8 Good 36 39 PPB
1:00 AM CAMP PM10 24 Good 6 6 µg/m3
1:00 AM CAMP PM2.5 24 Good 13 2 µg/m3
1:00 AM CAN PM10 24 Good 8 9 µg/m3
1:00 AM CAN PM2.5 24 Good 8 1 µg/m3
1:00 AM CASA CO 8 Good 0 0.0 PPM
1:00 AM CASA NO2 1 Good 3 3 PPB
1:00 AM CASA O3 8 Good 39 42 PPB
1:00 AM CASA PM10 24 Good 6 7 µg/m3
1:00 AM CASA PM2.5 24 Good 10 1 µg/m3
1:00 AM CCOL PM10 24 Good 14 15 µg/m3
1:00 AM CCOL PM2.5 24 Good 15 2 µg/m3
1:00 AM CHAT O3 8 Good 37 40 PPB
1:00 AM CHAT PM10 24 Good 6 7 µg/m3
1:00 AM CHAT PM2.5 24 Good 11 1 µg/m3
1:00 AM CTZ O3 8 Good 29 31 PPB
1:00 AM DELT PM10 24 Good 23 25 µg/m3
1:00 AM DELT PM2.5 24 Good 28 5 µg/m3
1:00 AM DELT PM2.5 24 Good 28 5 µg/m3
1:00 AM EVG O3 8 Good 42 45 PPB
1:00 AM FOS NO2 1 Good 2 2 PPB
1:00 AM FOS O3 8 Good 37 40 PPB
1:00 AM FTC CO 8 Good 2 0.2 PPM
1:00 AM FTC O3 8 Good 36 39 PPB
1:00 AM FTCF PM10 24 Good 10 11 µg/m3
1:00 AM FTCF PM2.5 24 Good 18 3 µg/m3
1:00 AM FTCW O3 8 Good 40 43 PPB
1:00 AM GJPB PM10 24 Good 25 27 µg/m3
1:00 AM GJPB PM2.5 24 Good 37 6 µg/m3
1:00 AM GREH PM10 24 Good 9 10 µg/m3
1:00 AM GREH PM2.5 24 Good 20 3 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 34 37 PPB
1:00 AM HLD O3 8 Good 37 40 PPB
1:00 AM I25DEN CO 8 Good 5 0.4 PPM
1:00 AM I25DEN NO2 1 Good 6 6 PPB
1:00 AM I25DEN PM10 24 Good 17 18 µg/m3
1:00 AM I25DEN PM2.5 24 Good 18 3 µg/m3
1:00 AM I25GLO NO2 1 Good 16 17 PPB
1:00 AM I25GLO PM10 24 Good 20 22 µg/m3
1:00 AM I25GLO PM2.5 24 Good 18 3 µg/m3
1:00 AM LAST NO2 1 Good 3 3 PPB
1:00 AM LAST O3 8 Good 34 37 PPB
1:00 AM LMB PM10 24 Good 27 29 µg/m3
1:00 AM LMB PM2.5 24 Good 27 4 µg/m3
1:00 AM LNGM PM10 24 Good 14 15 µg/m3
1:00 AM LNGM PM2.5 24 Good 21 3 µg/m3
1:00 AM MAN O3 8 Good 41 44 PPB
1:00 AM MFP NO2 1 Good 1 1 PPB
1:00 AM MFP O3 8 Good 39 42 PPB
1:00 AM NJH PM10 24 Good 11 12 µg/m3
1:00 AM NJH PM2.5 24 Good 13 2 µg/m3
1:00 AM NREL O3 8 Good 43 46 PPB
1:00 AM PAG PM10 24 Good 23 25 µg/m3
1:00 AM PAG PM2.5 24 Good 19 3 µg/m3
1:00 AM PAL O3 8 Good 31 33 PPB
1:00 AM PFS PM10 24 Good 19 20 µg/m3
1:00 AM PFS PM2.5 24 Good 19 3 µg/m3
1:00 AM PMS PM2.5 24 Good 21 3 µg/m3
1:00 AM PWES O3 8 Good 31 34 PPB
1:00 AM RFN O3 8 Good 43 46 PPB
1:00 AM RIFL PM2.5 24 Good 11 2 µg/m3
1:00 AM RIFLO3 O3 8 Good 22 24 PPB
1:00 AM SSMB PM10 24 Good 10 11 µg/m3
1:00 AM SSMB PM2.5 24 Good 18 3 µg/m3
1:00 AM TEL PM10 24 Good 14 15 µg/m3
1:00 AM TEL PM2.5 24 Good 12 2 µg/m3
1:00 AM TIM NO2 1 Good 2 2 PPB
1:00 AM TIM O3 8 Good 35 38 PPB
1:00 AM TIM PM10 24 Good 11 12 µg/m3
1:00 AM TIM PM2.5 24 Good 16 2 µg/m3
1:00 AM WBY NO2 1 Good 4 4 PPB
1:00 AM WBY NO2 1 Good 4 4 PPB
1:00 AM WBY O3 8 Good 36 39 PPB
1:00 AM WBY PM10 24 Good 10 11 µg/m3
1:00 AM WBY PM2.5 24 Good 11 2 µg/m3

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