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AQI Calculations on 05/26/2026 1:00AM - 2:00AM

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.
2:00 AM ACAD O3 8 Good 39 42 PPB
2:00 AM ACC PM10 24 Good 7 8 µg/m3
2:00 AM ACC PM2.5 24 Good 14 2 µg/m3
2:00 AM ADB PM10 24 Good 20 22 µg/m3
2:00 AM ADB PM2.5 24 Good 24 4 µg/m3
2:00 AM ALA PM10 24 Good 22 24 µg/m3
2:00 AM ALA PM2.5 24 Good 27 4 µg/m3
2:00 AM ASPN O3 8 Good 43 46 PPB
2:00 AM ASPN2 PM10 24 Good 11 12 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 18 3 µg/m3
2:00 AM AURE O3 8 Good 49 53 PPB
2:00 AM BHWK O3 8 Good 47 51 PPB
2:00 AM BOU PM10 24 Good 12 13 µg/m3
2:00 AM BOU PM2.5 24 Good 18 3 µg/m3
2:00 AM BOUR O3 8 Good 38 41 PPB
2:00 AM CAMP NO2 1 Good 5 5 PPB
2:00 AM CAMP NO2 1 Good 5 5 PPB
2:00 AM CAMP O3 8 Good 46 50 PPB
2:00 AM CAMP PM10 24 Good 7 8 µg/m3
2:00 AM CAMP PM2.5 24 Good 17 3 µg/m3
2:00 AM CAN PM10 24 Good 14 15 µg/m3
2:00 AM CAN PM2.5 24 Good 20 3 µg/m3
2:00 AM CASA CO 8 Good 1 0.1 PPM
2:00 AM CASA NO2 1 Good 5 5 PPB
2:00 AM CASA O3 8 Good 46 50 PPB
2:00 AM CASA PM10 24 Good 15 16 µg/m3
2:00 AM CASA PM2.5 24 Good 21 3 µg/m3
2:00 AM CCOL PM10 24 Good 18 19 µg/m3
2:00 AM CCOL PM2.5 24 Good 22 3 µg/m3
2:00 AM CHAT O3 8 Good 46 50 PPB
2:00 AM CHAT PM10 24 Good 12 13 µg/m3
2:00 AM CHAT PM2.5 24 Good 17 3 µg/m3
2:00 AM CTZ O3 8 Good 48 52 PPB
2:00 AM DELT PM10 24 Good 21 23 µg/m3
2:00 AM DELT PM2.5 24 Good 25 4 µg/m3
2:00 AM DELT PM2.5 24 Good 25 4 µg/m3
2:00 AM EVG O3 8 Good 43 46 PPB
2:00 AM FOS NO2 1 Good 2 2 PPB
2:00 AM FOS O3 8 Good 41 44 PPB
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM FTC O3 8 Good 41 44 PPB
2:00 AM FTCF PM10 24 Good 12 13 µg/m3
2:00 AM FTCF PM2.5 24 Good 21 3 µg/m3
2:00 AM FTCW O3 8 Good 39 42 PPB
2:00 AM GJPB PM10 24 Good 6 6 µg/m3
2:00 AM GJPB PM2.5 24 Good 17 3 µg/m3
2:00 AM GREH PM10 24 Good 11 12 µg/m3
2:00 AM GREH PM2.5 24 Good 21 3 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 49 53 PPB
2:00 AM HLD O3 8 Good 50 54 PPB
2:00 AM I25DEN CO 8 Good 1 0.1 PPM
2:00 AM I25DEN NO2 1 Good 10 11 PPB
2:00 AM I25DEN PM10 24 Good 16 17 µg/m3
2:00 AM I25DEN PM2.5 24 Good 22 3 µg/m3
2:00 AM I25GLO NO2 1 Good 11 12 PPB
2:00 AM I25GLO PM10 24 Good 16 17 µg/m3
2:00 AM I25GLO PM2.5 24 Good 21 3 µg/m3
2:00 AM LAST NO2 1 Good 3 3 PPB
2:00 AM LAST O3 8 Good 46 50 PPB
2:00 AM LMB PM10 24 Good 16 17 µg/m3
2:00 AM LMB PM2.5 24 Good 24 4 µg/m3
2:00 AM LNGM PM10 24 Good 17 18 µg/m3
2:00 AM LNGM PM2.5 24 Good 26 4 µg/m3
2:00 AM MAN O3 8 Good 44 47 PPB
2:00 AM MFP NO2 1 Good 3 3 PPB
2:00 AM MFP O3 8 Good 44 47 PPB
2:00 AM NJH PM10 24 Good 13 14 µg/m3
2:00 AM NJH PM2.5 24 Good 19 3 µg/m3
2:00 AM NREL O3 8 Good 48 52 PPB
2:00 AM PAG PM10 24 Good 19 20 µg/m3
2:00 AM PAG PM2.5 24 Good 23 4 µg/m3
2:00 AM PAL O3 8 Good 44 48 PPB
2:00 AM PFS PM10 24 Good 22 24 µg/m3
2:00 AM PFS PM2.5 24 Good 22 3 µg/m3
2:00 AM PMS PM2.5 24 Good 26 4 µg/m3
2:00 AM PWES O3 8 Good 47 51 PPB
2:00 AM RFN NO2 1 Good 4 4 PPB
2:00 AM RFN O3 8 Good 46 50 PPB
2:00 AM RIFL PM2.5 24 Good 21 3 µg/m3
2:00 AM RIFLO3 O3 8 Good 38 41 PPB
2:00 AM SSMB PM10 24 Good 11 12 µg/m3
2:00 AM SSMB PM2.5 24 Good 20 3 µg/m3
2:00 AM TEL PM10 24 Good 18 19 µg/m3
2:00 AM TEL PM2.5 24 Good 22 4 µg/m3
2:00 AM TIM NO2 1 Good 2 2 PPB
2:00 AM TIM O3 8 Good 44 47 PPB
2:00 AM TIM PM10 24 Good 17 18 µg/m3
2:00 AM TIM PM2.5 24 Good 22 3 µg/m3
2:00 AM WBY NO2 1 Good 6 6 PPB
2:00 AM WBY NO2 1 Good 6 6 PPB
2:00 AM WBY O3 8 Good 47 51 PPB
2:00 AM WBY PM10 24 Good 18 19 µg/m3
2:00 AM WBY PM2.5 24 Good 22 3 µg/m3
2:00 AM WBY SO2 1 Good 1 1 PPB
2:00 AM WBY SO2 1 Good 1 1 PPB
1:00 AM ACAD O3 8 Good 42 45 PPB
1:00 AM ACC PM10 24 Good 6 7 µg/m3
1:00 AM ACC PM2.5 24 Good 14 2 µg/m3
1:00 AM ADB PM10 24 Good 21 23 µg/m3
1:00 AM ADB PM2.5 24 Good 26 4 µg/m3
1:00 AM ALA PM10 24 Good 22 24 µg/m3
1:00 AM ALA PM2.5 24 Good 27 4 µg/m3
1:00 AM ASPN O3 8 Good 44 47 PPB
1:00 AM ASPN2 PM10 24 Good 11 12 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 18 3 µg/m3
1:00 AM AURE O3 8 Moderate 51 55 PPB
1:00 AM BHWK O3 8 Good 48 52 PPB
1:00 AM BOU PM10 24 Good 11 12 µg/m3
1:00 AM BOU PM2.5 24 Good 18 3 µg/m3
1:00 AM BOUR O3 8 Good 40 43 PPB
1:00 AM CAMP NO2 1 Good 3 3 PPB
1:00 AM CAMP NO2 1 Good 3 3 PPB
1:00 AM CAMP O3 8 Good 48 52 PPB
1:00 AM CAMP PM10 24 Good 7 8 µg/m3
1:00 AM CAMP PM2.5 24 Good 17 3 µg/m3
1:00 AM CAN PM10 24 Good 14 15 µg/m3
1:00 AM CAN PM2.5 24 Good 20 3 µg/m3
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CASA NO2 1 Good 4 4 PPB
1:00 AM CASA O3 8 Good 48 52 PPB
1:00 AM CASA PM10 24 Good 14 15 µg/m3
1:00 AM CASA PM2.5 24 Good 21 3 µg/m3
1:00 AM CCOL PM10 24 Good 18 19 µg/m3
1:00 AM CCOL PM2.5 24 Good 21 3 µg/m3
1:00 AM CHAT O3 8 Good 48 52 PPB
1:00 AM CHAT PM10 24 Good 12 13 µg/m3
1:00 AM CHAT PM2.5 24 Good 17 3 µg/m3
1:00 AM CTZ O3 8 Good 48 52 PPB
1:00 AM DELT PM10 24 Good 21 23 µg/m3
1:00 AM DELT PM2.5 24 Good 25 4 µg/m3
1:00 AM DELT PM2.5 24 Good 25 4 µg/m3
1:00 AM EVG O3 8 Good 46 50 PPB
1:00 AM FOS NO2 1 Good 3 3 PPB
1:00 AM FOS O3 8 Good 43 46 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 44 48 PPB
1:00 AM FTCF PM10 24 Good 11 12 µg/m3
1:00 AM FTCF PM2.5 24 Good 20 3 µg/m3
1:00 AM FTCW O3 8 Good 42 45 PPB
1:00 AM GJPB PM10 24 Good 6 6 µg/m3
1:00 AM GJPB PM2.5 24 Good 17 3 µg/m3
1:00 AM GREH PM10 24 Good 11 12 µg/m3
1:00 AM GREH PM2.5 24 Good 21 3 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 50 54 PPB
1:00 AM HLD O3 8 Moderate 51 55 PPB
1:00 AM I25DEN CO 8 Good 1 0.1 PPM
1:00 AM I25DEN NO2 1 Good 10 11 PPB
1:00 AM I25DEN PM10 24 Good 16 17 µg/m3
1:00 AM I25DEN PM2.5 24 Good 21 3 µg/m3
1:00 AM I25GLO NO2 1 Good 6 6 PPB
1:00 AM I25GLO PM10 24 Good 16 17 µg/m3
1:00 AM I25GLO PM2.5 24 Good 21 3 µg/m3
1:00 AM LAST NO2 1 Good 4 4 PPB
1:00 AM LAST O3 8 Good 48 52 PPB
1:00 AM LMB PM10 24 Good 16 17 µg/m3
1:00 AM LMB PM2.5 24 Good 24 4 µg/m3
1:00 AM LNGM PM10 24 Good 17 18 µg/m3
1:00 AM LNGM PM2.5 24 Good 26 4 µg/m3
1:00 AM MAN O3 8 Good 46 50 PPB
1:00 AM MFP NO2 1 Good 3 3 PPB
1:00 AM MFP O3 8 Good 45 49 PPB
1:00 AM NJH PM10 24 Good 13 14 µg/m3
1:00 AM NJH PM2.5 24 Good 19 3 µg/m3
1:00 AM NREL O3 8 Good 50 54 PPB
1:00 AM PAG PM10 24 Good 18 19 µg/m3
1:00 AM PAG PM2.5 24 Good 23 4 µg/m3
1:00 AM PAL O3 8 Good 45 49 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 26 4 µg/m3
1:00 AM PWES O3 8 Good 49 53 PPB
1:00 AM RFN NO2 1 Good 1 1 PPB
1:00 AM RFN O3 8 Good 48 52 PPB
1:00 AM RIFL PM2.5 24 Good 20 3 µg/m3
1:00 AM RIFLO3 O3 8 Good 38 41 PPB
1:00 AM SSMB PM10 24 Good 11 12 µg/m3
1:00 AM SSMB PM2.5 24 Good 20 3 µg/m3
1:00 AM TEL PM10 24 Good 18 19 µg/m3
1:00 AM TEL PM2.5 24 Good 22 4 µg/m3
1:00 AM TIM NO2 1 Good 1 1 PPB
1:00 AM TIM O3 8 Good 45 49 PPB
1:00 AM TIM PM10 24 Good 17 18 µg/m3
1:00 AM TIM PM2.5 24 Good 22 3 µg/m3
1:00 AM WBY NO2 1 Good 5 5 PPB
1:00 AM WBY NO2 1 Good 5 5 PPB
1:00 AM WBY O3 8 Good 50 54 PPB
1:00 AM WBY PM10 24 Good 18 19 µg/m3
1:00 AM WBY PM2.5 24 Good 22 4 µg/m3

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