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AQI Calculations on 03/01/2026 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 35 38 PPB
2:00 AM ACC PM10 24 Good 6 6 µg/m3
2:00 AM ACC PM2.5 24 Good 9 1 µg/m3
2:00 AM ADB PM10 24 Good 19 20 µg/m3
2:00 AM ADB PM2.5 24 Good 16 2 µg/m3
2:00 AM ALA PM10 24 Good 14 15 µg/m3
2:00 AM ALA PM2.5 24 Good 19 3 µg/m3
2:00 AM ASPN O3 8 Good 31 33 PPB
2:00 AM ASPN2 PM10 24 Good 30 32 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 21 3 µg/m3
2:00 AM AURE O3 8 Good 42 45 PPB
2:00 AM BHWK O3 8 Good 43 46 PPB
2:00 AM BOU PM10 24 Good 7 8 µg/m3
2:00 AM BOU PM2.5 24 Good 9 1 µg/m3
2:00 AM BOUR O3 8 Good 32 35 PPB
2:00 AM CAMP NO2 1 Good 14 15 PPB
2:00 AM CAMP NO2 1 Good 14 15 PPB
2:00 AM CAMP O3 8 Good 28 30 PPB
2:00 AM CAMP PM10 24 Good 6 6 µg/m3
2:00 AM CAMP PM2.5 24 Good 12 2 µg/m3
2:00 AM CAN PM10 24 Good 6 7 µg/m3
2:00 AM CAN PM2.5 24 Good 8 1 µg/m3
2:00 AM CASA CO 8 Good 1 0.1 PPM
2:00 AM CASA NO2 1 Good 7 7 PPB
2:00 AM CASA O3 8 Good 30 32 PPB
2:00 AM CASA PM10 24 Good 8 9 µg/m3
2:00 AM CASA PM2.5 24 Good 12 2 µg/m3
2:00 AM CCOL PM10 24 Good 15 16 µg/m3
2:00 AM CCOL PM2.5 24 Good 14 2 µg/m3
2:00 AM CHAT O3 8 Good 39 42 PPB
2:00 AM CHAT PM10 24 Good 9 10 µg/m3
2:00 AM CHAT PM2.5 24 Good 10 1 µg/m3
2:00 AM CTZ O3 8 Good 19 21 PPB
2:00 AM DELT PM10 24 Good 12 13 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 37 40 PPB
2:00 AM FOS NO2 1 Good 2 2 PPB
2:00 AM FOS O3 8 Good 32 35 PPB
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM FTC O3 8 Good 32 35 PPB
2:00 AM FTCF PM10 24 Good 12 13 µg/m3
2:00 AM FTCF PM2.5 24 Good 16 2 µg/m3
2:00 AM FTCW O3 8 Good 35 38 PPB
2:00 AM GJPB PM10 24 Good 9 10 µg/m3
2:00 AM GJPB PM2.5 24 Good 22 4 µg/m3
2:00 AM GREH PM10 24 Good 21 23 µg/m3
2:00 AM GREH PM2.5 24 Good 29 5 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 34 37 PPB
2:00 AM HLD O3 8 Good 36 39 PPB
2:00 AM I25DEN CO 8 Good 3 0.3 PPM
2:00 AM I25DEN NO2 1 Good 10 11 PPB
2:00 AM I25DEN PM10 24 Good 12 13 µg/m3
2:00 AM I25DEN PM2.5 24 Good 14 2 µg/m3
2:00 AM I25GLO NO2 1 Good 9 10 PPB
2:00 AM I25GLO PM10 24 Good 15 16 µg/m3
2:00 AM I25GLO PM2.5 24 Good 14 2 µg/m3
2:00 AM LAST NO2 1 Good 2 2 PPB
2:00 AM LAST O3 8 Good 31 34 PPB
2:00 AM LMB PM10 24 Good 17 18 µg/m3
2:00 AM LMB PM2.5 24 Good 17 3 µg/m3
2:00 AM LNGM PM10 24 Good 13 14 µg/m3
2:00 AM LNGM PM2.5 24 Good 12 2 µg/m3
2:00 AM MAN O3 8 Good 42 45 PPB
2:00 AM MFP NO2 1 Good 2 2 PPB
2:00 AM MFP O3 8 Good 36 39 PPB
2:00 AM NJH PM10 24 Good 9 10 µg/m3
2:00 AM NJH PM2.5 24 Good 13 2 µg/m3
2:00 AM NREL O3 8 Good 40 43 PPB
2:00 AM PAG PM10 24 Good 22 24 µg/m3
2:00 AM PAG PM2.5 24 Good 17 3 µg/m3
2:00 AM PAL O3 8 Good 29 31 PPB
2:00 AM PFS PM10 24 Good 11 12 µg/m3
2:00 AM PFS PM2.5 24 Good 12 2 µg/m3
2:00 AM PMS PM2.5 24 Good 19 3 µg/m3
2:00 AM PWES O3 8 Good 34 37 PPB
2:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN O3 8 Good 38 41 PPB
2:00 AM RIFLO3 O3 8 Good 10 11 PPB
2:00 AM SSMB PM10 24 Good 18 19 µg/m3
2:00 AM SSMB PM2.5 24 Good 22 3 µg/m3
2:00 AM TEL PM10 24 Good 37 40 µg/m3
2:00 AM TEL PM2.5 24 Good 20 3 µg/m3
2:00 AM TIM NO2 1 Good 2 2 PPB
2:00 AM TIM O3 8 Good 32 35 PPB
2:00 AM TIM PM10 24 Good 12 13 µg/m3
2:00 AM TIM PM2.5 24 Good 17 3 µg/m3
2:00 AM WBY NO2 1 Good 3 3 PPB
2:00 AM WBY NO2 1 Good 3 3 PPB
2:00 AM WBY O3 8 Good 32 35 PPB
2:00 AM WBY PM10 24 Good 18 19 µg/m3
2:00 AM WBY PM2.5 24 Good 13 2 µg/m3
1:00 AM ACAD O3 8 Good 36 39 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 19 20 µg/m3
1:00 AM ADB PM2.5 24 Good 16 2 µg/m3
1:00 AM ALA PM10 24 Good 15 16 µg/m3
1:00 AM ALA PM2.5 24 Good 19 3 µg/m3
1:00 AM ASPN O3 8 Good 31 34 PPB
1:00 AM ASPN2 PM10 24 Good 31 33 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 22 3 µg/m3
1:00 AM AURE O3 8 Good 43 46 PPB
1:00 AM BHWK O3 8 Good 43 46 PPB
1:00 AM BOU PM10 24 Good 6 7 µg/m3
1:00 AM BOU PM2.5 24 Good 8 1 µg/m3
1:00 AM BOUR O3 8 Good 34 37 PPB
1:00 AM CAMP NO2 1 Good 17 18 PPB
1:00 AM CAMP NO2 1 Good 17 18 PPB
1:00 AM CAMP O3 8 Good 31 33 PPB
1:00 AM CAMP PM10 24 Good 5 5 µg/m3
1:00 AM CAMP PM2.5 24 Good 12 2 µg/m3
1:00 AM CAN PM10 24 Good 6 7 µg/m3
1:00 AM CAN PM2.5 24 Good 8 1 µg/m3
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CASA NO2 1 Good 8 8 PPB
1:00 AM CASA O3 8 Good 31 34 PPB
1:00 AM CASA PM10 24 Good 8 9 µg/m3
1:00 AM CASA PM2.5 24 Good 12 2 µg/m3
1:00 AM CCOL PM10 24 Good 14 15 µg/m3
1:00 AM CCOL PM2.5 24 Good 13 2 µg/m3
1:00 AM CHAT O3 8 Good 41 44 PPB
1:00 AM CHAT PM10 24 Good 9 10 µg/m3
1:00 AM CHAT PM2.5 24 Good 10 1 µg/m3
1:00 AM CTZ O3 8 Good 23 25 PPB
1:00 AM DELT PM10 24 Good 12 13 µg/m3
1:00 AM DELT PM2.5 24 Good 24 4 µg/m3
1:00 AM DELT PM2.5 24 Good 24 4 µg/m3
1:00 AM EVG O3 8 Good 37 40 PPB
1:00 AM FOS NO2 1 Good 1 1 PPB
1:00 AM FOS O3 8 Good 33 36 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 34 37 PPB
1:00 AM FTCF PM10 24 Good 11 12 µg/m3
1:00 AM FTCF PM2.5 24 Good 15 2 µg/m3
1:00 AM FTCW O3 8 Good 38 41 PPB
1:00 AM GJPB PM10 24 Good 9 10 µg/m3
1:00 AM GJPB PM2.5 24 Good 23 4 µg/m3
1:00 AM GREH PM10 24 Good 21 23 µg/m3
1:00 AM GREH PM2.5 24 Good 30 5 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 35 38 PPB
1:00 AM HLD O3 8 Good 38 41 PPB
1:00 AM I25DEN CO 8 Good 3 0.3 PPM
1:00 AM I25DEN NO2 1 Good 16 17 PPB
1:00 AM I25DEN PM10 24 Good 12 13 µg/m3
1:00 AM I25DEN PM2.5 24 Good 14 2 µg/m3
1:00 AM I25GLO NO2 1 Good 14 15 PPB
1:00 AM I25GLO PM10 24 Good 14 15 µg/m3
1:00 AM I25GLO PM2.5 24 Good 14 2 µg/m3
1:00 AM LAST NO2 1 Good 2 2 PPB
1:00 AM LAST O3 8 Good 34 37 PPB
1:00 AM LMB PM10 24 Good 17 18 µg/m3
1:00 AM LMB PM2.5 24 Good 17 3 µg/m3
1:00 AM LNGM PM10 24 Good 12 13 µg/m3
1:00 AM LNGM PM2.5 24 Good 12 2 µg/m3
1:00 AM MAN O3 8 Good 43 46 PPB
1:00 AM MFP NO2 1 Good 1 1 PPB
1:00 AM MFP O3 8 Good 37 40 PPB
1:00 AM NJH PM10 24 Good 8 9 µg/m3
1:00 AM NJH PM2.5 24 Good 13 2 µg/m3
1:00 AM NREL O3 8 Good 42 45 PPB
1:00 AM PAG PM10 24 Good 22 24 µg/m3
1:00 AM PAG PM2.5 24 Good 17 3 µg/m3
1:00 AM PAL O3 8 Good 31 33 PPB
1:00 AM PFS PM10 24 Good 11 12 µg/m3
1:00 AM PFS PM2.5 24 Good 12 2 µg/m3
1:00 AM PMS PM2.5 24 Good 19 3 µg/m3
1:00 AM PWES O3 8 Good 35 38 PPB
1:00 AM RFN NO2 1 Good 2 2 PPB
1:00 AM RFN O3 8 Good 40 43 PPB
1:00 AM RIFLO3 O3 8 Good 14 15 PPB
1:00 AM SSMB PM10 24 Good 18 19 µg/m3
1:00 AM SSMB PM2.5 24 Good 22 3 µg/m3
1:00 AM TEL PM10 24 Good 37 40 µg/m3
1:00 AM TEL PM2.5 24 Good 20 3 µg/m3
1:00 AM TIM NO2 1 Good 2 2 PPB
1:00 AM TIM O3 8 Good 34 37 PPB
1:00 AM TIM PM10 24 Good 12 13 µg/m3
1:00 AM TIM PM2.5 24 Good 17 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 33 36 PPB
1:00 AM WBY PM10 24 Good 17 18 µg/m3
1:00 AM WBY PM2.5 24 Good 13 2 µg/m3

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