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AQI Calculations on 03/02/2026 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 29 31 PPB
2:00 AM ACC PM10 24 Good 11 12 µg/m3
2:00 AM ACC PM2.5 24 Good 18 3 µg/m3
2:00 AM ADB PM10 24 Good 19 20 µg/m3
2:00 AM ADB PM2.5 24 Good 23 4 µg/m3
2:00 AM ALA PM10 24 Good 10 11 µg/m3
2:00 AM ALA PM2.5 24 Good 15 2 µg/m3
2:00 AM ASPN O3 8 Good 30 32 PPB
2:00 AM ASPN2 PM10 24 Good 21 23 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 21 3 µg/m3
2:00 AM AURE O3 8 Good 37 40 PPB
2:00 AM BHWK O3 8 Good 35 38 PPB
2:00 AM BOU PM10 24 Good 12 13 µg/m3
2:00 AM BOU PM2.5 24 Good 17 3 µg/m3
2:00 AM BOUR O3 8 Good 26 28 PPB
2:00 AM CAMP NO2 1 Good 7 7 PPB
2:00 AM CAMP NO2 1 Good 7 7 PPB
2:00 AM CAMP O3 8 Good 26 28 PPB
2:00 AM CAMP PM10 24 Good 10 11 µg/m3
2:00 AM CAMP PM2.5 24 Good 21 3 µg/m3
2:00 AM CAN PM10 24 Good 19 20 µg/m3
2:00 AM CAN PM2.5 24 Good 21 3 µg/m3
2:00 AM CASA CO 8 Good 2 0.2 PPM
2:00 AM CASA NO2 1 Good 11 12 PPB
2:00 AM CASA O3 8 Good 19 20 PPB
2:00 AM CASA PM10 24 Good 15 16 µg/m3
2:00 AM CASA PM2.5 24 Good 20 3 µg/m3
2:00 AM CCOL PM10 24 Good 26 28 µg/m3
2:00 AM CCOL PM2.5 24 Good 22 3 µg/m3
2:00 AM CHAT O3 8 Good 32 35 PPB
2:00 AM CHAT PM10 24 Good 16 17 µg/m3
2:00 AM CHAT PM2.5 24 Good 21 3 µg/m3
2:00 AM CTZ O3 8 Good 19 20 PPB
2:00 AM DELT PM10 24 Good 17 18 µg/m3
2:00 AM DELT PM2.5 24 Good 29 5 µg/m3
2:00 AM DELT PM2.5 24 Good 29 5 µg/m3
2:00 AM EVG O3 8 Good 31 33 PPB
2:00 AM FOS NO2 1 Good 7 7 PPB
2:00 AM FOS O3 8 Good 25 27 PPB
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM FTC O3 8 Good 24 26 PPB
2:00 AM FTCF PM10 24 Good 20 22 µg/m3
2:00 AM FTCF PM2.5 24 Good 38 6 µg/m3
2:00 AM FTCW O3 8 Good 29 31 PPB
2:00 AM GJPB PM10 24 Good 6 7 µg/m3
2:00 AM GJPB PM2.5 24 Good 17 3 µg/m3
2:00 AM GREH PM10 24 Good 16 17 µg/m3
2:00 AM GREH PM2.5 24 Good 32 5 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 28 30 PPB
2:00 AM HLD O3 8 Good 35 38 PPB
2:00 AM I25DEN CO 8 Good 3 0.3 PPM
2:00 AM I25DEN NO2 1 Good 21 22 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 14 15 PPB
2:00 AM I25GLO PM10 24 Good 18 19 µg/m3
2:00 AM I25GLO PM2.5 24 Good 21 3 µg/m3
2:00 AM LAST NO2 1 Good 5 5 PPB
2:00 AM LAST O3 8 Good 26 28 PPB
2:00 AM LMB PM10 24 Good 26 28 µg/m3
2:00 AM LMB PM2.5 24 Good 41 7 µg/m3
2:00 AM LNGM PM10 24 Good 20 22 µg/m3
2:00 AM LNGM PM2.5 24 Good 27 4 µg/m3
2:00 AM MAN O3 8 Good 31 34 PPB
2:00 AM MFP NO2 1 Good 2 2 PPB
2:00 AM MFP O3 8 Good 31 33 PPB
2:00 AM NJH PM10 24 Good 14 15 µg/m3
2:00 AM NJH PM2.5 24 Good 19 3 µg/m3
2:00 AM NREL O3 8 Good 31 34 PPB
2:00 AM PAG PM10 24 Good 16 17 µg/m3
2:00 AM PAG PM2.5 24 Good 14 2 µg/m3
2:00 AM PAL O3 8 Good 21 23 PPB
2:00 AM PFS PM10 24 Good 21 23 µg/m3
2:00 AM PFS PM2.5 24 Good 27 4 µg/m3
2:00 AM PMS PM2.5 24 Good 33 6 µg/m3
2:00 AM PWES O3 8 Good 24 26 PPB
2:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN O3 8 Good 33 36 PPB
2:00 AM RIFL PM2.5 24 Good 13 2 µg/m3
2:00 AM RIFLO3 O3 8 Good 7 8 PPB
2:00 AM SSMB PM10 24 Good 8 9 µg/m3
2:00 AM SSMB PM2.5 24 Good 14 2 µg/m3
2:00 AM TEL PM10 24 Good 27 29 µg/m3
2:00 AM TEL PM2.5 24 Good 18 3 µg/m3
2:00 AM TIM NO2 1 Good 7 7 PPB
2:00 AM TIM O3 8 Good 27 29 PPB
2:00 AM TIM PM10 24 Good 18 19 µg/m3
2:00 AM TIM PM2.5 24 Good 27 4 µg/m3
2:00 AM WBY NO2 1 Good 21 22 PPB
2:00 AM WBY NO2 1 Good 21 22 PPB
2:00 AM WBY O3 8 Good 17 18 PPB
2:00 AM WBY PM10 24 Good 18 19 µg/m3
2:00 AM WBY PM2.5 24 Good 21 3 µg/m3
1:00 AM ACAD O3 8 Good 31 33 PPB
1:00 AM ACC PM10 24 Good 11 12 µg/m3
1:00 AM ACC PM2.5 24 Good 18 3 µg/m3
1:00 AM ADB PM10 24 Good 19 20 µg/m3
1:00 AM ADB PM2.5 24 Good 22 4 µg/m3
1:00 AM ALA PM10 24 Good 10 11 µg/m3
1:00 AM ALA PM2.5 24 Good 14 2 µg/m3
1:00 AM ASPN O3 8 Good 29 31 PPB
1:00 AM ASPN2 PM10 24 Good 21 23 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 21 3 µg/m3
1:00 AM AURE O3 8 Good 37 40 PPB
1:00 AM BHWK O3 8 Good 35 38 PPB
1:00 AM BOU PM10 24 Good 12 13 µg/m3
1:00 AM BOU PM2.5 24 Good 17 3 µg/m3
1:00 AM BOUR O3 8 Good 28 30 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 27 29 PPB
1:00 AM CAMP PM10 24 Good 10 11 µg/m3
1:00 AM CAMP PM2.5 24 Good 21 3 µg/m3
1:00 AM CAN PM10 24 Good 19 20 µg/m3
1:00 AM CAN PM2.5 24 Good 20 3 µg/m3
1:00 AM CASA CO 8 Good 2 0.2 PPM
1:00 AM CASA NO2 1 Good 14 15 PPB
1:00 AM CASA O3 8 Good 19 21 PPB
1:00 AM CASA PM10 24 Good 15 16 µg/m3
1:00 AM CASA PM2.5 24 Good 19 3 µg/m3
1:00 AM CCOL PM10 24 Good 26 28 µg/m3
1:00 AM CCOL PM2.5 24 Good 22 4 µg/m3
1:00 AM CHAT O3 8 Good 32 35 PPB
1:00 AM CHAT PM10 24 Good 15 16 µg/m3
1:00 AM CHAT PM2.5 24 Good 21 3 µg/m3
1:00 AM CTZ O3 8 Good 21 23 PPB
1:00 AM DELT PM10 24 Good 17 18 µg/m3
1:00 AM DELT PM2.5 24 Good 30 5 µg/m3
1:00 AM DELT PM2.5 24 Good 30 5 µg/m3
1:00 AM EVG O3 8 Good 31 34 PPB
1:00 AM FOS NO2 1 Good 5 5 PPB
1:00 AM FOS O3 8 Good 28 30 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 26 28 PPB
1:00 AM FTCF PM10 24 Good 20 22 µg/m3
1:00 AM FTCF PM2.5 24 Good 38 6 µg/m3
1:00 AM FTCW O3 8 Good 31 33 PPB
1:00 AM GJPB PM10 24 Good 6 7 µg/m3
1:00 AM GJPB PM2.5 24 Good 18 3 µg/m3
1:00 AM GREH PM10 24 Good 16 17 µg/m3
1:00 AM GREH PM2.5 24 Good 31 5 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 30 32 PPB
1:00 AM HLD O3 8 Good 36 39 PPB
1:00 AM I25DEN CO 8 Good 3 0.3 PPM
1:00 AM I25DEN NO2 1 Good 25 26 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 22 23 PPB
1:00 AM I25GLO PM10 24 Good 18 19 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 29 31 PPB
1:00 AM LMB PM10 24 Good 26 28 µg/m3
1:00 AM LMB PM2.5 24 Good 41 7 µg/m3
1:00 AM LNGM PM10 24 Good 20 22 µg/m3
1:00 AM LNGM PM2.5 24 Good 27 4 µg/m3
1:00 AM MAN O3 8 Good 32 35 PPB
1:00 AM MFP NO2 1 Good 4 4 PPB
1:00 AM MFP O3 8 Good 31 34 PPB
1:00 AM NJH PM10 24 Good 14 15 µg/m3
1:00 AM NJH PM2.5 24 Good 19 3 µg/m3
1:00 AM NREL O3 8 Good 31 34 PPB
1:00 AM PAG PM10 24 Good 16 17 µg/m3
1:00 AM PAG PM2.5 24 Good 14 2 µg/m3
1:00 AM PAL O3 8 Good 24 26 PPB
1:00 AM PFS PM10 24 Good 20 22 µg/m3
1:00 AM PFS PM2.5 24 Good 27 4 µg/m3
1:00 AM PMS PM2.5 24 Good 33 5 µg/m3
1:00 AM PWES O3 8 Good 26 28 PPB
1:00 AM RFN NO2 1 Good 1 1 PPB
1:00 AM RFN O3 8 Good 34 37 PPB
1:00 AM RIFL PM2.5 24 Good 11 2 µg/m3
1:00 AM RIFLO3 O3 8 Good 10 11 PPB
1:00 AM SSMB PM10 24 Good 8 9 µg/m3
1:00 AM SSMB PM2.5 24 Good 14 2 µg/m3
1:00 AM TEL PM10 24 Good 27 29 µg/m3
1:00 AM TEL PM2.5 24 Good 18 3 µg/m3
1:00 AM TIM NO2 1 Good 3 3 PPB
1:00 AM TIM O3 8 Good 31 33 PPB
1:00 AM TIM PM10 24 Good 18 19 µg/m3
1:00 AM TIM PM2.5 24 Good 27 4 µg/m3
1:00 AM WBY NO2 1 Good 23 24 PPB
1:00 AM WBY NO2 1 Good 23 24 PPB
1:00 AM WBY O3 8 Good 20 22 PPB
1:00 AM WBY PM10 24 Good 19 20 µg/m3
1:00 AM WBY PM2.5 24 Good 21 3 µg/m3

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