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AQI Calculations on 10/26/2026 1:00AM - 3:00AM

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.
3:00 AM ACAD O3 8 Good 18 19 PPB
3:00 AM ACC PM10 24 Good 12 13 µg/m3
3:00 AM ACC PM2.5 24 Good 35 6 µg/m3
3:00 AM ADB PM10 24 Good 14 15 µg/m3
3:00 AM ADB PM2.5 24 Good 27 4 µg/m3
3:00 AM ALA PM10 24 Good 3 3 µg/m3
3:00 AM ALA PM2.5 24 Good 9 1 µg/m3
3:00 AM ASPN2 PM10 24 Good 2 2 µg/m3
3:00 AM ASPN2 PM2.5 24 Good 8 1 µg/m3
3:00 AM BHWK O3 8 Good 24 26 PPB
3:00 AM BOU PM10 24 Good 13 14 µg/m3
3:00 AM BOU PM2.5 24 Good 28 5 µg/m3
3:00 AM BOUR O3 8 Good 13 14 PPB
3:00 AM CAMP NO2 1 Good 5 5 PPB
3:00 AM CAMP NO2 1 Good 5 5 PPB
3:00 AM CAMP O3 8 Good 8 9 PPB
3:00 AM CAMP PM10 24 Good 13 14 µg/m3
3:00 AM CAMP PM2.5 24 Good 31 5 µg/m3
3:00 AM CAN PM10 24 Good 7 8 µg/m3
3:00 AM CAN PM2.5 24 Good 24 4 µg/m3
3:00 AM CASA CO 8 Good 1 0.1 PPM
3:00 AM CASA NO2 1 Good 3 3 PPB
3:00 AM CASA O3 8 Good 10 11 PPB
3:00 AM CASA PM10 24 Good 11 12 µg/m3
3:00 AM CASA PM2.5 24 Good 28 5 µg/m3
3:00 AM CCOL PM10 24 Good 14 15 µg/m3
3:00 AM CCOL PM2.5 24 Good 48 8 µg/m3
3:00 AM CHAT NO2 1 Good 2 2 PPB
3:00 AM CHAT O3 8 Good 17 18 PPB
3:00 AM CHAT PM10 24 Good 11 12 µg/m3
3:00 AM CHAT PM2.5 24 Good 38 6 µg/m3
3:00 AM CTZ O3 8 Good 12 13 PPB
3:00 AM DELT PM10 24 Good 6 7 µg/m3
3:00 AM DELT PM2.5 24 Good 19 3 µg/m3
3:00 AM DELT PM2.5 24 Good 19 3 µg/m3
3:00 AM EDW PM10 24 Good 3 3 µg/m3
3:00 AM EDW PM2.5 24 Good 9 1 µg/m3
3:00 AM EVG O3 8 Good 19 21 PPB
3:00 AM FOS NO2 1 Good 1 1 PPB
3:00 AM FOS O3 8 Good 12 13 PPB
3:00 AM FTC CO 8 Good 1 0.1 PPM
3:00 AM FTCF PM10 24 Good 10 11 µg/m3
3:00 AM FTCF PM2.5 24 Good 22 4 µg/m3
3:00 AM FTCW NO2 1 Good 2 2 PPB
3:00 AM FTCW O3 8 Good 11 12 PPB
3:00 AM GREH PM10 24 Good 6 7 µg/m3
3:00 AM GREH PM2.5 24 Good 16 2 µg/m3
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM GRET O3 8 Good 10 11 PPB
3:00 AM HLD O3 8 Good 14 15 PPB
3:00 AM I25DEN CO 8 Good 1 0.1 PPM
3:00 AM I25DEN NO2 1 Good 4 4 PPB
3:00 AM I25DEN PM10 24 Good 12 13 µg/m3
3:00 AM I25DEN PM2.5 24 Good 31 5 µg/m3
3:00 AM I25GLO NO2 1 Good 5 5 PPB
3:00 AM I25GLO PM10 24 Good 11 12 µg/m3
3:00 AM I25GLO PM2.5 24 Good 28 5 µg/m3
3:00 AM LAST NO2 1 Good 2 2 PPB
3:00 AM LAST O3 8 Good 7 8 PPB
3:00 AM LMB PM10 24 Good 5 5 µg/m3
3:00 AM LMB PM2.5 24 Good 21 3 µg/m3
3:00 AM LNGM PM10 24 Good 11 12 µg/m3
3:00 AM LNGM PM2.5 24 Good 24 4 µg/m3
3:00 AM MAN O3 8 Good 20 22 PPB
3:00 AM MESA PM10 24 Good 5 5 µg/m3
3:00 AM MESA PM2.5 24 Good 14 2 µg/m3
3:00 AM MFP NO2 1 Good 1 1 PPB
3:00 AM MFP O3 8 Good 14 15 PPB
3:00 AM NJH PM10 24 Good 11 12 µg/m3
3:00 AM NJH PM2.5 24 Good 29 5 µg/m3
3:00 AM PAG PM10 24 Good 6 7 µg/m3
3:00 AM PAG PM2.5 24 Good 13 2 µg/m3
3:00 AM PAL O3 8 Good 24 26 PPB
3:00 AM PFS PM10 24 Good 6 6 µg/m3
3:00 AM PFS PM2.5 24 Good 19 3 µg/m3
3:00 AM PMS PM2.5 24 Good 18 3 µg/m3
3:00 AM PWES O3 8 Good 18 19 PPB
3:00 AM RFN NO2 1 Good 1 1 PPB
3:00 AM RFN O3 8 Good 13 14 PPB
3:00 AM RIFLO3 O3 8 Good 12 13 PPB
3:00 AM SSMB PM10 24 Good 3 3 µg/m3
3:00 AM SSMB PM2.5 24 Good 10 1 µg/m3
3:00 AM TEL PM10 24 Good 3 3 µg/m3
3:00 AM TEL PM2.5 24 Good 8 1 µg/m3
3:00 AM TIM O3 8 Good 10 11 PPB
3:00 AM TIM PM10 24 Good 8 9 µg/m3
3:00 AM TIM PM2.5 24 Good 18 3 µg/m3
3:00 AM WBY NO2 1 Good 3 3 PPB
3:00 AM WBY NO2 1 Good 3 3 PPB
3:00 AM WBY O3 8 Good 11 12 PPB
3:00 AM WBY PM10 24 Good 11 12 µg/m3
3:00 AM WBY PM2.5 24 Good 25 4 µg/m3
2:00 AM ACAD O3 8 Good 17 18 PPB
2:00 AM ACC PM10 24 Good 12 13 µg/m3
2:00 AM ACC PM2.5 24 Good 36 6 µg/m3
2:00 AM ADB PM10 24 Good 14 15 µg/m3
2:00 AM ADB PM2.5 24 Good 28 5 µg/m3
2:00 AM ALA PM10 24 Good 3 3 µg/m3
2:00 AM ALA PM2.5 24 Good 9 1 µg/m3
2:00 AM ASPN2 PM10 24 Good 2 2 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 8 1 µg/m3
2:00 AM BHWK O3 8 Good 26 28 PPB
2:00 AM BOU PM10 24 Good 14 15 µg/m3
2:00 AM BOU PM2.5 24 Good 29 5 µg/m3
2:00 AM BOUR O3 8 Good 15 16 PPB
2:00 AM CAMP NO2 1 Good 6 6 PPB
2:00 AM CAMP NO2 1 Good 6 6 PPB
2:00 AM CAMP O3 8 Good 10 11 PPB
2:00 AM CAMP PM10 24 Good 13 14 µg/m3
2:00 AM CAMP PM2.5 24 Good 32 5 µg/m3
2:00 AM CAN PM10 24 Good 7 8 µg/m3
2:00 AM CAN PM2.5 24 Good 24 4 µg/m3
2:00 AM CASA CO 8 Good 1 0.1 PPM
2:00 AM CASA NO2 1 Good 2 2 PPB
2:00 AM CASA O3 8 Good 13 14 PPB
2:00 AM CASA PM10 24 Good 12 13 µg/m3
2:00 AM CASA PM2.5 24 Good 29 5 µg/m3
2:00 AM CCOL PM10 24 Good 14 15 µg/m3
2:00 AM CCOL PM2.5 24 Good 48 8 µg/m3
2:00 AM CHAT NO2 1 Good 2 2 PPB
2:00 AM CHAT O3 8 Good 19 21 PPB
2:00 AM CHAT PM10 24 Good 12 13 µg/m3
2:00 AM CHAT PM2.5 24 Good 39 7 µg/m3
2:00 AM CTZ O3 8 Good 14 15 PPB
2:00 AM DELT PM10 24 Good 6 7 µg/m3
2:00 AM DELT PM2.5 24 Good 19 3 µg/m3
2:00 AM DELT PM2.5 24 Good 19 3 µg/m3
2:00 AM EDW PM10 24 Good 3 3 µg/m3
2:00 AM EDW PM2.5 24 Good 10 1 µg/m3
2:00 AM EVG O3 8 Good 22 24 PPB
2:00 AM FOS NO2 1 Good 2 2 PPB
2:00 AM FOS O3 8 Good 13 14 PPB
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM FTCF PM10 24 Good 11 12 µg/m3
2:00 AM FTCF PM2.5 24 Good 23 4 µg/m3
2:00 AM FTCW NO2 1 Good 2 2 PPB
2:00 AM FTCW O3 8 Good 13 14 PPB
2:00 AM GREH PM10 24 Good 7 8 µg/m3
2:00 AM GREH PM2.5 24 Good 17 3 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 11 12 PPB
2:00 AM HLD O3 8 Good 17 18 PPB
2:00 AM I25DEN CO 8 Good 2 0.2 PPM
2:00 AM I25DEN NO2 1 Good 4 4 PPB
2:00 AM I25DEN PM10 24 Good 12 13 µg/m3
2:00 AM I25DEN PM2.5 24 Good 32 5 µg/m3
2:00 AM I25GLO NO2 1 Good 4 4 PPB
2:00 AM I25GLO PM10 24 Good 12 13 µg/m3
2:00 AM I25GLO PM2.5 24 Good 28 5 µg/m3
2:00 AM LAST NO2 1 Good 2 2 PPB
2:00 AM LAST O3 8 Good 8 9 PPB
2:00 AM LMB PM10 24 Good 5 5 µg/m3
2:00 AM LMB PM2.5 24 Good 20 3 µg/m3
2:00 AM LNGM PM10 24 Good 12 13 µg/m3
2:00 AM LNGM PM2.5 24 Good 24 4 µg/m3
2:00 AM MAN O3 8 Good 19 21 PPB
2:00 AM MESA PM10 24 Good 5 5 µg/m3
2:00 AM MESA PM2.5 24 Good 14 2 µg/m3
2:00 AM MFP NO2 1 Good 2 2 PPB
2:00 AM MFP O3 8 Good 16 17 PPB
2:00 AM NJH PM10 24 Good 11 12 µg/m3
2:00 AM NJH PM2.5 24 Good 29 5 µg/m3
2:00 AM PAG PM10 24 Good 6 7 µg/m3
2:00 AM PAG PM2.5 24 Good 13 2 µg/m3
2:00 AM PAL O3 8 Good 26 28 PPB
2:00 AM PFS PM10 24 Good 6 6 µg/m3
2:00 AM PFS PM2.5 24 Good 19 3 µg/m3
2:00 AM PMS PM2.5 24 Good 19 3 µg/m3
2:00 AM PWES O3 8 Good 18 19 PPB
2:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN O3 8 Good 16 17 PPB
2:00 AM RIFLO3 O3 8 Good 15 16 PPB
2:00 AM SSMB PM10 24 Good 3 3 µg/m3
2:00 AM SSMB PM2.5 24 Good 11 1 µg/m3
2:00 AM TEL PM10 24 Good 3 3 µg/m3
2:00 AM TEL PM2.5 24 Good 8 1 µg/m3
2:00 AM TIM O3 8 Good 11 12 PPB
2:00 AM TIM PM10 24 Good 9 10 µg/m3
2:00 AM TIM PM2.5 24 Good 18 3 µg/m3
2:00 AM WBY NO2 1 Good 2 2 PPB
2:00 AM WBY NO2 1 Good 2 2 PPB
2:00 AM WBY O3 8 Good 14 15 PPB
2:00 AM WBY PM10 24 Good 11 12 µg/m3
2:00 AM WBY PM2.5 24 Good 26 4 µg/m3
1:00 AM ACAD O3 8 Good 17 18 PPB
1:00 AM ACC PM10 24 Good 13 14 µg/m3
1:00 AM ACC PM2.5 24 Good 37 6 µg/m3
1:00 AM ADB PM10 24 Good 15 16 µg/m3
1:00 AM ADB PM2.5 24 Good 29 5 µg/m3
1:00 AM ALA PM10 24 Good 3 3 µg/m3
1:00 AM ALA PM2.5 24 Good 9 1 µg/m3
1:00 AM ASPN2 PM10 24 Good 2 2 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 8 1 µg/m3
1:00 AM BHWK O3 8 Good 28 30 PPB
1:00 AM BOU PM10 24 Good 14 15 µg/m3
1:00 AM BOU PM2.5 24 Good 29 5 µg/m3
1:00 AM BOUR O3 8 Good 18 19 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 13 14 PPB
1:00 AM CAMP PM10 24 Good 14 15 µg/m3
1:00 AM CAMP PM2.5 24 Good 33 5 µg/m3
1:00 AM CAN PM10 24 Good 7 8 µg/m3
1:00 AM CAN PM2.5 24 Good 25 4 µg/m3
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CASA NO2 1 Good 2 2 PPB
1:00 AM CASA O3 8 Good 16 17 PPB
1:00 AM CASA PM10 24 Good 12 13 µg/m3
1:00 AM CASA PM2.5 24 Good 31 5 µg/m3
1:00 AM CCOL PM10 24 Good 14 15 µg/m3
1:00 AM CCOL PM2.5 24 Good 47 8 µg/m3
1:00 AM CHAT NO2 1 Good 2 2 PPB
1:00 AM CHAT O3 8 Good 23 25 PPB
1:00 AM CHAT PM10 24 Good 12 13 µg/m3
1:00 AM CHAT PM2.5 24 Good 40 7 µg/m3
1:00 AM CTZ O3 8 Good 16 17 PPB
1:00 AM DELT PM10 24 Good 6 7 µg/m3
1:00 AM DELT PM2.5 24 Good 19 3 µg/m3
1:00 AM DELT PM2.5 24 Good 19 3 µg/m3
1:00 AM EDW PM10 24 Good 3 3 µg/m3
1:00 AM EDW PM2.5 24 Good 10 1 µg/m3
1:00 AM EVG O3 8 Good 25 27 PPB
1:00 AM FOS NO2 1 Good 2 2 PPB
1:00 AM FOS O3 8 Good 15 16 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTCF PM10 24 Good 12 13 µg/m3
1:00 AM FTCF PM2.5 24 Good 24 4 µg/m3
1:00 AM FTCW NO2 1 Good 1 1 PPB
1:00 AM FTCW O3 8 Good 15 16 PPB
1:00 AM GREH PM10 24 Good 8 9 µg/m3
1:00 AM GREH PM2.5 24 Good 18 3 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 12 13 PPB
1:00 AM HLD O3 8 Good 19 21 PPB
1:00 AM I25DEN CO 8 Good 2 0.2 PPM
1:00 AM I25DEN NO2 1 Good 5 5 PPB
1:00 AM I25DEN PM10 24 Good 12 13 µg/m3
1:00 AM I25DEN PM2.5 24 Good 32 5 µg/m3
1:00 AM I25GLO NO2 1 Good 3 3 PPB
1:00 AM I25GLO PM10 24 Good 12 13 µg/m3
1:00 AM I25GLO PM2.5 24 Good 29 5 µg/m3
1:00 AM LAST NO2 1 Good 1 1 PPB
1:00 AM LAST O3 8 Good 10 11 PPB
1:00 AM LMB PM10 24 Good 5 5 µg/m3
1:00 AM LMB PM2.5 24 Good 19 3 µg/m3
1:00 AM LNGM PM10 24 Good 12 13 µg/m3
1:00 AM LNGM PM2.5 24 Good 25 4 µg/m3
1:00 AM MAN O3 8 Good 19 21 PPB
1:00 AM MESA PM10 24 Good 5 5 µg/m3
1:00 AM MESA PM2.5 24 Good 13 2 µg/m3
1:00 AM MFP NO2 1 Good 1 1 PPB
1:00 AM MFP O3 8 Good 19 20 PPB
1:00 AM NJH PM10 24 Good 11 12 µg/m3
1:00 AM NJH PM2.5 24 Good 30 5 µg/m3
1:00 AM PAG PM10 24 Good 6 7 µg/m3
1:00 AM PAG PM2.5 24 Good 12 2 µg/m3
1:00 AM PAL O3 8 Good 29 31 PPB
1:00 AM PFS PM10 24 Good 6 6 µg/m3
1:00 AM PFS PM2.5 24 Good 19 3 µg/m3
1:00 AM PMS PM2.5 24 Good 19 3 µg/m3
1:00 AM PWES O3 8 Good 19 20 PPB
1:00 AM RFN NO2 1 Good 1 1 PPB
1:00 AM RFN O3 8 Good 19 20 PPB
1:00 AM RIFLO3 O3 8 Good 18 19 PPB
1:00 AM SSMB PM10 24 Good 4 4 µg/m3
1:00 AM SSMB PM2.5 24 Good 11 2 µg/m3
1:00 AM TEL PM10 24 Good 3 3 µg/m3
1:00 AM TEL PM2.5 24 Good 8 1 µg/m3
1:00 AM TIM O3 8 Good 13 14 PPB
1:00 AM TIM PM10 24 Good 10 11 µg/m3
1:00 AM TIM PM2.5 24 Good 19 3 µg/m3
1:00 AM WBY NO2 1 Good 2 2 PPB
1:00 AM WBY NO2 1 Good 2 2 PPB
1:00 AM WBY O3 8 Good 18 19 PPB
1:00 AM WBY PM10 24 Good 12 13 µg/m3
1:00 AM WBY PM2.5 24 Good 27 4 µg/m3

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