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AQI Calculations on 08/14/2026 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 34 37 PPB
3:00 AM ACC PM10 24 Good 12 13 µg/m3
3:00 AM ACC PM2.5 24 Good 39 7 µg/m3
3:00 AM ADB PM10 24 Good 26 28 µg/m3
3:00 AM ADB PM2.5 24 Good 48 8 µg/m3
3:00 AM ALA PM10 24 Good 15 16 µg/m3
3:00 AM ALA PM2.5 24 Good 26 4 µg/m3
3:00 AM ASPN O3 8 Good 17 18 PPB
3:00 AM ASPN2 PM10 24 Good 8 9 µg/m3
3:00 AM ASPN2 PM2.5 24 Good 19 3 µg/m3
3:00 AM BHWK O3 8 Good 32 35 PPB
3:00 AM BOU PM10 24 Good 14 15 µg/m3
3:00 AM BOU PM2.5 24 Good 37 6 µg/m3
3:00 AM BOUR O3 8 Good 44 47 PPB
3:00 AM CAMP NO2 1 Good 6 6 PPB
3:00 AM CAMP NO2 1 Good 6 6 PPB
3:00 AM CAMP O3 8 Good 39 42 PPB
3:00 AM CAMP PM10 24 Good 19 21 µg/m3
3:00 AM CAMP PM2.5 24 Moderate 51 9 µg/m3
3:00 AM CAN PM10 24 Good 21 23 µg/m3
3:00 AM CAN PM2.5 24 Good 41 7 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 35 38 PPB
3:00 AM CASA PM10 24 Good 17 18 µg/m3
3:00 AM CASA PM2.5 24 Good 49 8 µg/m3
3:00 AM CCOL PM10 24 Good 15 16 µg/m3
3:00 AM CCOL PM2.5 24 Good 36 6 µg/m3
3:00 AM CHAT NO2 1 Good 5 5 PPB
3:00 AM CHAT O3 8 Good 39 42 PPB
3:00 AM CHAT PM10 24 Good 9 10 µg/m3
3:00 AM CHAT PM2.5 24 Good 33 5 µg/m3
3:00 AM CTZ O3 8 Good 26 28 PPB
3:00 AM DELT PM10 24 Good 10 11 µg/m3
3:00 AM DELT PM2.5 24 Good 25 4 µg/m3
3:00 AM DELT PM2.5 24 Good 25 4 µg/m3
3:00 AM EVG O3 8 Good 19 20 PPB
3:00 AM FOS NO2 1 Good 6 6 PPB
3:00 AM FOS O3 8 Good 41 44 PPB
3:00 AM FTC CO 8 Good 1 0.1 PPM
3:00 AM FTC O3 8 Good 35 38 PPB
3:00 AM FTCF PM10 24 Good 13 14 µg/m3
3:00 AM FTCF PM2.5 24 Good 43 7 µg/m3
3:00 AM FTCW NO2 1 Good 4 4 PPB
3:00 AM FTCW O3 8 Good 36 39 PPB
3:00 AM GREH PM10 24 Good 13 14 µg/m3
3:00 AM GREH PM2.5 24 Good 39 7 µg/m3
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM GRET O3 8 Good 42 45 PPB
3:00 AM HLD O3 8 Good 45 49 PPB
3:00 AM I25DEN CO 8 Good 3 0.3 PPM
3:00 AM I25DEN NO2 1 Good 8 9 PPB
3:00 AM I25DEN PM10 24 Good 19 21 µg/m3
3:00 AM I25DEN PM2.5 24 Moderate 52 9 µg/m3
3:00 AM I25GLO NO2 1 Good 10 11 PPB
3:00 AM I25GLO PM10 24 Good 23 25 µg/m3
3:00 AM I25GLO PM2.5 24 Moderate 52 9 µg/m3
3:00 AM LAST NO2 1 Good 12 13 PPB
3:00 AM LAST O3 8 Good 31 33 PPB
3:00 AM LMB PM10 24 Good 32 35 µg/m3
3:00 AM LMB PM2.5 24 Good 46 8 µg/m3
3:00 AM LNGM PM10 24 Good 19 21 µg/m3
3:00 AM LNGM PM2.5 24 Moderate 53 10 µg/m3
3:00 AM MAN O3 8 Good 44 48 PPB
3:00 AM MFP NO2 1 Good 2 2 PPB
3:00 AM MFP O3 8 Good 46 50 PPB
3:00 AM NJH PM10 24 Good 14 15 µg/m3
3:00 AM NJH PM2.5 24 Good 42 7 µg/m3
3:00 AM NREL O3 8 Good 44 48 PPB
3:00 AM PAG PM10 24 Good 14 15 µg/m3
3:00 AM PAG PM2.5 24 Good 22 3 µg/m3
3:00 AM PAL O3 8 Good 36 39 PPB
3:00 AM PFS PM10 24 Good 19 20 µg/m3
3:00 AM PFS PM2.5 24 Good 36 6 µg/m3
3:00 AM PMS PM2.5 24 Good 49 8 µg/m3
3:00 AM PWES O3 8 Good 42 45 PPB
3:00 AM RFN NO2 1 Good 1 1 PPB
3:00 AM RFN O3 8 Good 46 50 PPB
3:00 AM RIFLO3 O3 8 Good 18 19 PPB
3:00 AM SSMB PM10 24 Good 9 10 µg/m3
3:00 AM SSMB PM2.5 24 Good 26 4 µg/m3
3:00 AM TEL PM10 24 Good 13 14 µg/m3
3:00 AM TEL PM2.5 24 Good 20 3 µg/m3
3:00 AM TIM NO2 1 Good 4 4 PPB
3:00 AM TIM O3 8 Good 43 46 PPB
3:00 AM TIM PM10 24 Good 10 11 µg/m3
3:00 AM TIM PM2.5 24 Good 32 5 µg/m3
3:00 AM WBY NO2 1 Good 4 4 PPB
3:00 AM WBY NO2 1 Good 4 4 PPB
3:00 AM WBY O3 8 Good 40 43 PPB
3:00 AM WBY PM10 24 Good 20 22 µg/m3
3:00 AM WBY PM2.5 24 Good 45 8 µg/m3
2:00 AM ACAD O3 8 Good 41 44 PPB
2:00 AM ACC PM10 24 Good 12 13 µg/m3
2:00 AM ACC PM2.5 24 Good 39 7 µg/m3
2:00 AM ADB PM10 24 Good 26 28 µg/m3
2:00 AM ADB PM2.5 24 Good 49 8 µg/m3
2:00 AM ALA PM10 24 Good 15 16 µg/m3
2:00 AM ALA PM2.5 24 Good 27 4 µg/m3
2:00 AM ASPN O3 8 Good 19 20 PPB
2:00 AM ASPN2 PM10 24 Good 8 9 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 20 3 µg/m3
2:00 AM BHWK O3 8 Good 35 38 PPB
2:00 AM BOU PM10 24 Good 14 15 µg/m3
2:00 AM BOU PM2.5 24 Good 38 6 µg/m3
2:00 AM BOUR O3 8 Good 44 47 PPB
2:00 AM CAMP NO2 1 Good 9 10 PPB
2:00 AM CAMP NO2 1 Good 9 10 PPB
2:00 AM CAMP O3 8 Good 40 43 PPB
2:00 AM CAMP PM10 24 Good 19 21 µg/m3
2:00 AM CAMP PM2.5 24 Moderate 51 9 µg/m3
2:00 AM CAN PM10 24 Good 21 23 µg/m3
2:00 AM CAN PM2.5 24 Good 42 7 µg/m3
2:00 AM CASA CO 8 Good 2 0.2 PPM
2:00 AM CASA NO2 1 Good 6 6 PPB
2:00 AM CASA O3 8 Good 36 39 PPB
2:00 AM CASA PM10 24 Good 17 18 µg/m3
2:00 AM CASA PM2.5 24 Good 50 9 µg/m3
2:00 AM CCOL PM10 24 Good 15 16 µg/m3
2:00 AM CCOL PM2.5 24 Good 36 6 µg/m3
2:00 AM CHAT NO2 1 Good 5 5 PPB
2:00 AM CHAT O3 8 Good 42 45 PPB
2:00 AM CHAT PM10 24 Good 9 10 µg/m3
2:00 AM CHAT PM2.5 24 Good 33 5 µg/m3
2:00 AM CTZ O3 8 Good 29 31 PPB
2:00 AM DELT PM10 24 Good 11 12 µg/m3
2:00 AM DELT PM2.5 24 Good 26 4 µg/m3
2:00 AM DELT PM2.5 24 Good 26 4 µg/m3
2:00 AM EVG O3 8 Good 22 24 PPB
2:00 AM FOS NO2 1 Good 6 6 PPB
2:00 AM FOS O3 8 Good 45 49 PPB
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM FTC O3 8 Good 38 41 PPB
2:00 AM FTCF PM10 24 Good 13 14 µg/m3
2:00 AM FTCF PM2.5 24 Good 44 7 µg/m3
2:00 AM FTCW NO2 1 Good 3 3 PPB
2:00 AM FTCW O3 8 Good 40 43 PPB
2:00 AM GREH PM10 24 Good 13 14 µg/m3
2:00 AM GREH PM2.5 24 Good 39 7 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 44 47 PPB
2:00 AM HLD O3 8 Good 48 52 PPB
2:00 AM I25DEN CO 8 Good 3 0.3 PPM
2:00 AM I25DEN NO2 1 Good 8 9 PPB
2:00 AM I25DEN PM10 24 Good 19 21 µg/m3
2:00 AM I25DEN PM2.5 24 Moderate 53 10 µg/m3
2:00 AM I25GLO NO2 1 Good 12 13 PPB
2:00 AM I25GLO PM10 24 Good 23 25 µg/m3
2:00 AM I25GLO PM2.5 24 Moderate 52 9 µg/m3
2:00 AM LAST NO2 1 Good 9 10 PPB
2:00 AM LAST O3 8 Good 32 35 PPB
2:00 AM LMB PM10 24 Good 32 35 µg/m3
2:00 AM LMB PM2.5 24 Good 46 8 µg/m3
2:00 AM LNGM PM10 24 Good 19 21 µg/m3
2:00 AM LNGM PM2.5 24 Moderate 52 9 µg/m3
2:00 AM MAN O3 8 Good 48 52 PPB
2:00 AM MFP NO2 1 Good 3 3 PPB
2:00 AM MFP O3 8 Good 50 54 PPB
2:00 AM NJH PM10 24 Good 14 15 µg/m3
2:00 AM NJH PM2.5 24 Good 42 7 µg/m3
2:00 AM NREL O3 8 Good 45 49 PPB
2:00 AM PAG PM10 24 Good 14 15 µg/m3
2:00 AM PAG PM2.5 24 Good 22 3 µg/m3
2:00 AM PAL O3 8 Good 40 43 PPB
2:00 AM PFS PM10 24 Good 19 20 µg/m3
2:00 AM PFS PM2.5 24 Good 37 6 µg/m3
2:00 AM PMS PM2.5 24 Good 50 9 µg/m3
2:00 AM PWES O3 8 Good 44 48 PPB
2:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN O3 8 Good 47 51 PPB
2:00 AM RIFLO3 O3 8 Good 22 24 PPB
2:00 AM SSMB PM10 24 Good 9 10 µg/m3
2:00 AM SSMB PM2.5 24 Good 26 4 µg/m3
2:00 AM TEL PM10 24 Good 13 14 µg/m3
2:00 AM TEL PM2.5 24 Good 19 3 µg/m3
2:00 AM TIM NO2 1 Good 2 2 PPB
2:00 AM TIM O3 8 Good 46 50 PPB
2:00 AM TIM PM10 24 Good 11 12 µg/m3
2:00 AM TIM PM2.5 24 Good 33 6 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 41 44 PPB
2:00 AM WBY PM10 24 Good 20 22 µg/m3
2:00 AM WBY PM2.5 24 Good 45 8 µg/m3
1:00 AM ACAD O3 8 Good 45 49 PPB
1:00 AM ACC PM10 24 Good 12 13 µg/m3
1:00 AM ACC PM2.5 24 Good 39 7 µg/m3
1:00 AM ADB PM10 24 Good 26 28 µg/m3
1:00 AM ADB PM2.5 24 Good 49 8 µg/m3
1:00 AM ALA PM10 24 Good 15 16 µg/m3
1:00 AM ALA PM2.5 24 Good 28 5 µg/m3
1:00 AM ASPN O3 8 Good 20 22 PPB
1:00 AM ASPN2 PM10 24 Good 8 9 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 20 3 µg/m3
1:00 AM BHWK O3 8 Good 38 41 PPB
1:00 AM BOU PM10 24 Good 14 15 µg/m3
1:00 AM BOU PM2.5 24 Good 38 6 µg/m3
1:00 AM BOUR O3 8 Good 44 48 PPB
1:00 AM CAMP NO2 1 Good 12 13 PPB
1:00 AM CAMP NO2 1 Good 12 13 PPB
1:00 AM CAMP O3 8 Good 42 45 PPB
1:00 AM CAMP PM10 24 Good 19 21 µg/m3
1:00 AM CAMP PM2.5 24 Moderate 51 9 µg/m3
1:00 AM CAMP SO2 1 Good 1 1 PPB
1:00 AM CAMP SO2 1 Good 1 1 PPB
1:00 AM CAN PM10 24 Good 21 23 µg/m3
1:00 AM CAN PM2.5 24 Good 42 7 µg/m3
1:00 AM CASA CO 8 Good 2 0.2 PPM
1:00 AM CASA NO2 1 Good 8 9 PPB
1:00 AM CASA O3 8 Good 37 40 PPB
1:00 AM CASA PM10 24 Good 17 18 µg/m3
1:00 AM CASA PM2.5 24 Good 50 9 µg/m3
1:00 AM CCOL PM10 24 Good 15 16 µg/m3
1:00 AM CCOL PM2.5 24 Good 37 6 µg/m3
1:00 AM CHAT NO2 1 Good 6 6 PPB
1:00 AM CHAT O3 8 Good 44 47 PPB
1:00 AM CHAT PM10 24 Good 9 10 µg/m3
1:00 AM CHAT PM2.5 24 Good 32 5 µg/m3
1:00 AM CTZ O3 8 Good 31 33 PPB
1:00 AM DELT PM10 24 Good 11 12 µg/m3
1:00 AM DELT PM2.5 24 Good 26 4 µg/m3
1:00 AM DELT PM2.5 24 Good 26 4 µg/m3
1:00 AM EVG O3 8 Good 26 28 PPB
1:00 AM FOS NO2 1 Good 3 3 PPB
1:00 AM FOS O3 8 Good 50 54 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 43 46 PPB
1:00 AM FTCF PM10 24 Good 14 15 µg/m3
1:00 AM FTCF PM2.5 24 Good 45 8 µg/m3
1:00 AM FTCW NO2 1 Good 3 3 PPB
1:00 AM FTCW O3 8 Good 44 47 PPB
1:00 AM GREH PM10 24 Good 14 15 µg/m3
1:00 AM GREH PM2.5 24 Good 41 7 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 46 50 PPB
1:00 AM HLD O3 8 Moderate 51 55 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 20 22 µg/m3
1:00 AM I25DEN PM2.5 24 Moderate 53 10 µg/m3
1:00 AM I25GLO NO2 1 Good 9 10 PPB
1:00 AM I25GLO PM10 24 Good 23 25 µg/m3
1:00 AM I25GLO PM2.5 24 Moderate 52 9 µg/m3
1:00 AM LAST NO2 1 Good 8 8 PPB
1:00 AM LAST O3 8 Good 36 39 PPB
1:00 AM LMB PM10 24 Good 33 36 µg/m3
1:00 AM LMB PM2.5 24 Good 46 8 µg/m3
1:00 AM LNGM PM10 24 Good 19 21 µg/m3
1:00 AM LNGM PM2.5 24 Moderate 52 9 µg/m3
1:00 AM MAN O3 8 Moderate 54 56 PPB
1:00 AM MFP NO2 1 Good 2 2 PPB
1:00 AM MFP O3 8 Moderate 61 58 PPB
1:00 AM NJH PM10 24 Good 14 15 µg/m3
1:00 AM NJH PM2.5 24 Good 42 7 µg/m3
1:00 AM NREL O3 8 Good 46 50 PPB
1:00 AM PAG PM10 24 Good 14 15 µg/m3
1:00 AM PAG PM2.5 24 Good 22 4 µg/m3
1:00 AM PAL O3 8 Good 44 47 PPB
1:00 AM PFS PM10 24 Good 19 20 µg/m3
1:00 AM PFS PM2.5 24 Good 38 6 µg/m3
1:00 AM PMS PM2.5 24 Moderate 51 9 µg/m3
1:00 AM PWES O3 8 Good 48 52 PPB
1:00 AM RFN NO2 1 Good 2 2 PPB
1:00 AM RFN O3 8 Good 49 53 PPB
1:00 AM RIFLO3 O3 8 Good 26 28 PPB
1:00 AM SSMB PM10 24 Good 9 10 µg/m3
1:00 AM SSMB PM2.5 24 Good 26 4 µg/m3
1:00 AM TEL PM10 24 Good 12 13 µg/m3
1:00 AM TEL PM2.5 24 Good 19 3 µg/m3
1:00 AM TIM NO2 1 Good 2 2 PPB
1:00 AM TIM O3 8 Good 50 54 PPB
1:00 AM TIM PM10 24 Good 11 12 µg/m3
1:00 AM TIM PM2.5 24 Good 34 6 µg/m3
1:00 AM WBY NO2 1 Good 7 7 PPB
1:00 AM WBY NO2 1 Good 7 7 PPB
1:00 AM WBY O3 8 Good 44 47 PPB
1:00 AM WBY PM10 24 Good 20 22 µg/m3
1:00 AM WBY PM2.5 24 Good 45 8 µg/m3

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