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AQI Calculations on 05/12/2026 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 27 29 PPB
3:00 AM ACC PM10 24 Good 9 10 µg/m3
3:00 AM ACC PM2.5 24 Good 20 3 µg/m3
3:00 AM ADB PM10 24 Good 31 33 µg/m3
3:00 AM ADB PM2.5 24 Good 33 5 µg/m3
3:00 AM ALA PM10 24 Good 22 24 µg/m3
3:00 AM ALA PM2.5 24 Good 27 4 µg/m3
3:00 AM ASPN O3 8 Good 44 47 PPB
3:00 AM ASPN2 PM10 24 Good 15 16 µg/m3
3:00 AM ASPN2 PM2.5 24 Good 18 3 µg/m3
3:00 AM AURE O3 8 Moderate 58 57 PPB
3:00 AM BHWK O3 8 Moderate 74 62 PPB
3:00 AM BOU PM10 24 Good 13 14 µg/m3
3:00 AM BOU PM2.5 24 Good 19 3 µg/m3
3:00 AM BOUR O3 8 Good 48 52 PPB
3:00 AM CAMP NO2 1 Good 8 8 PPB
3:00 AM CAMP NO2 1 Good 8 8 PPB
3:00 AM CAMP O3 8 Good 37 40 PPB
3:00 AM CAMP PM10 24 Good 9 10 µg/m3
3:00 AM CAMP PM2.5 24 Good 22 4 µg/m3
3:00 AM CAMP SO2 1 Good 1 1 PPB
3:00 AM CAMP SO2 1 Good 1 1 PPB
3:00 AM CAN PM10 24 Good 16 17 µg/m3
3:00 AM CAN PM2.5 24 Good 23 4 µg/m3
3:00 AM CASA CO 8 Good 2 0.2 PPM
3:00 AM CASA NO2 1 Good 12 13 PPB
3:00 AM CASA O3 8 Good 32 35 PPB
3:00 AM CASA PM10 24 Good 19 21 µg/m3
3:00 AM CASA PM2.5 24 Good 27 4 µg/m3
3:00 AM CASA SO2 1 Good 1 1 PPB
3:00 AM CCOL PM10 24 Good 19 21 µg/m3
3:00 AM CCOL PM2.5 24 Good 29 5 µg/m3
3:00 AM CHAT O3 8 Good 42 45 PPB
3:00 AM CHAT PM10 24 Good 14 15 µg/m3
3:00 AM CHAT PM2.5 24 Good 22 3 µg/m3
3:00 AM CTZ O3 8 Good 36 39 PPB
3:00 AM DELT PM10 24 Good 25 27 µg/m3
3:00 AM DELT PM2.5 24 Good 26 4 µg/m3
3:00 AM DELT PM2.5 24 Good 26 4 µg/m3
3:00 AM EVG O3 8 Good 45 49 PPB
3:00 AM FOS NO2 1 Good 3 3 PPB
3:00 AM FTC CO 8 Good 2 0.2 PPM
3:00 AM FTC O3 8 Good 31 33 PPB
3:00 AM FTCF PM10 24 Good 10 11 µg/m3
3:00 AM FTCF PM2.5 24 Good 27 4 µg/m3
3:00 AM FTCW O3 8 Moderate 64 59 PPB
3:00 AM GJPB PM10 24 Good 8 9 µg/m3
3:00 AM GJPB PM2.5 24 Good 21 3 µg/m3
3:00 AM GREH PM10 24 Good 8 9 µg/m3
3:00 AM GREH PM2.5 24 Good 24 4 µg/m3
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM GRET O3 8 Good 48 52 PPB
3:00 AM HLD O3 8 Moderate 64 59 PPB
3:00 AM I25DEN CO 8 Good 3 0.3 PPM
3:00 AM I25DEN NO2 1 Good 14 15 PPB
3:00 AM I25DEN PM10 24 Good 21 23 µg/m3
3:00 AM I25DEN PM2.5 24 Good 29 5 µg/m3
3:00 AM I25GLO NO2 1 Good 22 23 PPB
3:00 AM I25GLO PM10 24 Good 33 36 µg/m3
3:00 AM I25GLO PM2.5 24 Good 34 6 µg/m3
3:00 AM LAST NO2 1 Good 7 7 PPB
3:00 AM LAST O3 8 Good 42 45 PPB
3:00 AM LMB PM10 24 Good 16 17 µg/m3
3:00 AM LMB PM2.5 24 Good 26 4 µg/m3
3:00 AM LNGM PM10 24 Good 19 20 µg/m3
3:00 AM LNGM PM2.5 24 Good 28 5 µg/m3
3:00 AM MAN O3 8 Moderate 58 57 PPB
3:00 AM MFP NO2 1 Good 1 1 PPB
3:00 AM MFP O3 8 Moderate 64 59 PPB
3:00 AM NJH PM10 24 Good 16 17 µg/m3
3:00 AM NJH PM2.5 24 Good 26 4 µg/m3
3:00 AM NREL O3 8 Moderate 71 61 PPB
3:00 AM PAG PM10 24 Good 19 21 µg/m3
3:00 AM PAG PM2.5 24 Good 24 4 µg/m3
3:00 AM PAL O3 8 Good 43 46 PPB
3:00 AM PFS PM10 24 Good 16 17 µg/m3
3:00 AM PFS PM2.5 24 Good 26 4 µg/m3
3:00 AM PMS PM2.5 24 Good 27 4 µg/m3
3:00 AM PWES O3 8 Good 43 46 PPB
3:00 AM RFN O3 8 Moderate 80 64 PPB
3:00 AM RIFL PM2.5 24 Good 16 2 µg/m3
3:00 AM RIFLO3 O3 8 Good 31 34 PPB
3:00 AM SSMB PM10 24 Good 15 16 µg/m3
3:00 AM SSMB PM2.5 24 Good 23 4 µg/m3
3:00 AM TEL PM10 24 Good 13 14 µg/m3
3:00 AM TEL PM2.5 24 Good 18 3 µg/m3
3:00 AM TIM NO2 1 Good 1 1 PPB
3:00 AM TIM O3 8 Good 31 34 PPB
3:00 AM TIM PM10 24 Good 14 15 µg/m3
3:00 AM TIM PM2.5 24 Good 28 5 µg/m3
3:00 AM WBY NO2 1 Good 37 39 PPB
3:00 AM WBY NO2 1 Good 37 39 PPB
3:00 AM WBY O3 8 Good 27 29 PPB
3:00 AM WBY PM10 24 Good 25 27 µg/m3
3:00 AM WBY PM2.5 24 Good 29 5 µg/m3
2:00 AM ACAD O3 8 Good 30 32 PPB
2:00 AM ACC PM10 24 Good 9 10 µg/m3
2:00 AM ACC PM2.5 24 Good 20 3 µg/m3
2:00 AM ADB PM10 24 Good 30 32 µg/m3
2:00 AM ADB PM2.5 24 Good 33 5 µg/m3
2:00 AM ALA PM10 24 Good 21 23 µg/m3
2:00 AM ALA PM2.5 24 Good 27 4 µg/m3
2:00 AM ASPN O3 8 Good 45 49 PPB
2:00 AM ASPN2 PM10 24 Good 14 15 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 18 3 µg/m3
2:00 AM AURE O3 8 Moderate 61 58 PPB
2:00 AM BHWK O3 8 Moderate 74 62 PPB
2:00 AM BOU PM10 24 Good 13 14 µg/m3
2:00 AM BOU PM2.5 24 Good 19 3 µg/m3
2:00 AM BOUR O3 8 Good 49 53 PPB
2:00 AM CAMP NO2 1 Good 8 8 PPB
2:00 AM CAMP NO2 1 Good 8 8 PPB
2:00 AM CAMP O3 8 Good 39 42 PPB
2:00 AM CAMP PM10 24 Good 9 10 µg/m3
2:00 AM CAMP PM2.5 24 Good 22 3 µg/m3
2:00 AM CAMP SO2 1 Good 1 1 PPB
2:00 AM CAMP SO2 1 Good 1 1 PPB
2:00 AM CAN PM10 24 Good 15 16 µg/m3
2:00 AM CAN PM2.5 24 Good 23 4 µg/m3
2:00 AM CASA CO 8 Good 2 0.2 PPM
2:00 AM CASA NO2 1 Good 17 18 PPB
2:00 AM CASA O3 8 Good 35 38 PPB
2:00 AM CASA PM10 24 Good 19 20 µg/m3
2:00 AM CASA PM2.5 24 Good 27 4 µg/m3
2:00 AM CCOL PM10 24 Good 19 21 µg/m3
2:00 AM CCOL PM2.5 24 Good 29 5 µg/m3
2:00 AM CHAT O3 8 Good 44 48 PPB
2:00 AM CHAT PM10 24 Good 14 15 µg/m3
2:00 AM CHAT PM2.5 24 Good 22 3 µg/m3
2:00 AM CTZ O3 8 Good 40 43 PPB
2:00 AM DELT PM10 24 Good 24 26 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 47 51 PPB
2:00 AM FOS NO2 1 Good 4 4 PPB
2:00 AM FTC CO 8 Good 2 0.2 PPM
2:00 AM FTC O3 8 Good 33 36 PPB
2:00 AM FTCF PM10 24 Good 10 11 µg/m3
2:00 AM FTCF PM2.5 24 Good 27 4 µg/m3
2:00 AM FTCW O3 8 Moderate 71 61 PPB
2:00 AM GJPB PM10 24 Good 8 9 µg/m3
2:00 AM GJPB PM2.5 24 Good 21 3 µg/m3
2:00 AM GREH PM10 24 Good 8 9 µg/m3
2:00 AM GREH PM2.5 24 Good 25 4 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 50 54 PPB
2:00 AM HLD O3 8 Moderate 71 61 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 21 23 µg/m3
2:00 AM I25DEN PM2.5 24 Good 29 5 µg/m3
2:00 AM I25GLO NO2 1 Good 23 24 PPB
2:00 AM I25GLO PM10 24 Good 33 36 µg/m3
2:00 AM I25GLO PM2.5 24 Good 34 6 µg/m3
2:00 AM LAST NO2 1 Good 7 7 PPB
2:00 AM LAST O3 8 Good 45 49 PPB
2:00 AM LMB PM10 24 Good 16 17 µg/m3
2:00 AM LMB PM2.5 24 Good 26 4 µg/m3
2:00 AM LNGM PM10 24 Good 18 19 µg/m3
2:00 AM LNGM PM2.5 24 Good 28 5 µg/m3
2:00 AM MAN O3 8 Moderate 61 58 PPB
2:00 AM MFP O3 8 Moderate 71 61 PPB
2:00 AM NJH PM10 24 Good 16 17 µg/m3
2:00 AM NJH PM2.5 24 Good 26 4 µg/m3
2:00 AM NREL O3 8 Moderate 71 61 PPB
2:00 AM PAG PM10 24 Good 19 21 µg/m3
2:00 AM PAG PM2.5 24 Good 24 4 µg/m3
2:00 AM PAL O3 8 Good 46 50 PPB
2:00 AM PFS PM10 24 Good 16 17 µg/m3
2:00 AM PFS PM2.5 24 Good 26 4 µg/m3
2:00 AM PMS PM2.5 24 Good 27 4 µg/m3
2:00 AM PWES O3 8 Good 44 48 PPB
2:00 AM RFN O3 8 Moderate 84 65 PPB
2:00 AM RIFL PM2.5 24 Good 16 2 µg/m3
2:00 AM RIFLO3 O3 8 Good 34 37 PPB
2:00 AM SSMB PM10 24 Good 15 16 µg/m3
2:00 AM SSMB PM2.5 24 Good 23 4 µg/m3
2:00 AM TEL PM10 24 Good 13 14 µg/m3
2:00 AM TEL PM2.5 24 Good 18 3 µg/m3
2:00 AM TIM NO2 1 Good 6 6 PPB
2:00 AM TIM O3 8 Good 33 36 PPB
2:00 AM TIM PM10 24 Good 14 15 µg/m3
2:00 AM TIM PM2.5 24 Good 29 5 µg/m3
2:00 AM WBY NO2 1 Good 31 33 PPB
2:00 AM WBY NO2 1 Good 31 33 PPB
2:00 AM WBY O3 8 Good 34 37 PPB
2:00 AM WBY PM10 24 Good 24 26 µg/m3
2:00 AM WBY PM2.5 24 Good 28 5 µg/m3
1:00 AM ACAD O3 8 Good 33 36 PPB
1:00 AM ACC PM10 24 Good 9 10 µg/m3
1:00 AM ACC PM2.5 24 Good 19 3 µg/m3
1:00 AM ADB PM10 24 Good 30 32 µg/m3
1:00 AM ADB PM2.5 24 Good 33 5 µg/m3
1:00 AM ALA PM10 24 Good 21 23 µg/m3
1:00 AM ALA PM2.5 24 Good 28 5 µg/m3
1:00 AM ASPN O3 8 Good 46 50 PPB
1:00 AM ASPN2 PM10 24 Good 14 15 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 17 3 µg/m3
1:00 AM AURE O3 8 Moderate 71 61 PPB
1:00 AM BHWK O3 8 Moderate 74 62 PPB
1:00 AM BOU PM10 24 Good 13 14 µg/m3
1:00 AM BOU PM2.5 24 Good 19 3 µg/m3
1:00 AM BOUR O3 8 Moderate 51 55 PPB
1:00 AM CAMP NO2 1 Good 6 6 PPB
1:00 AM CAMP NO2 1 Good 6 6 PPB
1:00 AM CAMP O3 8 Good 41 44 PPB
1:00 AM CAMP PM10 24 Good 9 10 µg/m3
1:00 AM CAMP PM2.5 24 Good 22 3 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 15 16 µg/m3
1:00 AM CAN PM2.5 24 Good 24 4 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 39 42 PPB
1:00 AM CASA PM10 24 Good 19 20 µg/m3
1:00 AM CASA PM2.5 24 Good 27 4 µg/m3
1:00 AM CCOL PM10 24 Good 19 21 µg/m3
1:00 AM CCOL PM2.5 24 Good 29 5 µg/m3
1:00 AM CHAT O3 8 Good 49 53 PPB
1:00 AM CHAT PM10 24 Good 13 14 µg/m3
1:00 AM CHAT PM2.5 24 Good 22 3 µg/m3
1:00 AM CTZ O3 8 Good 44 48 PPB
1:00 AM DELT PM10 24 Good 24 26 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 50 54 PPB
1:00 AM FOS NO2 1 Good 1 1 PPB
1:00 AM FTC CO 8 Good 2 0.2 PPM
1:00 AM FTC O3 8 Good 39 42 PPB
1:00 AM FTCF PM10 24 Good 10 11 µg/m3
1:00 AM FTCF PM2.5 24 Good 27 4 µg/m3
1:00 AM FTCW O3 8 Moderate 77 63 PPB
1:00 AM GJPB PM10 24 Good 8 9 µg/m3
1:00 AM GJPB PM2.5 24 Good 20 3 µg/m3
1:00 AM GREH PM10 24 Good 8 9 µg/m3
1:00 AM GREH PM2.5 24 Good 26 4 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Moderate 61 58 PPB
1:00 AM HLD O3 8 Moderate 77 63 PPB
1:00 AM I25DEN CO 8 Good 5 0.4 PPM
1:00 AM I25DEN NO2 1 Good 15 16 PPB
1:00 AM I25DEN PM10 24 Good 21 23 µg/m3
1:00 AM I25DEN PM2.5 24 Good 29 5 µg/m3
1:00 AM I25GLO NO2 1 Good 21 22 PPB
1:00 AM I25GLO PM10 24 Good 31 34 µg/m3
1:00 AM I25GLO PM2.5 24 Good 33 6 µg/m3
1:00 AM LAST NO2 1 Good 8 9 PPB
1:00 AM LAST O3 8 Good 49 53 PPB
1:00 AM LMB PM10 24 Good 16 17 µg/m3
1:00 AM LMB PM2.5 24 Good 26 4 µg/m3
1:00 AM LNGM PM10 24 Good 18 19 µg/m3
1:00 AM LNGM PM2.5 24 Good 28 5 µg/m3
1:00 AM MAN O3 8 Moderate 64 59 PPB
1:00 AM MFP O3 8 Moderate 74 62 PPB
1:00 AM NJH PM10 24 Good 16 17 µg/m3
1:00 AM NJH PM2.5 24 Good 26 4 µg/m3
1:00 AM NREL O3 8 Moderate 74 62 PPB
1:00 AM PAG PM10 24 Good 19 21 µg/m3
1:00 AM PAG PM2.5 24 Good 24 4 µg/m3
1:00 AM PAL O3 8 Good 49 53 PPB
1:00 AM PFS PM10 24 Good 16 17 µg/m3
1:00 AM PFS PM2.5 24 Good 27 4 µg/m3
1:00 AM PMS PM2.5 24 Good 27 4 µg/m3
1:00 AM PWES O3 8 Good 46 50 PPB
1:00 AM RFN O3 8 Moderate 84 65 PPB
1:00 AM RIFL PM2.5 24 Good 17 3 µg/m3
1:00 AM RIFLO3 O3 8 Good 39 42 PPB
1:00 AM SSMB PM10 24 Good 15 16 µg/m3
1:00 AM SSMB PM2.5 24 Good 23 4 µg/m3
1:00 AM TEL PM10 24 Good 13 14 µg/m3
1:00 AM TEL PM2.5 24 Good 18 3 µg/m3
1:00 AM TIM NO2 1 Good 6 6 PPB
1:00 AM TIM O3 8 Good 40 43 PPB
1:00 AM TIM PM10 24 Good 14 15 µg/m3
1:00 AM TIM PM2.5 24 Good 30 5 µg/m3
1:00 AM WBY NO2 1 Good 24 25 PPB
1:00 AM WBY NO2 1 Good 24 25 PPB
1:00 AM WBY O3 8 Good 42 45 PPB
1:00 AM WBY PM10 24 Good 23 25 µg/m3
1:00 AM WBY PM2.5 24 Good 28 5 µg/m3

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