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AQI Calculations on 11/20/2024 1:00AM - 4:00AM

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.
4:00 AM ACAD O3 8 Good 34 37 PPB
4:00 AM ACC PM10 24 Good 9 10 µg/m3
4:00 AM ACC PM2.5 24 Good 12 2 µg/m3
4:00 AM ADB PM10 24 Good 33 36 µg/m3
4:00 AM ADB PM2.5 24 Good 17 3 µg/m3
4:00 AM ALA PM10 24 Good 10 11 µg/m3
4:00 AM ALA PM2.5 24 Good 14 3 µg/m3
4:00 AM ASPN O3 8 Good 37 40 PPB
4:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
4:00 AM ASPN2 PM2.5 24 Good 7 1 µg/m3
4:00 AM AURE O3 8 Good 33 36 PPB
4:00 AM BHWK O3 8 Good 41 44 PPB
4:00 AM BOU PM10 24 Good 8 9 µg/m3
4:00 AM BOU PM2.5 24 Good 7 1 µg/m3
4:00 AM BOUR O3 8 Good 38 41 PPB
4:00 AM CAMP NO2 1 Good 20 21 PPB
4:00 AM CAMP NO2 1 Good 20 21 PPB
4:00 AM CAMP O3 8 Good 28 30 PPB
4:00 AM CAMP PM10 24 Good 6 6 µg/m3
4:00 AM CAMP PM2.5 24 Good 9 2 µg/m3
4:00 AM CAN PM10 24 Good 8 9 µg/m3
4:00 AM CASA CO 8 Good 1 0.1 PPM
4:00 AM CASA NO2 1 Good 28 30 PPB
4:00 AM CASA O3 8 Good 30 32 PPB
4:00 AM CASA PM10 24 Good 9 10 µg/m3
4:00 AM CASA PM2.5 24 Good 8 2 µg/m3
4:00 AM CCOL CO 8 Good 1 0.1 PPM
4:00 AM CCOL PM10 24 Good 6 7 µg/m3
4:00 AM CCOL PM2.5 24 Good 10 2 µg/m3
4:00 AM CHAT O3 8 Good 31 33 PPB
4:00 AM CHAT PM10 24 Good 8 9 µg/m3
4:00 AM CHAT PM2.5 24 Good 8 2 µg/m3
4:00 AM CTZ O3 8 Good 19 20 PPB
4:00 AM FTC CO 8 Good 1 0.1 PPM
4:00 AM FTC O3 8 Good 31 34 PPB
4:00 AM FTCF PM10 24 Good 4 4 µg/m3
4:00 AM FTCF PM2.5 24 Good 7 1 µg/m3
4:00 AM FTCW O3 8 Good 38 41 PPB
4:00 AM GJPB PM10 24 Good 7 8 µg/m3
4:00 AM GJPB PM2.5 24 Good 22 4 µg/m3
4:00 AM GREH PM10 24 Good 2 2 µg/m3
4:00 AM GREH PM2.5 24 Good 5 1 µg/m3
4:00 AM GRET CO 8 Good 1 0.1 PPM
4:00 AM GRET O3 8 Good 28 30 PPB
4:00 AM I25DEN CO 8 Good 2 0.2 PPM
4:00 AM I25DEN NO2 1 Good 29 31 PPB
4:00 AM I25DEN PM10 24 Good 11 12 µg/m3
4:00 AM I25DEN PM2.5 24 Good 18 3 µg/m3
4:00 AM I25GLO NO2 1 Good 35 37 PPB
4:00 AM I25GLO PM10 24 Good 14 15 µg/m3
4:00 AM I25GLO PM2.5 24 Good 18 3 µg/m3
4:00 AM LAST NO2 1 Good 8 8 PPB
4:00 AM LAST O3 8 Good 31 33 PPB
4:00 AM LMB PM10 24 Good 7 8 µg/m3
4:00 AM LMB PM2.5 24 Good 11 2 µg/m3
4:00 AM LNGM PM10 24 Good 16 17 µg/m3
4:00 AM LNGM PM2.5 24 Good 13 2 µg/m3
4:00 AM MAN O3 8 Good 38 41 PPB
4:00 AM NJH PM10 24 Good 8 9 µg/m3
4:00 AM NJH PM2.5 24 Good 8 2 µg/m3
4:00 AM NREL O3 8 Good 38 41 PPB
4:00 AM PAG PM10 24 Good 20 22 µg/m3
4:00 AM PAL O3 8 Good 31 33 PPB
4:00 AM PFS PM10 24 Good 12 13 µg/m3
4:00 AM PFS PM2.5 24 Good 14 3 µg/m3
4:00 AM PMS PM2.5 24 Good 10 2 µg/m3
4:00 AM PWES O3 8 Good 31 33 PPB
4:00 AM RFN O3 8 Good 38 41 PPB
4:00 AM RIFL PM2.5 24 Good 29 5 µg/m3
4:00 AM RIFLO3 O3 8 Good 15 16 PPB
4:00 AM SSMB PM10 24 Good 6 6 µg/m3
4:00 AM TEL PM10 24 Good 5 5 µg/m3
4:00 AM TIM NO2 1 Good 8 8 PPB
4:00 AM TIM O3 8 Good 31 34 PPB
4:00 AM WBY NO2 1 Good 20 21 PPB
4:00 AM WBY NO2 1 Good 20 21 PPB
4:00 AM WBY O3 8 Good 27 29 PPB
4:00 AM WBY PM10 24 Good 14 15 µg/m3
4:00 AM WBY PM2.5 24 Good 11 2 µg/m3
3:00 AM ACAD O3 8 Good 37 40 PPB
3:00 AM ACC PM10 24 Good 10 11 µg/m3
3:00 AM ACC PM2.5 24 Good 12 2 µg/m3
3:00 AM ADB PM10 24 Good 34 37 µg/m3
3:00 AM ADB PM2.5 24 Good 17 3 µg/m3
3:00 AM ALA PM10 24 Good 10 11 µg/m3
3:00 AM ALA PM2.5 24 Good 13 2 µg/m3
3:00 AM ASPN O3 8 Good 37 40 PPB
3:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
3:00 AM ASPN2 PM2.5 24 Good 7 1 µg/m3
3:00 AM AURE O3 8 Good 34 37 PPB
3:00 AM BHWK O3 8 Good 41 44 PPB
3:00 AM BOU PM10 24 Good 7 8 µg/m3
3:00 AM BOU PM2.5 24 Good 7 1 µg/m3
3:00 AM BOUR O3 8 Good 39 42 PPB
3:00 AM CAMP NO2 1 Good 10 11 PPB
3:00 AM CAMP NO2 1 Good 10 11 PPB
3:00 AM CAMP O3 8 Good 31 34 PPB
3:00 AM CAMP PM10 24 Good 6 6 µg/m3
3:00 AM CAMP PM2.5 24 Good 9 2 µg/m3
3:00 AM CAN PM10 24 Good 9 10 µg/m3
3:00 AM CASA CO 8 Good 1 0.1 PPM
3:00 AM CASA NO2 1 Good 14 15 PPB
3:00 AM CASA O3 8 Good 33 36 PPB
3:00 AM CASA PM10 24 Good 10 11 µg/m3
3:00 AM CASA PM2.5 24 Good 8 2 µg/m3
3:00 AM CCOL CO 8 Good 1 0.1 PPM
3:00 AM CCOL PM10 24 Good 7 8 µg/m3
3:00 AM CCOL PM2.5 24 Good 10 2 µg/m3
3:00 AM CHAT O3 8 Good 32 35 PPB
3:00 AM CHAT PM10 24 Good 9 10 µg/m3
3:00 AM CHAT PM2.5 24 Good 9 2 µg/m3
3:00 AM CTZ O3 8 Good 19 21 PPB
3:00 AM FTC CO 8 Good 1 0.1 PPM
3:00 AM FTC O3 8 Good 31 34 PPB
3:00 AM FTCF PM10 24 Good 4 4 µg/m3
3:00 AM FTCF PM2.5 24 Good 6 1 µg/m3
3:00 AM FTCW O3 8 Good 38 41 PPB
3:00 AM GJPB PM10 24 Good 7 8 µg/m3
3:00 AM GJPB PM2.5 24 Good 22 4 µg/m3
3:00 AM GREH PM10 24 Good 2 2 µg/m3
3:00 AM GREH PM2.5 24 Good 5 1 µg/m3
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM GRET O3 8 Good 30 32 PPB
3:00 AM I25DEN CO 8 Good 2 0.2 PPM
3:00 AM I25DEN NO2 1 Good 16 17 PPB
3:00 AM I25DEN PM10 24 Good 11 12 µg/m3
3:00 AM I25DEN PM2.5 24 Good 18 3 µg/m3
3:00 AM I25GLO NO2 1 Good 17 18 PPB
3:00 AM I25GLO PM10 24 Good 15 16 µg/m3
3:00 AM I25GLO PM2.5 24 Good 18 3 µg/m3
3:00 AM LAST NO2 1 Good 6 6 PPB
3:00 AM LAST O3 8 Good 31 34 PPB
3:00 AM LMB PM10 24 Good 7 8 µg/m3
3:00 AM LMB PM2.5 24 Good 11 2 µg/m3
3:00 AM LNGM PM10 24 Good 16 17 µg/m3
3:00 AM LNGM PM2.5 24 Good 12 2 µg/m3
3:00 AM MAN O3 8 Good 39 42 PPB
3:00 AM NJH PM10 24 Good 8 9 µg/m3
3:00 AM NJH PM2.5 24 Good 9 2 µg/m3
3:00 AM NREL O3 8 Good 39 42 PPB
3:00 AM PAG PM10 24 Good 20 22 µg/m3
3:00 AM PAL O3 8 Good 31 34 PPB
3:00 AM PFS PM10 24 Good 12 13 µg/m3
3:00 AM PFS PM2.5 24 Good 14 3 µg/m3
3:00 AM PMS PM2.5 24 Good 10 2 µg/m3
3:00 AM PWES O3 8 Good 31 34 PPB
3:00 AM RFN NO2 1 Good 1 1 PPB
3:00 AM RFN O3 8 Good 38 41 PPB
3:00 AM RIFL PM2.5 24 Good 28 5 µg/m3
3:00 AM RIFLO3 O3 8 Good 14 15 PPB
3:00 AM SSMB PM10 24 Good 6 6 µg/m3
3:00 AM TEL PM10 24 Good 6 6 µg/m3
3:00 AM TIM NO2 1 Good 4 4 PPB
3:00 AM TIM O3 8 Good 32 35 PPB
3:00 AM WBY NO2 1 Good 19 20 PPB
3:00 AM WBY NO2 1 Good 19 20 PPB
3:00 AM WBY O3 8 Good 30 32 PPB
3:00 AM WBY PM10 24 Good 15 16 µg/m3
3:00 AM WBY PM2.5 24 Good 11 2 µg/m3
2:00 AM ACAD O3 8 Good 39 42 PPB
2:00 AM ACC PM10 24 Good 11 12 µg/m3
2:00 AM ACC PM2.5 24 Good 13 2 µg/m3
2:00 AM ADB PM10 24 Good 34 37 µg/m3
2:00 AM ADB PM2.5 24 Good 17 3 µg/m3
2:00 AM ALA PM10 24 Good 9 10 µg/m3
2:00 AM ALA PM2.5 24 Good 13 2 µg/m3
2:00 AM ASPN O3 8 Good 36 39 PPB
2:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 7 1 µg/m3
2:00 AM AURE O3 8 Good 34 37 PPB
2:00 AM BHWK O3 8 Good 41 44 PPB
2:00 AM BOU PM10 24 Good 9 10 µg/m3
2:00 AM BOU PM2.5 24 Good 7 1 µg/m3
2:00 AM BOUR O3 8 Good 40 43 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 32 35 PPB
2:00 AM CAMP PM10 24 Good 6 7 µg/m3
2:00 AM CAMP PM2.5 24 Good 10 2 µg/m3
2:00 AM CAN PM10 24 Good 9 10 µg/m3
2:00 AM CASA CO 8 Good 1 0.1 PPM
2:00 AM CASA NO2 1 Good 15 16 PPB
2:00 AM CASA O3 8 Good 35 38 PPB
2:00 AM CASA PM10 24 Good 10 11 µg/m3
2:00 AM CASA PM2.5 24 Good 9 2 µg/m3
2:00 AM CCOL CO 8 Good 1 0.1 PPM
2:00 AM CCOL PM10 24 Good 7 8 µg/m3
2:00 AM CCOL PM2.5 24 Good 10 2 µg/m3
2:00 AM CHAT O3 8 Good 32 35 PPB
2:00 AM CHAT PM10 24 Good 10 11 µg/m3
2:00 AM CHAT PM2.5 24 Good 9 2 µg/m3
2:00 AM CTZ O3 8 Good 19 21 PPB
2:00 AM FOS O3 8 Good 38 41 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 4 4 µg/m3
2:00 AM FTCF PM2.5 24 Good 6 1 µg/m3
2:00 AM FTCW O3 8 Good 38 41 PPB
2:00 AM GJPB PM10 24 Good 7 8 µg/m3
2:00 AM GJPB PM2.5 24 Good 22 4 µg/m3
2:00 AM GREH PM10 24 Good 2 2 µg/m3
2:00 AM GREH PM2.5 24 Good 5 1 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 31 33 PPB
2:00 AM I25DEN CO 8 Good 2 0.2 PPM
2:00 AM I25DEN NO2 1 Good 18 19 PPB
2:00 AM I25DEN PM10 24 Good 12 13 µg/m3
2:00 AM I25DEN PM2.5 24 Good 19 3 µg/m3
2:00 AM I25GLO NO2 1 Good 19 20 PPB
2:00 AM I25GLO PM10 24 Good 15 16 µg/m3
2:00 AM I25GLO PM2.5 24 Good 18 3 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 8 9 µg/m3
2:00 AM LMB PM2.5 24 Good 11 2 µg/m3
2:00 AM LNGM PM10 24 Good 16 17 µg/m3
2:00 AM LNGM PM2.5 24 Good 12 2 µg/m3
2:00 AM MAN O3 8 Good 40 43 PPB
2:00 AM NJH PM10 24 Good 9 10 µg/m3
2:00 AM NJH PM2.5 24 Good 9 2 µg/m3
2:00 AM NREL O3 8 Good 40 43 PPB
2:00 AM PAG PM10 24 Good 20 22 µg/m3
2:00 AM PAL O3 8 Good 32 35 PPB
2:00 AM PFS PM10 24 Good 12 13 µg/m3
2:00 AM PFS PM2.5 24 Good 14 3 µg/m3
2:00 AM PMS PM2.5 24 Good 9 2 µg/m3
2:00 AM PWES O3 8 Good 32 35 PPB
2:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN O3 8 Good 38 41 PPB
2:00 AM RIFL PM2.5 24 Good 28 5 µg/m3
2:00 AM RIFLO3 O3 8 Good 14 15 PPB
2:00 AM SSMB PM10 24 Good 6 6 µg/m3
2:00 AM TEL PM10 24 Good 6 6 µg/m3
2:00 AM TIM NO2 1 Good 1 1 PPB
2:00 AM TIM O3 8 Good 32 35 PPB
2:00 AM WBY NO2 1 Good 27 29 PPB
2:00 AM WBY NO2 1 Good 27 29 PPB
2:00 AM WBY O3 8 Good 31 34 PPB
2:00 AM WBY PM10 24 Good 15 16 µg/m3
2:00 AM WBY PM2.5 24 Good 11 2 µg/m3
1:00 AM ACAD O3 8 Good 40 43 PPB
1:00 AM ACC PM10 24 Good 12 13 µg/m3
1:00 AM ACC PM2.5 24 Good 13 2 µg/m3
1:00 AM ADB PM10 24 Good 35 38 µg/m3
1:00 AM ADB PM2.5 24 Good 17 3 µg/m3
1:00 AM ALA PM10 24 Good 9 10 µg/m3
1:00 AM ALA PM2.5 24 Good 12 2 µg/m3
1:00 AM ASPN O3 8 Good 34 37 PPB
1:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 7 1 µg/m3
1:00 AM AURE O3 8 Good 35 38 PPB
1:00 AM BHWK O3 8 Good 41 44 PPB
1:00 AM BOU PM10 24 Good 11 12 µg/m3
1:00 AM BOU PM2.5 24 Good 7 1 µg/m3
1:00 AM BOUR O3 8 Good 40 43 PPB
1:00 AM CAMP NO2 1 Good 15 16 PPB
1:00 AM CAMP NO2 1 Good 15 16 PPB
1:00 AM CAMP O3 8 Good 33 36 PPB
1:00 AM CAMP PM10 24 Good 7 8 µg/m3
1:00 AM CAMP PM2.5 24 Good 10 2 µg/m3
1:00 AM CAN PM10 24 Good 9 10 µg/m3
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CASA NO2 1 Good 16 17 PPB
1:00 AM CASA O3 8 Good 37 40 PPB
1:00 AM CASA PM10 24 Good 11 12 µg/m3
1:00 AM CASA PM2.5 24 Good 9 2 µg/m3
1:00 AM CCOL CO 8 Good 1 0.1 PPM
1:00 AM CCOL PM10 24 Good 7 8 µg/m3
1:00 AM CCOL PM2.5 24 Good 11 2 µg/m3
1:00 AM CHAT O3 8 Good 34 37 PPB
1:00 AM CHAT PM10 24 Good 12 13 µg/m3
1:00 AM CHAT PM2.5 24 Good 9 2 µg/m3
1:00 AM CTZ O3 8 Good 21 23 PPB
1:00 AM FOS NO2 1 Good 2 2 PPB
1:00 AM FOS O3 8 Good 38 41 PPB
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM FTC O3 8 Good 33 36 PPB
1:00 AM FTCF PM10 24 Good 4 4 µg/m3
1:00 AM FTCF PM2.5 24 Good 6 1 µg/m3
1:00 AM FTCW O3 8 Good 39 42 PPB
1:00 AM GJPB PM10 24 Good 7 8 µg/m3
1:00 AM GJPB PM2.5 24 Good 22 4 µg/m3
1:00 AM GREH PM10 24 Good 2 2 µg/m3
1:00 AM GREH PM2.5 24 Good 4 1 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 31 34 PPB
1:00 AM I25DEN CO 8 Good 2 0.2 PPM
1:00 AM I25DEN NO2 1 Good 22 23 PPB
1:00 AM I25DEN PM10 24 Good 13 14 µg/m3
1:00 AM I25DEN PM2.5 24 Good 19 3 µg/m3
1:00 AM I25GLO NO2 1 Good 22 23 PPB
1:00 AM I25GLO PM10 24 Good 16 17 µg/m3
1:00 AM I25GLO PM2.5 24 Good 18 3 µg/m3
1:00 AM LAST NO2 1 Good 2 2 PPB
1:00 AM LAST O3 8 Good 31 34 PPB
1:00 AM LMB PM10 24 Good 8 9 µg/m3
1:00 AM LMB PM2.5 24 Good 11 2 µg/m3
1:00 AM LNGM PM10 24 Good 16 17 µg/m3
1:00 AM LNGM PM2.5 24 Good 13 2 µg/m3
1:00 AM MAN O3 8 Good 40 43 PPB
1:00 AM NJH PM10 24 Good 10 11 µg/m3
1:00 AM NJH PM2.5 24 Good 9 2 µg/m3
1:00 AM NREL O3 8 Good 40 43 PPB
1:00 AM PAG PM10 24 Good 20 22 µg/m3
1:00 AM PAL O3 8 Good 33 36 PPB
1:00 AM PFS PM10 24 Good 13 14 µg/m3
1:00 AM PFS PM2.5 24 Good 15 3 µg/m3
1:00 AM PMS PM2.5 24 Good 9 2 µg/m3
1:00 AM PWES O3 8 Good 33 36 PPB
1:00 AM RFN NO2 1 Good 1 1 PPB
1:00 AM RFN O3 8 Good 38 41 PPB
1:00 AM RIFL PM2.5 24 Good 26 5 µg/m3
1:00 AM RIFLO3 O3 8 Good 15 16 PPB
1:00 AM SSMB PM10 24 Good 6 6 µg/m3
1:00 AM TEL PM10 24 Good 6 6 µg/m3
1:00 AM TIM O3 8 Good 32 35 PPB
1:00 AM WBY NO2 1 Good 6 6 PPB
1:00 AM WBY NO2 1 Good 6 6 PPB
1:00 AM WBY O3 8 Good 35 38 PPB
1:00 AM WBY PM10 24 Good 16 17 µg/m3
1:00 AM WBY PM2.5 24 Good 11 2 µg/m3

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