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AQI Calculations on 04/19/2024 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.

Click on the column headings to sort data.

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 ASPN2 PM2.5 24 Good 0 0 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 0 0 µg/m3
2:00 AM CASA CO 8 Good 1 0.1 PPM
2:00 AM CCOL CO 8 Good 1 0.1 PPM
2:00 AM FTC CO 8 Good 1 0.1 PPM
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM I25DEN CO 8 Good 1 0.1 PPM
1:00 AM CASA CO 8 Good 1 0.1 PPM
1:00 AM CCOL CO 8 Good 1 0.1 PPM
1:00 AM FTC CO 8 Good 1 0.1 PPM
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM I25DEN CO 8 Good 1 0.1 PPM
1:00 AM RFN NO2 1 Good 1 1 PPB
2:00 AM RFN NO2 1 Good 2 2 PPB
2:00 AM WBY NO2 1 Good 2 2 PPB
2:00 AM WBY NO2 1 Good 2 2 PPB
1:00 AM WBY NO2 1 Good 2 2 PPB
1:00 AM WBY NO2 1 Good 2 2 PPB
2:00 AM CCOL PM10 24 Good 3 3 µg/m3
2:00 AM CHAT PM10 24 Good 3 3 µg/m3
2:00 AM I25DEN PM10 24 Good 3 3 µg/m3
2:00 AM LAST NO2 1 Good 3 3 PPB
1:00 AM CCOL PM10 24 Good 3 3 µg/m3
1:00 AM CHAT PM10 24 Good 3 3 µg/m3
1:00 AM GREH PM10 24 Good 3 3 µg/m3
1:00 AM I25DEN PM10 24 Good 3 3 µg/m3
1:00 AM LAST NO2 1 Good 3 3 PPB
2:00 AM CAMP PM10 24 Good 4 4 µg/m3
2:00 AM GREH PM10 24 Good 4 4 µg/m3
2:00 AM I25GLO PM10 24 Good 4 4 µg/m3
1:00 AM CAMP PM10 24 Good 4 4 µg/m3
1:00 AM I25GLO NO2 1 Good 4 4 PPB
1:00 AM I25GLO PM10 24 Good 4 4 µg/m3
2:00 AM CASA PM10 24 Good 5 5 µg/m3
1:00 AM CASA PM10 24 Good 5 5 µg/m3
1:00 AM NJH PM10 24 Good 5 5 µg/m3
2:00 AM BOU PM10 24 Good 6 6 µg/m3
2:00 AM FTCF PM10 24 Good 6 7 µg/m3
2:00 AM NJH PM10 24 Good 6 6 µg/m3
2:00 AM WBY PM10 24 Good 6 6 µg/m3
1:00 AM BOU PM10 24 Good 6 6 µg/m3
1:00 AM CAMP NO2 1 Good 6 6 PPB
1:00 AM CAMP NO2 1 Good 6 6 PPB
1:00 AM FTCF PM10 24 Good 6 7 µg/m3
1:00 AM WBY PM10 24 Good 6 6 µg/m3
2:00 AM CAMP NO2 1 Good 7 7 PPB
2:00 AM CAMP NO2 1 Good 7 7 PPB
1:00 AM I25DEN NO2 1 Good 7 7 PPB
1:00 AM LNGM PM10 24 Good 7 8 µg/m3
2:00 AM ADB PM10 24 Good 8 9 µg/m3
2:00 AM GJPB PM10 24 Good 8 9 µg/m3
2:00 AM I25GLO NO2 1 Good 8 9 PPB
2:00 AM LNGM PM10 24 Good 8 9 µg/m3
1:00 AM ADB PM10 24 Good 8 9 µg/m3
1:00 AM CASA NO2 1 Good 8 9 PPB
1:00 AM GJPB PM10 24 Good 8 9 µg/m3
2:00 AM SSMB PM10 24 Good 9 10 µg/m3
1:00 AM PFS PM10 24 Good 9 10 µg/m3
1:00 AM SSMB PM10 24 Good 9 10 µg/m3
2:00 AM CCOL PM2.5 24 Good 10 2 µg/m3
2:00 AM CHAT PM2.5 24 Good 10 3 µg/m3
2:00 AM GJPB PM2.5 24 Good 10 2 µg/m3
2:00 AM I25DEN NO2 1 Good 10 11 PPB
2:00 AM LMB PM10 24 Good 10 11 µg/m3
2:00 AM LMB PM2.5 24 Good 10 3 µg/m3
2:00 AM PFS PM10 24 Good 10 11 µg/m3
2:00 AM PFS PM2.5 24 Good 10 3 µg/m3
1:00 AM CCOL PM2.5 24 Good 10 2 µg/m3
1:00 AM CHAT PM2.5 24 Good 10 3 µg/m3
1:00 AM GJPB PM2.5 24 Good 10 2 µg/m3
1:00 AM PFS PM2.5 24 Good 10 3 µg/m3
2:00 AM CAN PM10 24 Good 11 12 µg/m3
1:00 AM CAN PM10 24 Good 11 12 µg/m3
1:00 AM LMB PM2.5 24 Good 11 3 µg/m3
2:00 AM CASA NO2 1 Good 12 13 PPB
2:00 AM ASPN2 PM10 24 Good 13 14 µg/m3
1:00 AM ASPN2 PM10 24 Good 13 14 µg/m3
1:00 AM NJH PM2.5 24 Good 13 3 µg/m3
2:00 AM CASA PM2.5 24 Good 14 3 µg/m3
2:00 AM NJH PM2.5 24 Good 14 3 µg/m3
2:00 AM TEL PM10 24 Good 14 15 µg/m3
1:00 AM CASA PM2.5 24 Good 14 3 µg/m3
1:00 AM GREH PM2.5 24 Good 14 3 µg/m3
1:00 AM LMB PM10 24 Good 14 15 µg/m3
1:00 AM TEL PM10 24 Good 14 15 µg/m3
2:00 AM GREH PM2.5 24 Good 15 4 µg/m3
1:00 AM ADB PM2.5 24 Good 15 4 µg/m3
1:00 AM I25DEN PM2.5 24 Good 15 4 µg/m3
1:00 AM I25GLO PM2.5 24 Good 15 4 µg/m3
2:00 AM ADB PM2.5 24 Good 16 4 µg/m3
2:00 AM BOU PM2.5 24 Good 16 4 µg/m3
2:00 AM CAMP PM2.5 24 Good 16 4 µg/m3
2:00 AM I25DEN PM2.5 24 Good 16 4 µg/m3
2:00 AM I25GLO PM2.5 24 Good 16 4 µg/m3
1:00 AM BOU PM2.5 24 Good 16 4 µg/m3
1:00 AM CAMP PM2.5 24 Good 16 4 µg/m3
2:00 AM ALA PM2.5 24 Good 17 4 µg/m3
1:00 AM ALA PM2.5 24 Good 17 4 µg/m3
2:00 AM BHWK O3 8 Good 18 19 PPB
2:00 AM CASA O3 8 Good 18 19 PPB
1:00 AM BHWK O3 8 Good 18 19 PPB
1:00 AM CASA O3 8 Good 18 19 PPB
2:00 AM EVG O3 8 Good 19 20 PPB
2:00 AM FTC O3 8 Good 19 21 PPB
2:00 AM HLD O3 8 Good 19 20 PPB
1:00 AM EVG O3 8 Good 19 20 PPB
1:00 AM HLD O3 8 Good 19 20 PPB
1:00 AM LNGM PM2.5 24 Good 19 5 µg/m3
1:00 AM NREL O3 8 Good 19 21 PPB
2:00 AM CAMP O3 8 Good 20 22 PPB
2:00 AM FTCW O3 8 Good 20 22 PPB
2:00 AM LNGM PM2.5 24 Good 20 5 µg/m3
2:00 AM NREL O3 8 Good 20 22 PPB
1:00 AM CAMP O3 8 Good 20 22 PPB
1:00 AM FTC O3 8 Good 20 22 PPB
1:00 AM FTCW O3 8 Good 21 23 PPB
2:00 AM CHAT O3 8 Good 22 24 PPB
1:00 AM CHAT O3 8 Good 22 24 PPB
1:00 AM FTCF PM2.5 24 Good 23 6 µg/m3
2:00 AM BOUR O3 8 Good 24 26 PPB
1:00 AM BOUR O3 8 Good 24 26 PPB
2:00 AM ACAD O3 8 Good 25 27 PPB
2:00 AM AURE O3 8 Good 25 27 PPB
2:00 AM FTCF PM2.5 24 Good 25 6 µg/m3
2:00 AM GRET O3 8 Good 25 27 PPB
2:00 AM RFN O3 8 Good 25 27 PPB
2:00 AM WBY O3 8 Good 25 27 PPB
1:00 AM ACAD O3 8 Good 25 27 PPB
1:00 AM AURE O3 8 Good 25 27 PPB
1:00 AM GRET O3 8 Good 25 27 PPB
1:00 AM RFN O3 8 Good 25 27 PPB
1:00 AM WBY O3 8 Good 25 27 PPB
2:00 AM LAST O3 8 Good 26 28 PPB
1:00 AM LAST O3 8 Good 26 28 PPB
2:00 AM CTZ O3 8 Good 28 30 PPB
2:00 AM MAN O3 8 Good 29 31 PPB
2:00 AM PAG PM10 24 Good 30 32 µg/m3
1:00 AM MAN O3 8 Good 30 32 PPB
1:00 AM PAG PM10 24 Good 30 32 µg/m3
2:00 AM ALA PM10 24 Good 31 34 µg/m3
1:00 AM ALA PM10 24 Good 31 34 µg/m3
1:00 AM CTZ O3 8 Good 31 33 PPB
2:00 AM PWES O3 8 Good 32 35 PPB
1:00 AM PWES O3 8 Good 33 36 PPB
2:00 AM RIFLO3 O3 8 Good 34 37 PPB
1:00 AM RIFLO3 O3 8 Good 35 38 PPB
2:00 AM ASPN O3 8 Good 37 40 PPB
1:00 AM ASPN O3 8 Good 39 42 PPB
2:00 AM PAL O3 8 Good 41 44 PPB
1:00 AM PAL O3 8 Good 41 44 PPB

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