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AQI Calculations on 01/16/2018 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.

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.
4:00 AM FTC CO 8 Good 1 0.1 PPM
4:00 AM GRET CO 8 Good 1 0.1 PPM
4:00 AM WBY CO 8 Good 1 0.1 PPM
3:00 AM CASA CO 8 Good 1 0.1 PPM
3:00 AM FTC CO 8 Good 1 0.1 PPM
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM WBY CO 8 Good 1 0.1 PPM
2:00 AM CASA 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 WBY CO 8 Good 1 0.1 PPM
1:00 AM CASA 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 WBY CO 8 Good 1 0.1 PPM
4:00 AM CAMP CO 8 Good 2 0.2 PPM
4:00 AM CASA CO 8 Good 2 0.2 PPM
4:00 AM I25DEN CO 8 Good 2 0.2 PPM
4:00 AM WBY PM10 24 Good 2 2 µg/m3
3:00 AM CAMP CO 8 Good 2 0.2 PPM
3:00 AM I25DEN CO 8 Good 2 0.2 PPM
3:00 AM WBY PM10 24 Good 2 2 µg/m3
2:00 AM CAMP CO 8 Good 2 0.2 PPM
2:00 AM I25DEN CO 8 Good 2 0.2 PPM
2:00 AM WBY PM10 24 Good 2 2 µg/m3
1:00 AM CAMP CO 8 Good 2 0.2 PPM
4:00 AM CCOL PM10 24 Good 3 3 µg/m3
4:00 AM GJCT CO 8 Good 3 0.3 PPM
3:00 AM CCOL PM10 24 Good 3 3 µg/m3
3:00 AM GJCT CO 8 Good 3 0.3 PPM
2:00 AM CCOL PM10 24 Good 3 3 µg/m3
2:00 AM GJCT CO 8 Good 3 0.3 PPM
1:00 AM CCOL PM10 24 Good 3 3 µg/m3
1:00 AM GJCT CO 8 Good 3 0.3 PPM
1:00 AM WBY PM10 24 Good 3 3 µg/m3
2:00 AM I25DEN PM10 24 Good 4 4 µg/m3
1:00 AM CASA PM10 24 Good 4 4 µg/m3
1:00 AM FTCF PM10 24 Good 4 4 µg/m3
1:00 AM I25DEN PM10 24 Good 4 4 µg/m3
4:00 AM CASA PM10 24 Good 5 5 µg/m3
4:00 AM FTCF PM10 24 Good 5 5 µg/m3
4:00 AM I25DEN PM10 24 Good 5 5 µg/m3
3:00 AM CASA PM10 24 Good 5 5 µg/m3
3:00 AM FTCF PM10 24 Good 5 5 µg/m3
3:00 AM I25DEN PM10 24 Good 5 5 µg/m3
2:00 AM ADM PM10 24 Good 5 5 µg/m3
2:00 AM CASA PM10 24 Good 5 5 µg/m3
2:00 AM FTCF PM10 24 Good 5 5 µg/m3
1:00 AM ADM PM10 24 Good 5 5 µg/m3
4:00 AM ADM PM10 24 Good 6 6 µg/m3
4:00 AM GJPB PM10 24 Good 6 7 µg/m3
4:00 AM GREH PM10 24 Good 6 6 µg/m3
4:00 AM I25GLO PM10 24 Good 6 7 µg/m3
3:00 AM ADM PM10 24 Good 6 6 µg/m3
3:00 AM GJPB PM10 24 Good 6 7 µg/m3
3:00 AM GREH PM10 24 Good 6 6 µg/m3
3:00 AM I25GLO PM10 24 Good 6 7 µg/m3
2:00 AM GJPB PM10 24 Good 6 7 µg/m3
2:00 AM GREH PM10 24 Good 6 6 µg/m3
2:00 AM I25GLO PM10 24 Good 6 6 µg/m3
1:00 AM GREH PM10 24 Good 6 6 µg/m3
1:00 AM I25GLO PM10 24 Good 6 6 µg/m3
2:00 AM CAMP PM10 24 Good 7 8 µg/m3
1:00 AM CAMP PM10 24 Good 7 8 µg/m3
1:00 AM GJPB PM10 24 Good 7 8 µg/m3
4:00 AM CAMP PM10 24 Good 8 9 µg/m3
3:00 AM CAMP PM10 24 Good 8 9 µg/m3
2:00 AM CASA PM2.5 24 Good 8 2 µg/m3
1:00 AM CASA PM2.5 24 Good 8 2 µg/m3
4:00 AM CASA PM2.5 24 Good 9 2 µg/m3
3:00 AM CASA PM2.5 24 Good 9 2 µg/m3
3:00 AM CHAT PM10 24 Good 9 10 µg/m3
2:00 AM CHAT PM10 24 Good 9 10 µg/m3
1:00 AM CHAT PM10 24 Good 9 10 µg/m3
1:00 AM I25DEN PM2.5 24 Good 9 2 µg/m3
4:00 AM ADM PM2.5 24 Good 10 3 µg/m3
4:00 AM CHAT PM10 24 Good 10 11 µg/m3
3:00 AM ADM PM2.5 24 Good 10 2 µg/m3
2:00 AM ADM PM2.5 24 Good 10 2 µg/m3
2:00 AM GREH PM2.5 24 Good 10 3 µg/m3
2:00 AM I25DEN PM2.5 24 Good 10 2 µg/m3
2:00 AM SWAN PM2.5 24 Good 10 3 µg/m3
1:00 AM ADM PM2.5 24 Good 10 2 µg/m3
1:00 AM GREH PM2.5 24 Good 10 2 µg/m3
1:00 AM SWAN PM2.5 24 Good 10 2 µg/m3
4:00 AM CASA O3 8 Good 11 12 PPB
4:00 AM LNGM PM2.5 24 Good 11 3 µg/m3
3:00 AM GREH PM2.5 24 Good 11 3 µg/m3
3:00 AM I25DEN PM2.5 24 Good 11 3 µg/m3
3:00 AM LNGM PM2.5 24 Good 11 3 µg/m3
3:00 AM SWAN PM2.5 24 Good 11 3 µg/m3
4:00 AM CCOL PM2.5 24 Good 12 3 µg/m3
4:00 AM GREH PM2.5 24 Good 12 3 µg/m3
4:00 AM I25DEN PM2.5 24 Good 12 3 µg/m3
4:00 AM SWAN PM2.5 24 Good 12 3 µg/m3
3:00 AM CCOL PM2.5 24 Good 12 3 µg/m3
3:00 AM NJH PM2.5 24 Good 12 3 µg/m3
2:00 AM CAMP PM2.5 24 Good 12 3 µg/m3
2:00 AM I25GLO PM2.5 24 Good 12 3 µg/m3
2:00 AM LNGM PM2.5 24 Good 12 3 µg/m3
2:00 AM NJH PM2.5 24 Good 12 3 µg/m3
1:00 AM CAMP PM2.5 24 Good 12 3 µg/m3
1:00 AM CCOL PM2.5 24 Good 12 3 µg/m3
1:00 AM I25GLO PM2.5 24 Good 12 3 µg/m3
1:00 AM LNGM PM2.5 24 Good 12 3 µg/m3
1:00 AM NJH PM2.5 24 Good 12 3 µg/m3
3:00 AM CAMP PM2.5 24 Good 13 3 µg/m3
3:00 AM I25GLO PM2.5 24 Good 13 3 µg/m3
2:00 AM CCOL PM2.5 24 Good 13 3 µg/m3
4:00 AM CAMP O3 8 Good 14 15 PPB
4:00 AM CAMP PM2.5 24 Good 14 3 µg/m3
4:00 AM I25GLO PM2.5 24 Good 14 3 µg/m3
4:00 AM NJH PM2.5 24 Good 14 3 µg/m3
3:00 AM CASA O3 8 Good 14 15 PPB
3:00 AM FTCF PM2.5 24 Good 14 3 µg/m3
2:00 AM FTCF PM2.5 24 Good 14 3 µg/m3
1:00 AM FTCF PM2.5 24 Good 14 3 µg/m3
4:00 AM FTCF PM2.5 24 Good 15 4 µg/m3
4:00 AM RIFL PM2.5 24 Good 15 4 µg/m3
4:00 AM WBY O3 8 Good 16 17 PPB
3:00 AM RIFL PM2.5 24 Good 16 4 µg/m3
1:00 AM RIFL PM2.5 24 Good 16 4 µg/m3
2:00 AM CASA O3 8 Good 17 18 PPB
2:00 AM RIFL PM2.5 24 Good 17 4 µg/m3
4:00 AM FTC O3 8 Good 18 19 PPB
3:00 AM CAMP O3 8 Good 18 19 PPB
4:00 AM HLD O3 8 Good 19 21 PPB
4:00 AM WCH O3 8 Good 19 21 PPB
3:00 AM FTC O3 8 Good 19 20 PPB
3:00 AM WBY O3 8 Good 19 21 PPB
1:00 AM CHAT PM2.5 24 Good 19 5 µg/m3
3:00 AM CHAT PM2.5 24 Good 20 5 µg/m3
2:00 AM CAMP O3 8 Good 20 22 PPB
2:00 AM CHAT PM2.5 24 Good 20 5 µg/m3
2:00 AM FTC O3 8 Good 20 22 PPB
1:00 AM CASA O3 8 Good 20 22 PPB
1:00 AM FTC O3 8 Good 20 22 PPB
4:00 AM CHAT O3 8 Good 21 23 PPB
4:00 AM CHAT PM2.5 24 Good 21 5 µg/m3
3:00 AM HLD O3 8 Good 21 23 PPB
3:00 AM WCH O3 8 Good 21 23 PPB
4:00 AM CTZ O3 8 Good 22 24 PPB
4:00 AM GJPB PM2.5 24 Good 22 5 µg/m3
4:00 AM GRET O3 8 Good 22 24 PPB
3:00 AM GJPB PM2.5 24 Good 22 5 µg/m3
2:00 AM GJPB PM2.5 24 Good 22 5 µg/m3
2:00 AM WBY O3 8 Good 22 24 PPB
3:00 AM CHAT O3 8 Good 23 25 PPB
3:00 AM CTZ O3 8 Good 23 25 PPB
3:00 AM GRET O3 8 Good 23 25 PPB
2:00 AM ASP O3 8 Good 23 25 PPB
2:00 AM CTZ O3 8 Good 23 25 PPB
1:00 AM ASP O3 8 Good 23 25 PPB
1:00 AM CAMP NO2 1 Good 23 24 PPB
1:00 AM CAMP NO2 1 Good 23 24 PPB
1:00 AM CAMP O3 8 Good 23 25 PPB
1:00 AM CTZ O3 8 Good 23 25 PPB
1:00 AM GJPB PM2.5 24 Good 23 6 µg/m3
3:00 AM ASP O3 8 Good 24 26 PPB
2:00 AM ASPN O3 8 Good 24 26 PPB
2:00 AM GRET O3 8 Good 24 26 PPB
2:00 AM HLD O3 8 Good 24 26 PPB
2:00 AM WCH O3 8 Good 24 26 PPB
1:00 AM ASPN O3 8 Good 24 26 PPB
1:00 AM GRET O3 8 Good 24 26 PPB
4:00 AM ACAD O3 8 Good 25 27 PPB
4:00 AM ASP O3 8 Good 25 27 PPB
4:00 AM BOUR O3 8 Good 25 27 PPB
4:00 AM MAN O3 8 Good 25 27 PPB
3:00 AM ACAD O3 8 Good 25 27 PPB
2:00 AM CHAT O3 8 Good 25 27 PPB
1:00 AM WBY O3 8 Good 25 27 PPB
4:00 AM PDX O3 8 Good 26 28 PPB
3:00 AM BOUR O3 8 Good 26 28 PPB
3:00 AM MAN O3 8 Good 26 28 PPB
3:00 AM WBY NO2 1 Good 26 28 PPB
3:00 AM WBY NO2 1 Good 26 28 PPB
2:00 AM NREL O3 8 Good 26 28 PPB
1:00 AM WBY NO2 1 Good 26 28 PPB
1:00 AM WBY NO2 1 Good 26 28 PPB
4:00 AM ASPN O3 8 Good 27 29 PPB
4:00 AM NREL O3 8 Good 27 29 PPB
3:00 AM ASPN O3 8 Good 27 29 PPB
3:00 AM NREL O3 8 Good 27 29 PPB
3:00 AM PDX O3 8 Good 27 29 PPB
2:00 AM ACAD O3 8 Good 27 29 PPB
2:00 AM BOUR O3 8 Good 27 29 PPB
2:00 AM MAN O3 8 Good 27 29 PPB
1:00 AM CHAT O3 8 Good 27 29 PPB
1:00 AM HLD O3 8 Good 27 29 PPB
1:00 AM NREL O3 8 Good 27 29 PPB
1:00 AM WCH O3 8 Good 27 29 PPB
2:00 AM PDX O3 8 Good 28 30 PPB
1:00 AM ACAD O3 8 Good 28 30 PPB
1:00 AM PDX O3 8 Good 28 30 PPB
4:00 AM FTCW O3 8 Good 29 31 PPB
2:00 AM WBY NO2 1 Good 29 31 PPB
2:00 AM WBY NO2 1 Good 29 31 PPB
1:00 AM BOUR O3 8 Good 29 31 PPB
1:00 AM MAN O3 8 Good 29 31 PPB
4:00 AM RFN O3 8 Good 30 32 PPB
3:00 AM FTCW O3 8 Good 30 32 PPB
2:00 AM RFN O3 8 Good 30 32 PPB
1:00 AM RFN O3 8 Good 30 32 PPB
4:00 AM AURE O3 8 Good 31 34 PPB
4:00 AM PAL O3 8 Good 31 33 PPB
3:00 AM PAL O3 8 Good 31 34 PPB
3:00 AM RFN O3 8 Good 31 33 PPB
2:00 AM FTCW O3 8 Good 31 33 PPB
2:00 AM PAL O3 8 Good 31 34 PPB
1:00 AM FTCW O3 8 Good 31 34 PPB
3:00 AM AURE O3 8 Good 32 35 PPB
2:00 AM AURE O3 8 Good 32 35 PPB
2:00 AM CAMP NO2 1 Good 32 34 PPB
2:00 AM CAMP NO2 1 Good 32 34 PPB
1:00 AM AURE O3 8 Good 32 35 PPB
1:00 AM PAL O3 8 Good 32 35 PPB
4:00 AM ELK O3 8 Good 33 36 PPB
3:00 AM ELK O3 8 Good 33 36 PPB
2:00 AM ELK O3 8 Good 34 37 PPB
4:00 AM WBY NO2 1 Good 35 37 PPB
4:00 AM WBY NO2 1 Good 35 37 PPB
1:00 AM ELK O3 8 Good 35 38 PPB
4:00 AM CASA NO2 1 Good 37 39 PPB
3:00 AM CASA NO2 1 Good 37 39 PPB
2:00 AM I25GLO NO2 1 Good 37 39 PPB
1:00 AM I25GLO NO2 1 Good 37 39 PPB
3:00 AM I25DEN NO2 1 Good 38 40 PPB
4:00 AM I25DEN NO2 1 Good 39 41 PPB
2:00 AM CASA NO2 1 Good 40 42 PPB
1:00 AM I25DEN NO2 1 Good 40 42 PPB
1:00 AM SWAN NO2 1 Good 40 42 PPB
2:00 AM I25DEN NO2 1 Good 41 43 PPB
2:00 AM SWAN NO2 1 Good 41 43 PPB
1:00 AM CASA NO2 1 Good 41 43 PPB
4:00 AM CAMP NO2 1 Good 42 44 PPB
4:00 AM CAMP NO2 1 Good 42 44 PPB
4:00 AM I25GLO NO2 1 Good 42 44 PPB
4:00 AM SWAN NO2 1 Good 42 44 PPB
3:00 AM CAMP NO2 1 Good 42 44 PPB
3:00 AM CAMP NO2 1 Good 42 44 PPB
3:00 AM SWAN NO2 1 Good 42 44 PPB
1:00 AM DELT PM2.5 24 Good 43 10 µg/m3
4:00 AM DELT PM2.5 24 Good 44 11 µg/m3
2:00 AM DELT PM2.5 24 Good 44 11 µg/m3
3:00 AM DELT PM2.5 24 Good 45 11 µg/m3
3:00 AM I25GLO NO2 1 Good 45 48 PPB

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