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

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