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AQI Calculations on 11/19/2017 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.
1:00 AM RFN O3 8 Good 42 45 PPB
2:00 AM RFN O3 8 Good 41 44 PPB
1:00 AM NREL O3 8 Good 36 39 PPB
2:00 AM NREL O3 8 Good 35 38 PPB
2:00 AM ASP O3 8 Good 33 36 PPB
1:00 AM ASP O3 8 Good 32 35 PPB
2:00 AM AURE O3 8 Good 29 31 PPB
2:00 AM HLD O3 8 Good 29 31 PPB
1:00 AM AURE O3 8 Good 29 31 PPB
2:00 AM ELK O3 8 Good 28 30 PPB
1:00 AM ELK O3 8 Good 28 30 PPB
1:00 AM HLD O3 8 Good 27 29 PPB
1:00 AM FTCW O3 8 Good 25 27 PPB
1:00 AM MAN O3 8 Good 25 27 PPB
1:00 AM PAL O3 8 Good 25 27 PPB
2:00 AM FTCW O3 8 Good 24 26 PPB
2:00 AM MAN O3 8 Good 24 26 PPB
2:00 AM PAL O3 8 Good 24 26 PPB
2:00 AM WCH O3 8 Good 24 26 PPB
1:00 AM PDX O3 8 Good 24 26 PPB
2:00 AM PDX O3 8 Good 23 25 PPB
1:00 AM WCH O3 8 Good 23 25 PPB
1:00 AM CHAT O3 8 Good 22 24 PPB
2:00 AM CHAT O3 8 Good 21 23 PPB
1:00 AM BOUR O3 8 Good 18 19 PPB
1:00 AM CTZ O3 8 Good 18 19 PPB
2:00 AM BOUR O3 8 Good 17 18 PPB
1:00 AM GRET O3 8 Good 17 18 PPB
2:00 AM CTZ O3 8 Good 16 17 PPB
1:00 AM CAMP O3 8 Good 15 16 PPB
2:00 AM GRET O3 8 Good 13 14 PPB
1:00 AM ACAD O3 8 Good 13 14 PPB
2:00 AM ACAD O3 8 Good 12 13 PPB
2:00 AM CAMP O3 8 Good 12 13 PPB
1:00 AM WBY O3 8 Good 11 12 PPB
1:00 AM CASA O3 8 Good 9 10 PPB
1:00 AM RIFLO3 O3 8 Good 9 10 PPB
2:00 AM RIFLO3 O3 8 Good 8 9 PPB
2:00 AM FTC O3 8 Good 6 7 PPB
2:00 AM WBY O3 8 Good 6 7 PPB
1:00 AM FTC O3 8 Good 6 7 PPB
2:00 AM CASA O3 8 Good 5 5 PPB
2:00 AM ASPN O3 8 Good 36 39 PPB
1:00 AM ASPN O3 8 Good 35 38 PPB
2:00 AM ADM PM10 24 Good 13 14 µg/m3
2:00 AM I25GLO PM10 24 Good 12 13 µg/m3
1:00 AM ADM PM10 24 Good 12 13 µg/m3
1:00 AM I25GLO PM10 24 Good 12 13 µg/m3
2:00 AM GREH PM10 24 Good 11 12 µg/m3
1:00 AM GREH PM10 24 Good 11 12 µg/m3
2:00 AM FTCF PM10 24 Good 9 10 µg/m3
1:00 AM FTCF PM10 24 Good 9 10 µg/m3
2:00 AM I25DEN PM10 24 Good 7 8 µg/m3
2:00 AM SWAN PM10 24 Good 7 8 µg/m3
2:00 AM WBY PM10 24 Good 7 8 µg/m3
1:00 AM I25DEN PM10 24 Good 7 8 µg/m3
1:00 AM SWAN PM10 24 Good 7 8 µg/m3
1:00 AM GREH PM2.5 24 Good 31 8 µg/m3
2:00 AM GREH PM2.5 24 Good 30 7 µg/m3
2:00 AM LNGM PM2.5 24 Good 30 7 µg/m3
2:00 AM DELT PM2.5 24 Good 29 7 µg/m3
1:00 AM WBY PM10 24 Good 6 7 µg/m3
1:00 AM LNGM PM2.5 24 Good 28 7 µg/m3
1:00 AM DELT PM2.5 24 Good 26 6 µg/m3
2:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
1:00 AM ASPN2 PM10 24 Good 6 6 µg/m3
2:00 AM CHAT PM10 24 Good 5 5 µg/m3
2:00 AM GJPB PM10 24 Good 5 5 µg/m3
1:00 AM CHAT PM10 24 Good 5 5 µg/m3
2:00 AM FTCF PM2.5 24 Good 20 5 µg/m3
2:00 AM I25GLO PM2.5 24 Good 20 5 µg/m3
1:00 AM FTCF PM2.5 24 Good 20 5 µg/m3
2:00 AM ADM PM2.5 24 Good 19 5 µg/m3
1:00 AM I25GLO PM2.5 24 Good 19 5 µg/m3
2:00 AM RIFL PM2.5 24 Good 19 5 µg/m3
2:00 AM SWAN PM2.5 24 Good 19 5 µg/m3
1:00 AM SWAN PM2.5 24 Good 18 4 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 18 4 µg/m3
1:00 AM ADM PM2.5 24 Good 18 4 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 17 4 µg/m3
2:00 AM CAMP PM10 24 Good 4 4 µg/m3
2:00 AM CASA PM10 24 Good 4 4 µg/m3
1:00 AM CAMP PM10 24 Good 4 4 µg/m3
1:00 AM CASA PM10 24 Good 4 4 µg/m3
1:00 AM GJPB PM10 24 Good 4 4 µg/m3
1:00 AM RIFL PM2.5 24 Good 17 4 µg/m3
2:00 AM GJPB PM2.5 24 Good 16 4 µg/m3
1:00 AM GJPB PM2.5 24 Good 15 4 µg/m3
2:00 AM I25DEN PM2.5 24 Good 15 4 µg/m3
1:00 AM I25DEN PM2.5 24 Good 14 3 µg/m3
2:00 AM CASA PM2.5 24 Good 12 3 µg/m3
2:00 AM CAMP PM2.5 24 Good 11 3 µg/m3
1:00 AM CAMP PM2.5 24 Good 11 3 µg/m3
1:00 AM CASA PM2.5 24 Good 11 3 µg/m3
2:00 AM CHAT PM2.5 24 Good 10 2 µg/m3
1:00 AM CHAT PM2.5 24 Good 10 2 µg/m3
2:00 AM I25DEN CO 8 Good 7 0.6 PPM
2:00 AM H24 CO 8 Good 6 0.5 PPM
1:00 AM FTC CO 8 Good 6 0.5 PPM
1:00 AM H24 CO 8 Good 6 0.5 PPM
1:00 AM I25DEN CO 8 Good 6 0.5 PPM
2:00 AM CASA CO 8 Good 5 0.4 PPM
2:00 AM FTC CO 8 Good 5 0.4 PPM
2:00 AM WBY CO 8 Good 5 0.4 PPM
1:00 AM WBY CO 8 Good 5 0.4 PPM
2:00 AM CAMP CO 8 Good 3 0.3 PPM
2:00 AM GJCT CO 8 Good 3 0.3 PPM
1:00 AM CAMP CO 8 Good 3 0.3 PPM
1:00 AM CASA CO 8 Good 3 0.3 PPM
1:00 AM GJCT CO 8 Good 3 0.3 PPM
2:00 AM GRET CO 8 Good 2 0.2 PPM
1:00 AM GRET CO 8 Good 2 0.2 PPM
2:00 AM I25GLO NO2 1 Good 35 37 PPB
2:00 AM SWAN NO2 1 Good 33 35 PPB
2:00 AM CASA NO2 1 Good 32 34 PPB
1:00 AM CASA NO2 1 Good 32 34 PPB
1:00 AM I25GLO NO2 1 Good 32 34 PPB
1:00 AM SWAN NO2 1 Good 32 34 PPB
1:00 AM WBY NO2 1 Good 31 33 PPB
1:00 AM WBY NO2 1 Good 31 33 PPB
2:00 AM WBY NO2 1 Good 29 31 PPB
2:00 AM WBY NO2 1 Good 29 31 PPB
2:00 AM CAMP NO2 1 Good 24 25 PPB
2:00 AM CAMP NO2 1 Good 24 25 PPB
1:00 AM CAMP NO2 1 Good 17 18 PPB
1:00 AM CAMP NO2 1 Good 17 18 PPB
2:00 AM CASA SO2 1 Good 1 1 PPB

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