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AQI Calculations on 01/18/2018 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 WCH O3 8 Good 25 27 PPB
1:00 AM WCH O3 8 Good 21 23 PPB
2:00 AM WBY CO 8 Good 8 0.7 PPM
2:00 AM WBY NO2 1 Good 35 37 PPB
2:00 AM WBY NO2 1 Good 35 37 PPB
2:00 AM WBY O3 8 Good 0 0 PPB
2:00 AM WBY PM10 24 Good 27 29 µg/m3
2:00 AM WBY SO2 1 Good 1 1 PPB
2:00 AM WBY SO2 1 Good 1 1 PPB
1:00 AM WBY CO 8 Good 8 0.7 PPM
1:00 AM WBY NO2 1 Good 35 37 PPB
1:00 AM WBY NO2 1 Good 35 37 PPB
1:00 AM WBY O3 8 Good 0 0 PPB
1:00 AM WBY PM10 24 Good 27 29 µg/m3
1:00 AM WBY SO2 1 Good 1 1 PPB
1:00 AM WBY SO2 1 Good 1 1 PPB
2:00 AM SWAN NO2 1 Good 34 36 PPB
2:00 AM SWAN PM2.5 24 Good 50 12 µg/m3
1:00 AM SWAN NO2 1 Good 37 39 PPB
1:00 AM SWAN PM2.5 24 Moderate 51 12 µg/m3
2:00 AM RIFL PM2.5 24 Good 21 5 µg/m3
1:00 AM RIFL PM2.5 24 Good 21 5 µg/m3
2:00 AM RFN O3 8 Good 31 34 PPB
1:00 AM RFN O3 8 Good 32 35 PPB
2:00 AM PDX O3 8 Good 19 21 PPB
1:00 AM PDX O3 8 Good 19 21 PPB
2:00 AM PAL O3 8 Good 21 23 PPB
1:00 AM PAL O3 8 Good 23 25 PPB
2:00 AM NREL O3 8 Good 31 34 PPB
1:00 AM NREL O3 8 Good 30 32 PPB
2:00 AM NJH PM2.5 24 Good 37 9 µg/m3
1:00 AM NJH PM2.5 24 Good 39 9 µg/m3
2:00 AM MAN O3 8 Good 31 34 PPB
1:00 AM MAN O3 8 Good 31 34 PPB
2:00 AM LNGM PM2.5 24 Good 50 12 µg/m3
1:00 AM LNGM PM2.5 24 Good 50 12 µg/m3
2:00 AM I25GLO NO2 1 Good 31 33 PPB
2:00 AM I25GLO PM10 24 Good 50 54 µg/m3
2:00 AM I25GLO PM2.5 24 Moderate 59 16 µg/m3
1:00 AM I25GLO NO2 1 Good 35 37 PPB
1:00 AM I25GLO PM10 24 Good 50 54 µg/m3
1:00 AM I25GLO PM2.5 24 Moderate 60 17 µg/m3
2:00 AM I25DEN CO 8 Good 8 0.7 PPM
2:00 AM I25DEN NO2 1 Good 34 36 PPB
2:00 AM I25DEN PM10 24 Good 32 35 µg/m3
2:00 AM I25DEN PM2.5 24 Good 47 11 µg/m3
1:00 AM I25DEN CO 8 Good 8 0.7 PPM
1:00 AM I25DEN NO2 1 Good 34 36 PPB
1:00 AM I25DEN PM10 24 Good 33 36 µg/m3
1:00 AM I25DEN PM2.5 24 Good 50 12 µg/m3
2:00 AM HLD O3 8 Good 29 31 PPB
1:00 AM HLD O3 8 Good 26 28 PPB
2:00 AM H24 CO 8 Good 11 1.0 PPM
2:00 AM H24 SO2 1 Good 1 1 PPB
1:00 AM H24 CO 8 Good 12 1.1 PPM
2:00 AM GRET CO 8 Good 3 0.3 PPM
2:00 AM GRET O3 8 Good 6 7 PPB
1:00 AM GRET CO 8 Good 3 0.3 PPM
1:00 AM GRET O3 8 Good 6 7 PPB
2:00 AM GREH PM10 24 Good 37 40 µg/m3
2:00 AM GREH PM2.5 24 Moderate 65 19 µg/m3
1:00 AM GREH PM10 24 Good 36 39 µg/m3
1:00 AM GREH PM2.5 24 Moderate 64 19 µg/m3
2:00 AM GJPB PM10 24 Good 12 13 µg/m3
2:00 AM GJPB PM2.5 24 Good 30 7 µg/m3
1:00 AM GJPB PM10 24 Good 12 13 µg/m3
1:00 AM GJPB PM2.5 24 Good 29 7 µg/m3
2:00 AM GJCT CO 8 Good 6 0.5 PPM
1:00 AM GJCT CO 8 Good 6 0.5 PPM
2:00 AM FTCW O3 8 Good 27 29 PPB
1:00 AM FTCW O3 8 Good 27 29 PPB
2:00 AM FTCF PM10 24 Good 17 18 µg/m3
2:00 AM FTCF PM2.5 24 Good 36 9 µg/m3
1:00 AM FTCF PM10 24 Good 18 19 µg/m3
1:00 AM FTCF PM2.5 24 Good 38 9 µg/m3
2:00 AM FTC CO 8 Good 9 0.8 PPM
2:00 AM FTC O3 8 Good 2 2 PPB
1:00 AM FTC CO 8 Good 10 0.9 PPM
1:00 AM FTC O3 8 Good 2 2 PPB
2:00 AM ELK O3 8 Good 30 32 PPB
1:00 AM ELK O3 8 Good 30 32 PPB
2:00 AM DELT PM2.5 24 Good 50 12 µg/m3
1:00 AM DELT PM2.5 24 Good 50 12 µg/m3
2:00 AM CTZ O3 8 Good 10 11 PPB
1:00 AM CTZ O3 8 Good 11 12 PPB
2:00 AM CHAT O3 8 Good 21 23 PPB
2:00 AM CHAT PM10 24 Moderate 76 105 µg/m3
2:00 AM CHAT PM2.5 24 Good 43 10 µg/m3
1:00 AM CHAT O3 8 Good 23 25 PPB
1:00 AM CHAT PM10 24 Moderate 74 102 µg/m3
1:00 AM CHAT PM2.5 24 Good 43 10 µg/m3
2:00 AM CCOL PM10 24 Good 13 14 µg/m3
2:00 AM CCOL PM2.5 24 Good 16 4 µg/m3
1:00 AM CCOL PM10 24 Good 13 14 µg/m3
1:00 AM CCOL PM2.5 24 Good 17 4 µg/m3
2:00 AM CASA CO 8 Good 7 0.6 PPM
2:00 AM CASA NO2 1 Good 33 35 PPB
2:00 AM CASA O3 8 Good 0 0 PPB
2:00 AM CASA PM10 24 Good 31 33 µg/m3
2:00 AM CASA PM2.5 24 Good 45 11 µg/m3
2:00 AM CASA SO2 1 Good 1 1 PPB
1:00 AM CASA CO 8 Good 7 0.6 PPM
1:00 AM CASA NO2 1 Good 33 35 PPB
1:00 AM CASA O3 8 Good 0 0 PPB
1:00 AM CASA PM10 24 Good 31 33 µg/m3
1:00 AM CASA PM2.5 24 Good 47 11 µg/m3
2:00 AM CAMP CO 8 Good 6 0.5 PPM
2:00 AM CAMP NO2 1 Good 12 13 PPB
2:00 AM CAMP NO2 1 Good 12 13 PPB
2:00 AM CAMP O3 8 Good 12 13 PPB
2:00 AM CAMP PM10 24 Good 38 41 µg/m3
2:00 AM CAMP PM2.5 24 Moderate 55 14 µg/m3
1:00 AM CAMP CO 8 Good 7 0.6 PPM
1:00 AM CAMP NO2 1 Good 16 17 PPB
1:00 AM CAMP NO2 1 Good 16 17 PPB
1:00 AM CAMP O3 8 Good 9 10 PPB
1:00 AM CAMP PM10 24 Good 40 43 µg/m3
1:00 AM CAMP PM2.5 24 Moderate 56 15 µg/m3
2:00 AM BOUR O3 8 Good 13 14 PPB
1:00 AM BOUR O3 8 Good 14 15 PPB
2:00 AM BOU PM2.5 24 Good 14 3 µg/m3
1:00 AM BOU PM2.5 24 Good 14 3 µg/m3
2:00 AM AURE O3 8 Good 29 31 PPB
1:00 AM AURE O3 8 Good 29 31 PPB
2:00 AM ASPN2 PM10 24 Moderate 54 62 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 48 12 µg/m3
1:00 AM ASPN2 PM10 24 Moderate 54 62 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 48 12 µg/m3
2:00 AM ASPN O3 8 Good 28 30 PPB
1:00 AM ASPN O3 8 Good 28 30 PPB
2:00 AM ASP O3 8 Good 31 34 PPB
1:00 AM ASP O3 8 Good 29 31 PPB
2:00 AM ADM PM10 24 Good 47 51 µg/m3
2:00 AM ADM PM2.5 24 Moderate 62 17 µg/m3
1:00 AM ADM PM10 24 Good 47 51 µg/m3
1:00 AM ADM PM2.5 24 Moderate 62 17 µg/m3
2:00 AM ACAD O3 8 Good 8 9 PPB
1:00 AM ACAD O3 8 Good 10 11 PPB

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