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AQI Calculations on 01/17/2018 1:00AM - 5:00AM

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.


Due to limited system resources and high volume, today's AQI calculations can no longer be sorted by columns. For a CSV file of these data, updated hourly, click here.


All data are collected real-time and have not been corrected nor validated.

Time *
(MST)
Monitoring Location Pollutant Interval
(Hr)
Air Quality AQI Avg.
5:00 AM ACAD O3 8 Good 9 10 PPB
5:00 AM ADM PM10 24 Good 30 32 µg/m3
5:00 AM ADM PM2.5 24 Moderate 54 13 µg/m3
5:00 AM ASP O3 8 Good 37 40 PPB
5:00 AM ASPN O3 8 Good 36 39 PPB
5:00 AM ASPN2 PM10 24 Moderate 58 69 µg/m3
5:00 AM ASPN2 PM2.5 24 Moderate 53 13 µg/m3
5:00 AM BOU PM2.5 24 Good 23 6 µg/m3
5:00 AM BOUR O3 8 Good 8 9 PPB
5:00 AM CAMP CO 8 Good 12 1.1 PPM
5:00 AM CAMP NO2 1 Moderate 55 58 PPB
5:00 AM CAMP NO2 1 Moderate 55 58 PPB
5:00 AM CAMP O3 8 Good 0 0 PPB
5:00 AM CAMP PM10 24 Good 35 38 µg/m3
5:00 AM CAMP PM2.5 24 Moderate 54 14 µg/m3
5:00 AM CAMP SO2 1 Good 7 5 PPB
5:00 AM CAMP SO2 1 Good 7 5 PPB
5:00 AM CASA CO 8 Good 15 1.3 PPM
5:00 AM CASA NO2 1 Good 40 42 PPB
5:00 AM CASA O3 8 Good 0 0 PPB
5:00 AM CASA PM10 24 Good 28 30 µg/m3
5:00 AM CASA PM2.5 24 Moderate 51 12 µg/m3
5:00 AM CASA SO2 1 Good 4 3 PPB
5:00 AM CCOL PM10 24 Good 13 14 µg/m3
5:00 AM CCOL PM2.5 24 Good 31 8 µg/m3
5:00 AM CHAT O3 8 Good 11 12 PPB
5:00 AM CHAT PM10 24 Unhealthy for Sensitive Groups 108 170 µg/m3
5:00 AM CHAT PM2.5 24 Moderate 62 18 µg/m3
5:00 AM DELT PM2.5 24 Good 47 11 µg/m3
5:00 AM ELK O3 8 Good 30 32 PPB
5:00 AM FTC CO 8 Good 6 0.5 PPM
5:00 AM FTC O3 8 Good 1 1 PPB
5:00 AM FTCF PM10 24 Good 14 15 µg/m3
5:00 AM FTCF PM2.5 24 Good 42 10 µg/m3
5:00 AM FTCW O3 8 Good 14 15 PPB
5:00 AM GJPB PM10 24 Good 7 8 µg/m3
5:00 AM GJPB PM2.5 24 Good 21 5 µg/m3
5:00 AM GREH PM10 24 Good 25 27 µg/m3
5:00 AM GREH PM2.5 24 Moderate 57 15 µg/m3
5:00 AM GRET CO 8 Good 5 0.4 PPM
5:00 AM GRET O3 8 Good 1 1 PPB
5:00 AM H24 CO 8 Good 5 0.4 PPM
5:00 AM H24 SO2 1 Good 1 1 PPB
5:00 AM I25DEN CO 8 Good 17 1.5 PPM
5:00 AM I25DEN NO2 1 Good 39 41 PPB
5:00 AM I25DEN PM10 24 Good 29 31 µg/m3
5:00 AM I25DEN PM2.5 24 Moderate 51 12 µg/m3
5:00 AM I25GLO NO2 1 Moderate 55 58 PPB
5:00 AM I25GLO PM10 24 Good 41 44 µg/m3
5:00 AM I25GLO PM2.5 24 Moderate 56 15 µg/m3
5:00 AM LNGM PM2.5 24 Good 47 11 µg/m3
5:00 AM MAN O3 8 Good 26 28 PPB
5:00 AM NJH PM2.5 24 Good 37 9 µg/m3
5:00 AM NREL O3 8 Good 24 26 PPB
5:00 AM PDX O3 8 Good 19 21 PPB
5:00 AM RFN O3 8 Good 23 25 PPB
5:00 AM RIFL PM2.5 24 Good 21 5 µg/m3
5:00 AM SWAN NO2 1 Good 44 47 PPB
5:00 AM SWAN PM2.5 24 Good 48 12 µg/m3
5:00 AM WBY CO 8 Good 12 1.1 PPM
5:00 AM WBY NO2 1 Good 40 42 PPB
5:00 AM WBY NO2 1 Good 40 42 PPB
5:00 AM WBY O3 8 Good 0 0 PPB
5:00 AM WBY PM10 24 Good 17 18 µg/m3
5:00 AM WBY SO2 1 Good 3 2 PPB
5:00 AM WBY SO2 1 Good 3 2 PPB
5:00 AM WCH O3 8 Good 27 29 PPB
4:00 AM ACAD O3 8 Good 6 7 PPB
4:00 AM ADM PM10 24 Good 29 31 µg/m3
4:00 AM ADM PM2.5 24 Moderate 52 13 µg/m3
4:00 AM ASP O3 8 Good 38 41 PPB
4:00 AM ASPN O3 8 Good 36 39 PPB
4:00 AM ASPN2 PM10 24 Moderate 59 71 µg/m3
4:00 AM ASPN2 PM2.5 24 Moderate 54 14 µg/m3
4:00 AM BOU PM2.5 24 Good 23 6 µg/m3
4:00 AM BOUR O3 8 Good 8 9 PPB
4:00 AM CAMP CO 8 Good 11 1.0 PPM
4:00 AM CAMP NO2 1 Moderate 51 54 PPB
4:00 AM CAMP NO2 1 Moderate 51 54 PPB
4:00 AM CAMP O3 8 Good 0 0 PPB
4:00 AM CAMP PM10 24 Good 34 37 µg/m3
4:00 AM CAMP PM2.5 24 Moderate 53 13 µg/m3
4:00 AM CAMP SO2 1 Good 6 4 PPB
4:00 AM CAMP SO2 1 Good 6 4 PPB
4:00 AM CASA CO 8 Good 15 1.3 PPM
4:00 AM CASA NO2 1 Good 41 43 PPB
4:00 AM CASA O3 8 Good 1 1 PPB
4:00 AM CASA PM10 24 Good 28 30 µg/m3
4:00 AM CASA PM2.5 24 Good 50 12 µg/m3
4:00 AM CASA SO2 1 Good 4 3 PPB
4:00 AM CCOL PM10 24 Good 13 14 µg/m3
4:00 AM CCOL PM2.5 24 Good 31 8 µg/m3
4:00 AM CHAT O3 8 Good 13 14 PPB
4:00 AM CHAT PM10 24 Unhealthy for Sensitive Groups 103 160 µg/m3
4:00 AM CHAT PM2.5 24 Moderate 61 17 µg/m3
4:00 AM DELT PM2.5 24 Good 47 11 µg/m3
4:00 AM ELK O3 8 Good 31 33 PPB
4:00 AM FTC CO 8 Good 6 0.5 PPM
4:00 AM FTC O3 8 Good 1 1 PPB
4:00 AM FTCF PM10 24 Good 14 15 µg/m3
4:00 AM FTCF PM2.5 24 Good 40 10 µg/m3
4:00 AM FTCW O3 8 Good 12 13 PPB
4:00 AM GJPB PM10 24 Good 7 8 µg/m3
4:00 AM GJPB PM2.5 24 Good 20 5 µg/m3
4:00 AM GREH PM10 24 Good 25 27 µg/m3
4:00 AM GREH PM2.5 24 Moderate 57 15 µg/m3
4:00 AM GRET CO 8 Good 5 0.4 PPM
4:00 AM GRET O3 8 Good 1 1 PPB
4:00 AM H24 CO 8 Good 6 0.5 PPM
4:00 AM H24 SO2 1 Good 1 1 PPB
4:00 AM I25DEN CO 8 Good 16 1.4 PPM
4:00 AM I25DEN NO2 1 Good 38 40 PPB
4:00 AM I25DEN PM10 24 Good 28 30 µg/m3
4:00 AM I25DEN PM2.5 24 Good 50 12 µg/m3
4:00 AM I25GLO NO2 1 Moderate 54 57 PPB
4:00 AM I25GLO PM10 24 Good 40 43 µg/m3
4:00 AM I25GLO PM2.5 24 Moderate 55 14 µg/m3
4:00 AM LNGM PM2.5 24 Good 46 11 µg/m3
4:00 AM MAN O3 8 Good 23 25 PPB
4:00 AM NJH PM2.5 24 Good 37 9 µg/m3
4:00 AM NREL O3 8 Good 23 25 PPB
4:00 AM PDX O3 8 Good 20 22 PPB
4:00 AM RFN O3 8 Good 24 26 PPB
4:00 AM RIFL PM2.5 24 Good 21 5 µg/m3
4:00 AM SWAN NO2 1 Good 42 45 PPB
4:00 AM SWAN PM2.5 24 Good 46 11 µg/m3
4:00 AM WBY CO 8 Good 12 1.1 PPM
4:00 AM WBY NO2 1 Good 37 39 PPB
4:00 AM WBY NO2 1 Good 37 39 PPB
4:00 AM WBY O3 8 Good 0 0 PPB
4:00 AM WBY PM10 24 Good 16 17 µg/m3
4:00 AM WBY SO2 1 Good 3 2 PPB
4:00 AM WBY SO2 1 Good 3 2 PPB
4:00 AM WCH O3 8 Good 27 29 PPB
3:00 AM ACAD O3 8 Good 5 5 PPB
3:00 AM ADM PM10 24 Good 28 30 µg/m3
3:00 AM ADM PM2.5 24 Good 50 12 µg/m3
3:00 AM ASP O3 8 Good 38 41 PPB
3:00 AM ASPN O3 8 Good 36 39 PPB
3:00 AM ASPN2 PM10 24 Moderate 60 73 µg/m3
3:00 AM ASPN2 PM2.5 24 Moderate 55 14 µg/m3
3:00 AM BOU PM2.5 24 Good 24 6 µg/m3
3:00 AM BOUR O3 8 Good 8 9 PPB
3:00 AM CAMP CO 8 Good 11 1.0 PPM
3:00 AM CAMP NO2 1 Good 50 53 PPB
3:00 AM CAMP NO2 1 Good 50 53 PPB
3:00 AM CAMP O3 8 Good 0 0 PPB
3:00 AM CAMP PM10 24 Good 33 36 µg/m3
3:00 AM CAMP PM2.5 24 Moderate 52 13 µg/m3
3:00 AM CAMP SO2 1 Good 4 3 PPB
3:00 AM CAMP SO2 1 Good 4 3 PPB
3:00 AM CASA CO 8 Good 15 1.3 PPM
3:00 AM CASA NO2 1 Good 40 42 PPB
3:00 AM CASA O3 8 Good 1 1 PPB
3:00 AM CASA PM10 24 Good 28 30 µg/m3
3:00 AM CASA PM2.5 24 Good 48 12 µg/m3
3:00 AM CASA SO2 1 Good 4 3 PPB
3:00 AM CCOL PM10 24 Good 13 14 µg/m3
3:00 AM CCOL PM2.5 24 Good 31 8 µg/m3
3:00 AM CHAT O3 8 Good 14 15 PPB
3:00 AM CHAT PM10 24 Moderate 100 153 µg/m3
3:00 AM CHAT PM2.5 24 Moderate 60 17 µg/m3
3:00 AM DELT PM2.5 24 Good 47 11 µg/m3
3:00 AM ELK O3 8 Good 31 34 PPB
3:00 AM FTC CO 8 Good 6 0.5 PPM
3:00 AM FTC O3 8 Good 1 1 PPB
3:00 AM FTCF PM10 24 Good 13 14 µg/m3
3:00 AM FTCF PM2.5 24 Good 39 9 µg/m3
3:00 AM FTCW O3 8 Good 11 12 PPB
3:00 AM GJPB PM10 24 Good 7 8 µg/m3
3:00 AM GJPB PM2.5 24 Good 20 5 µg/m3
3:00 AM GREH PM10 24 Good 24 26 µg/m3
3:00 AM GREH PM2.5 24 Moderate 56 14 µg/m3
3:00 AM GRET CO 8 Good 6 0.5 PPM
3:00 AM GRET O3 8 Good 1 1 PPB
3:00 AM H24 CO 8 Good 6 0.5 PPM
3:00 AM H24 SO2 1 Good 1 1 PPB
3:00 AM I25DEN CO 8 Good 16 1.4 PPM
3:00 AM I25DEN NO2 1 Good 39 41 PPB
3:00 AM I25DEN PM10 24 Good 28 30 µg/m3
3:00 AM I25DEN PM2.5 24 Good 48 12 µg/m3
3:00 AM I25GLO NO2 1 Moderate 60 62 PPB
3:00 AM I25GLO PM10 24 Good 40 43 µg/m3
3:00 AM I25GLO PM2.5 24 Moderate 54 14 µg/m3
3:00 AM LNGM PM2.5 24 Good 45 11 µg/m3
3:00 AM MAN O3 8 Good 21 23 PPB
3:00 AM NJH PM2.5 24 Good 37 9 µg/m3
3:00 AM NREL O3 8 Good 20 22 PPB
3:00 AM PDX O3 8 Good 22 24 PPB
3:00 AM RFN O3 8 Good 23 25 PPB
3:00 AM RIFL PM2.5 24 Good 20 5 µg/m3
3:00 AM SWAN NO2 1 Good 39 41 PPB
3:00 AM SWAN PM2.5 24 Good 45 11 µg/m3
3:00 AM WBY CO 8 Good 12 1.1 PPM
3:00 AM WBY NO2 1 Good 36 38 PPB
3:00 AM WBY NO2 1 Good 36 38 PPB
3:00 AM WBY O3 8 Good 0 0 PPB
3:00 AM WBY PM10 24 Good 16 17 µg/m3
3:00 AM WBY SO2 1 Good 3 2 PPB
3:00 AM WBY SO2 1 Good 3 2 PPB
3:00 AM WCH O3 8 Good 25 27 PPB
2:00 AM ACAD O3 8 Good 6 6 PPB
2:00 AM ADM PM10 24 Good 28 30 µg/m3
2:00 AM ADM PM2.5 24 Good 47 11 µg/m3
2:00 AM ASP O3 8 Good 37 40 PPB
2:00 AM ASPN O3 8 Good 35 38 PPB
2:00 AM ASPN2 PM10 24 Moderate 59 72 µg/m3
2:00 AM ASPN2 PM2.5 24 Moderate 56 14 µg/m3
2:00 AM BOU PM2.5 24 Good 24 6 µg/m3
2:00 AM BOUR O3 8 Good 8 9 PPB
2:00 AM CAMP CO 8 Good 12 1.1 PPM
2:00 AM CAMP NO2 1 Moderate 52 55 PPB
2:00 AM CAMP NO2 1 Moderate 52 55 PPB
2:00 AM CAMP O3 8 Good 0 0 PPB
2:00 AM CAMP PM10 24 Good 32 35 µg/m3
2:00 AM CAMP PM2.5 24 Good 50 12 µg/m3
2:00 AM CAMP SO2 1 Good 6 4 PPB
2:00 AM CAMP SO2 1 Good 6 4 PPB
2:00 AM CASA CO 8 Good 15 1.3 PPM
2:00 AM CASA NO2 1 Good 42 44 PPB
2:00 AM CASA O3 8 Good 1 1 PPB
2:00 AM CASA PM10 24 Good 27 29 µg/m3
2:00 AM CASA PM2.5 24 Good 46 11 µg/m3
2:00 AM CASA SO2 1 Good 6 4 PPB
2:00 AM CCOL PM10 24 Good 13 14 µg/m3
2:00 AM CCOL PM2.5 24 Good 30 7 µg/m3
2:00 AM CHAT O3 8 Good 17 18 PPB
2:00 AM CHAT PM10 24 Moderate 96 146 µg/m3
2:00 AM CHAT PM2.5 24 Moderate 59 16 µg/m3
2:00 AM DELT PM2.5 24 Good 47 11 µg/m3
2:00 AM ELK O3 8 Good 31 34 PPB
2:00 AM FTC CO 8 Good 6 0.5 PPM
2:00 AM FTC O3 8 Good 1 1 PPB
2:00 AM FTCF PM10 24 Good 13 14 µg/m3
2:00 AM FTCF PM2.5 24 Good 38 9 µg/m3
2:00 AM FTCW O3 8 Good 9 10 PPB
2:00 AM GJPB PM10 24 Good 7 8 µg/m3
2:00 AM GJPB PM2.5 24 Good 20 5 µg/m3
2:00 AM GREH PM10 24 Good 23 25 µg/m3
2:00 AM GREH PM2.5 24 Moderate 55 14 µg/m3
2:00 AM GRET CO 8 Good 6 0.5 PPM
2:00 AM GRET O3 8 Good 1 1 PPB
2:00 AM H24 CO 8 Good 6 0.5 PPM
2:00 AM H24 SO2 1 Good 1 1 PPB
2:00 AM I25DEN CO 8 Good 15 1.3 PPM
2:00 AM I25DEN NO2 1 Good 39 41 PPB
2:00 AM I25DEN PM10 24 Good 27 29 µg/m3
2:00 AM I25DEN PM2.5 24 Good 46 11 µg/m3
2:00 AM I25GLO NO2 1 Moderate 51 54 PPB
2:00 AM I25GLO PM10 24 Good 39 42 µg/m3
2:00 AM I25GLO PM2.5 24 Moderate 53 13 µg/m3
2:00 AM LNGM PM2.5 24 Good 44 11 µg/m3
2:00 AM MAN O3 8 Good 19 21 PPB
2:00 AM NJH PM2.5 24 Good 37 9 µg/m3
2:00 AM NREL O3 8 Good 19 21 PPB
2:00 AM PDX O3 8 Good 22 24 PPB
2:00 AM RFN O3 8 Good 23 25 PPB
2:00 AM RIFL PM2.5 24 Good 19 5 µg/m3
2:00 AM SWAN NO2 1 Good 35 37 PPB
2:00 AM SWAN PM2.5 24 Good 44 11 µg/m3
2:00 AM WBY CO 8 Good 11 1.0 PPM
2:00 AM WBY NO2 1 Good 37 39 PPB
2:00 AM WBY NO2 1 Good 37 39 PPB
2:00 AM WBY O3 8 Good 0 0 PPB
2:00 AM WBY PM10 24 Good 15 16 µg/m3
2:00 AM WBY SO2 1 Good 3 2 PPB
2:00 AM WBY SO2 1 Good 3 2 PPB
2:00 AM WCH O3 8 Good 23 25 PPB
1:00 AM ACAD O3 8 Good 6 7 PPB
1:00 AM ADM PM10 24 Good 27 29 µg/m3
1:00 AM ADM PM2.5 24 Good 44 11 µg/m3
1:00 AM ASP O3 8 Good 34 37 PPB
1:00 AM ASPN O3 8 Good 34 37 PPB
1:00 AM BOU PM2.5 24 Good 25 6 µg/m3
1:00 AM BOUR O3 8 Good 8 9 PPB
1:00 AM CAMP CO 8 Good 12 1.1 PPM
1:00 AM CAMP NO2 1 Moderate 53 56 PPB
1:00 AM CAMP NO2 1 Moderate 53 56 PPB
1:00 AM CAMP O3 8 Good 1 1 PPB
1:00 AM CAMP PM10 24 Good 31 34 µg/m3
1:00 AM CAMP PM2.5 24 Good 47 11 µg/m3
1:00 AM CAMP SO2 1 Good 6 4 PPB
1:00 AM CAMP SO2 1 Good 6 4 PPB
1:00 AM CASA CO 8 Good 15 1.3 PPM
1:00 AM CASA NO2 1 Good 42 45 PPB
1:00 AM CASA O3 8 Good 1 1 PPB
1:00 AM CASA PM10 24 Good 26 28 µg/m3
1:00 AM CASA PM2.5 24 Good 43 10 µg/m3
1:00 AM CCOL PM10 24 Good 12 13 µg/m3
1:00 AM CCOL PM2.5 24 Good 30 7 µg/m3
1:00 AM CHAT O3 8 Good 19 21 PPB
1:00 AM CHAT PM10 24 Moderate 95 143 µg/m3
1:00 AM CHAT PM2.5 24 Moderate 59 16 µg/m3
1:00 AM DELT PM2.5 24 Good 47 11 µg/m3
1:00 AM ELK O3 8 Good 31 34 PPB
1:00 AM FTC CO 8 Good 7 0.6 PPM
1:00 AM FTC O3 8 Good 0 0 PPB
1:00 AM FTCF PM10 24 Good 13 14 µg/m3
1:00 AM FTCF PM2.5 24 Good 36 9 µg/m3
1:00 AM FTCW O3 8 Good 7 8 PPB
1:00 AM GJPB PM10 24 Good 7 8 µg/m3
1:00 AM GJPB PM2.5 24 Good 21 5 µg/m3
1:00 AM GREH PM10 24 Good 22 24 µg/m3
1:00 AM GREH PM2.5 24 Moderate 53 13 µg/m3
1:00 AM GRET CO 8 Good 5 0.4 PPM
1:00 AM GRET O3 8 Good 2 2 PPB
1:00 AM H24 CO 8 Good 6 0.5 PPM
1:00 AM I25DEN CO 8 Good 14 1.2 PPM
1:00 AM I25DEN NO2 1 Good 39 41 PPB
1:00 AM I25DEN PM10 24 Good 26 28 µg/m3
1:00 AM I25DEN PM2.5 24 Good 43 10 µg/m3
1:00 AM I25GLO NO2 1 Good 47 50 PPB
1:00 AM I25GLO PM10 24 Good 38 41 µg/m3
1:00 AM I25GLO PM2.5 24 Moderate 52 13 µg/m3
1:00 AM LNGM PM2.5 24 Good 44 11 µg/m3
1:00 AM MAN O3 8 Good 19 21 PPB
1:00 AM NJH PM2.5 24 Good 35 9 µg/m3
1:00 AM NREL O3 8 Good 20 22 PPB
1:00 AM PDX O3 8 Good 24 26 PPB
1:00 AM RFN O3 8 Good 25 27 PPB
1:00 AM RIFL PM2.5 24 Good 20 5 µg/m3
1:00 AM SWAN NO2 1 Good 35 37 PPB
1:00 AM SWAN PM2.5 24 Good 43 10 µg/m3
1:00 AM WBY CO 8 Good 10 0.9 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 1 1 PPB
1:00 AM WBY PM10 24 Good 14 15 µg/m3
1:00 AM WCH O3 8 Good 22 24 PPB

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