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AQI Calculations on 03/29/2026 1:00AM - 3:00AM

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.
3:00 AM ACAD O3 8 Good 40 43 PPB
3:00 AM ACC PM10 24 Good 19 20 µg/m3
3:00 AM ACC PM2.5 24 Good 29 5 µg/m3
3:00 AM ADB PM10 24 Good 43 46 µg/m3
3:00 AM ADB PM2.5 24 Good 45 8 µg/m3
3:00 AM ALA PM10 24 Good 40 43 µg/m3
3:00 AM ALA PM2.5 24 Good 31 5 µg/m3
3:00 AM ASPN O3 8 Good 34 37 PPB
3:00 AM ASPN2 PM10 24 Good 22 24 µg/m3
3:00 AM ASPN2 PM2.5 24 Good 22 4 µg/m3
3:00 AM AURE O3 8 Good 36 39 PPB
3:00 AM BHWK O3 8 Good 43 46 PPB
3:00 AM BOU PM10 24 Good 23 25 µg/m3
3:00 AM BOU PM2.5 24 Good 27 4 µg/m3
3:00 AM BOUR O3 8 Good 42 45 PPB
3:00 AM CAMP O3 8 Good 16 17 PPB
3:00 AM CAMP PM10 24 Good 21 23 µg/m3
3:00 AM CAMP PM2.5 24 Good 41 7 µg/m3
3:00 AM CAN PM10 24 Good 22 24 µg/m3
3:00 AM CAN PM2.5 24 Good 22 3 µg/m3
3:00 AM CASA CO 8 Good 5 0.4 PPM
3:00 AM CASA NO2 1 Good 5 5 PPB
3:00 AM CASA O3 8 Good 15 16 PPB
3:00 AM CASA PM10 24 Good 29 31 µg/m3
3:00 AM CASA PM2.5 24 Good 33 5 µg/m3
3:00 AM CCOL PM10 24 Good 25 27 µg/m3
3:00 AM CCOL PM2.5 24 Good 23 4 µg/m3
3:00 AM CHAT O3 8 Good 32 35 PPB
3:00 AM CHAT PM10 24 Good 24 26 µg/m3
3:00 AM CHAT PM2.5 24 Good 29 5 µg/m3
3:00 AM CTZ O3 8 Good 24 26 PPB
3:00 AM DELT PM10 24 Good 39 42 µg/m3
3:00 AM DELT PM2.5 24 Good 33 6 µg/m3
3:00 AM DELT PM2.5 24 Good 33 6 µg/m3
3:00 AM EVG O3 8 Good 32 35 PPB
3:00 AM FOS O3 8 Good 34 37 PPB
3:00 AM FTC CO 8 Good 2 0.2 PPM
3:00 AM FTC O3 8 Good 31 34 PPB
3:00 AM FTCF PM10 24 Good 27 29 µg/m3
3:00 AM FTCF PM2.5 24 Good 38 6 µg/m3
3:00 AM FTCW O3 8 Good 41 44 PPB
3:00 AM GJPB PM10 24 Good 29 31 µg/m3
3:00 AM GJPB PM2.5 24 Good 49 8 µg/m3
3:00 AM GREH PM10 24 Good 28 30 µg/m3
3:00 AM GREH PM2.5 24 Good 38 6 µg/m3
3:00 AM GRET CO 8 Good 1 0.1 PPM
3:00 AM GRET O3 8 Good 33 36 PPB
3:00 AM HLD O3 8 Good 37 40 PPB
3:00 AM I25GLO NO2 1 Good 13 14 PPB
3:00 AM I25GLO PM10 24 Good 35 38 µg/m3
3:00 AM I25GLO PM2.5 24 Good 36 6 µg/m3
3:00 AM LAST NO2 1 Good 3 3 PPB
3:00 AM LAST O3 8 Good 35 38 PPB
3:00 AM LMB PM10 24 Good 31 34 µg/m3
3:00 AM LMB PM2.5 24 Good 24 4 µg/m3
3:00 AM LNGM PM10 24 Good 30 32 µg/m3
3:00 AM LNGM PM2.5 24 Good 40 7 µg/m3
3:00 AM MAN O3 8 Good 45 49 PPB
3:00 AM MFP O3 8 Good 43 46 PPB
3:00 AM NJH PM10 24 Good 22 24 µg/m3
3:00 AM NJH PM2.5 24 Good 31 5 µg/m3
3:00 AM NREL O3 8 Good 42 45 PPB
3:00 AM PAG PM10 24 Good 28 30 µg/m3
3:00 AM PAG PM2.5 24 Good 29 5 µg/m3
3:00 AM PAL O3 8 Good 33 36 PPB
3:00 AM PFS PM10 24 Good 22 24 µg/m3
3:00 AM PFS PM2.5 24 Good 22 3 µg/m3
3:00 AM PMS PM2.5 24 Good 38 6 µg/m3
3:00 AM PWES O3 8 Good 38 41 PPB
3:00 AM RFN O3 8 Good 45 49 PPB
3:00 AM RIFL PM2.5 24 Good 23 4 µg/m3
3:00 AM RIFLO3 O3 8 Good 19 20 PPB
3:00 AM SSMB PM10 24 Good 22 24 µg/m3
3:00 AM SSMB PM2.5 24 Good 26 4 µg/m3
3:00 AM TEL PM10 24 Good 31 34 µg/m3
3:00 AM TEL PM2.5 24 Good 27 4 µg/m3
3:00 AM TIM NO2 1 Good 1 1 PPB
3:00 AM TIM O3 8 Good 27 29 PPB
3:00 AM TIM PM10 24 Good 33 36 µg/m3
3:00 AM TIM PM2.5 24 Good 36 6 µg/m3
3:00 AM WBY NO2 1 Good 8 9 PPB
3:00 AM WBY NO2 1 Good 8 9 PPB
3:00 AM WBY O3 8 Good 10 11 PPB
3:00 AM WBY PM10 24 Good 36 39 µg/m3
3:00 AM WBY PM2.5 24 Good 37 6 µg/m3
2:00 AM ACAD O3 8 Good 38 41 PPB
2:00 AM ACC PM10 24 Good 19 20 µg/m3
2:00 AM ACC PM2.5 24 Good 29 5 µg/m3
2:00 AM ADB PM10 24 Good 42 45 µg/m3
2:00 AM ADB PM2.5 24 Good 45 8 µg/m3
2:00 AM ALA PM10 24 Good 39 42 µg/m3
2:00 AM ALA PM2.5 24 Good 31 5 µg/m3
2:00 AM ASPN O3 8 Good 34 37 PPB
2:00 AM ASPN2 PM10 24 Good 22 24 µg/m3
2:00 AM ASPN2 PM2.5 24 Good 22 4 µg/m3
2:00 AM AURE O3 8 Good 37 40 PPB
2:00 AM BHWK O3 8 Good 43 46 PPB
2:00 AM BOU PM10 24 Good 23 25 µg/m3
2:00 AM BOU PM2.5 24 Good 28 5 µg/m3
2:00 AM BOUR O3 8 Good 42 45 PPB
2:00 AM CAMP O3 8 Good 18 19 PPB
2:00 AM CAMP PM10 24 Good 21 23 µg/m3
2:00 AM CAMP PM2.5 24 Good 42 7 µg/m3
2:00 AM CAMP SO2 1 Good 1 1 PPB
2:00 AM CAMP SO2 1 Good 1 1 PPB
2:00 AM CAN PM10 24 Good 22 24 µg/m3
2:00 AM CAN PM2.5 24 Good 22 3 µg/m3
2:00 AM CASA CO 8 Good 5 0.4 PPM
2:00 AM CASA NO2 1 Good 20 21 PPB
2:00 AM CASA O3 8 Good 13 14 PPB
2:00 AM CASA PM10 24 Good 29 31 µg/m3
2:00 AM CASA PM2.5 24 Good 33 6 µg/m3
2:00 AM CCOL PM10 24 Good 24 26 µg/m3
2:00 AM CCOL PM2.5 24 Good 23 4 µg/m3
2:00 AM CHAT O3 8 Good 32 35 PPB
2:00 AM CHAT PM10 24 Good 24 26 µg/m3
2:00 AM CHAT PM2.5 24 Good 30 5 µg/m3
2:00 AM CTZ O3 8 Good 27 29 PPB
2:00 AM DELT PM10 24 Good 39 42 µg/m3
2:00 AM DELT PM2.5 24 Good 33 6 µg/m3
2:00 AM DELT PM2.5 24 Good 33 6 µg/m3
2:00 AM EVG O3 8 Good 33 36 PPB
2:00 AM FOS O3 8 Good 33 36 PPB
2:00 AM FTC CO 8 Good 2 0.2 PPM
2:00 AM FTC O3 8 Good 31 33 PPB
2:00 AM FTCF PM10 24 Good 27 29 µg/m3
2:00 AM FTCF PM2.5 24 Good 38 6 µg/m3
2:00 AM FTCW O3 8 Good 42 45 PPB
2:00 AM GJPB PM10 24 Good 29 31 µg/m3
2:00 AM GJPB PM2.5 24 Good 48 8 µg/m3
2:00 AM GREH PM10 24 Good 28 30 µg/m3
2:00 AM GREH PM2.5 24 Good 38 6 µg/m3
2:00 AM GRET CO 8 Good 1 0.1 PPM
2:00 AM GRET O3 8 Good 32 35 PPB
2:00 AM HLD O3 8 Good 36 39 PPB
2:00 AM I25GLO NO2 1 Good 27 29 PPB
2:00 AM I25GLO PM10 24 Good 34 37 µg/m3
2:00 AM I25GLO PM2.5 24 Good 37 6 µg/m3
2:00 AM LAST NO2 1 Good 4 4 PPB
2:00 AM LAST O3 8 Good 35 38 PPB
2:00 AM LMB PM10 24 Good 31 33 µg/m3
2:00 AM LMB PM2.5 24 Good 24 4 µg/m3
2:00 AM LNGM PM10 24 Good 30 32 µg/m3
2:00 AM LNGM PM2.5 24 Good 41 7 µg/m3
2:00 AM MAN O3 8 Good 45 49 PPB
2:00 AM MFP O3 8 Good 43 46 PPB
2:00 AM NJH PM10 24 Good 22 24 µg/m3
2:00 AM NJH PM2.5 24 Good 31 5 µg/m3
2:00 AM NREL O3 8 Good 41 44 PPB
2:00 AM PAG PM10 24 Good 28 30 µg/m3
2:00 AM PAG PM2.5 24 Good 29 5 µg/m3
2:00 AM PAL O3 8 Good 35 38 PPB
2:00 AM PFS PM10 24 Good 22 24 µg/m3
2:00 AM PFS PM2.5 24 Good 22 3 µg/m3
2:00 AM PMS PM2.5 24 Good 38 6 µg/m3
2:00 AM PWES O3 8 Good 38 41 PPB
2:00 AM RFN O3 8 Good 45 49 PPB
2:00 AM RIFL PM2.5 24 Good 24 4 µg/m3
2:00 AM RIFLO3 O3 8 Good 20 22 PPB
2:00 AM SSMB PM10 24 Good 21 23 µg/m3
2:00 AM SSMB PM2.5 24 Good 25 4 µg/m3
2:00 AM TEL PM10 24 Good 32 35 µg/m3
2:00 AM TEL PM2.5 24 Good 27 4 µg/m3
2:00 AM TIM O3 8 Good 26 28 PPB
2:00 AM TIM PM10 24 Good 33 36 µg/m3
2:00 AM TIM PM2.5 24 Good 35 6 µg/m3
2:00 AM WBY NO2 1 Good 31 33 PPB
2:00 AM WBY NO2 1 Good 31 33 PPB
2:00 AM WBY O3 8 Good 11 12 PPB
2:00 AM WBY PM10 24 Good 36 39 µg/m3
2:00 AM WBY PM2.5 24 Good 37 6 µg/m3
1:00 AM ACAD O3 8 Good 37 40 PPB
1:00 AM ACC PM10 24 Good 19 20 µg/m3
1:00 AM ACC PM2.5 24 Good 29 5 µg/m3
1:00 AM ADB PM10 24 Good 42 45 µg/m3
1:00 AM ADB PM2.5 24 Good 44 7 µg/m3
1:00 AM ALA PM10 24 Good 38 41 µg/m3
1:00 AM ALA PM2.5 24 Good 30 5 µg/m3
1:00 AM ASPN O3 8 Good 35 38 PPB
1:00 AM ASPN2 PM10 24 Good 21 23 µg/m3
1:00 AM ASPN2 PM2.5 24 Good 22 3 µg/m3
1:00 AM AURE O3 8 Good 38 41 PPB
1:00 AM BHWK O3 8 Good 43 46 PPB
1:00 AM BOU PM10 24 Good 23 25 µg/m3
1:00 AM BOU PM2.5 24 Good 29 5 µg/m3
1:00 AM BOUR O3 8 Good 42 45 PPB
1:00 AM CAMP O3 8 Good 19 21 PPB
1:00 AM CAMP PM10 24 Good 21 23 µg/m3
1:00 AM CAMP PM2.5 24 Good 42 7 µg/m3
1:00 AM CAN PM10 24 Good 22 24 µg/m3
1:00 AM CAN PM2.5 24 Good 21 3 µg/m3
1:00 AM CASA CO 8 Good 5 0.4 PPM
1:00 AM CASA NO2 1 Good 22 23 PPB
1:00 AM CASA O3 8 Good 16 17 PPB
1:00 AM CASA PM10 24 Good 28 30 µg/m3
1:00 AM CASA PM2.5 24 Good 33 6 µg/m3
1:00 AM CCOL PM10 24 Good 24 26 µg/m3
1:00 AM CCOL PM2.5 24 Good 23 4 µg/m3
1:00 AM CHAT O3 8 Good 31 34 PPB
1:00 AM CHAT PM10 24 Good 24 26 µg/m3
1:00 AM CHAT PM2.5 24 Good 31 5 µg/m3
1:00 AM CTZ O3 8 Good 31 33 PPB
1:00 AM DELT PM10 24 Good 39 42 µg/m3
1:00 AM DELT PM2.5 24 Good 33 6 µg/m3
1:00 AM DELT PM2.5 24 Good 33 6 µg/m3
1:00 AM EVG O3 8 Good 34 37 PPB
1:00 AM FOS NO2 1 Good 1 1 PPB
1:00 AM FOS O3 8 Good 33 36 PPB
1:00 AM FTC CO 8 Good 2 0.2 PPM
1:00 AM FTC O3 8 Good 30 32 PPB
1:00 AM FTCF PM10 24 Good 28 30 µg/m3
1:00 AM FTCF PM2.5 24 Good 38 6 µg/m3
1:00 AM FTCW O3 8 Good 42 45 PPB
1:00 AM GJPB PM10 24 Good 28 30 µg/m3
1:00 AM GJPB PM2.5 24 Good 47 8 µg/m3
1:00 AM GREH PM10 24 Good 27 29 µg/m3
1:00 AM GREH PM2.5 24 Good 38 6 µg/m3
1:00 AM GRET CO 8 Good 1 0.1 PPM
1:00 AM GRET O3 8 Good 32 35 PPB
1:00 AM HLD O3 8 Good 36 39 PPB
1:00 AM I25GLO NO2 1 Good 29 31 PPB
1:00 AM I25GLO PM10 24 Good 34 37 µg/m3
1:00 AM I25GLO PM2.5 24 Good 36 6 µg/m3
1:00 AM LAST NO2 1 Good 4 4 PPB
1:00 AM LAST O3 8 Good 36 39 PPB
1:00 AM LMB PM10 24 Good 31 33 µg/m3
1:00 AM LMB PM2.5 24 Good 23 4 µg/m3
1:00 AM LNGM PM10 24 Good 30 32 µg/m3
1:00 AM LNGM PM2.5 24 Good 43 7 µg/m3
1:00 AM MAN O3 8 Good 44 48 PPB
1:00 AM MFP O3 8 Good 43 46 PPB
1:00 AM NJH PM10 24 Good 22 24 µg/m3
1:00 AM NJH PM2.5 24 Good 30 5 µg/m3
1:00 AM NREL O3 8 Good 41 44 PPB
1:00 AM PAG PM10 24 Good 28 30 µg/m3
1:00 AM PAG PM2.5 24 Good 29 5 µg/m3
1:00 AM PAL O3 8 Good 37 40 PPB
1:00 AM PFS PM10 24 Good 22 24 µg/m3
1:00 AM PFS PM2.5 24 Good 22 3 µg/m3
1:00 AM PMS PM2.5 24 Good 38 6 µg/m3
1:00 AM PWES O3 8 Good 39 42 PPB
1:00 AM RFN O3 8 Good 45 49 PPB
1:00 AM RIFL PM2.5 24 Good 23 4 µg/m3
1:00 AM RIFLO3 O3 8 Good 24 26 PPB
1:00 AM SSMB PM10 24 Good 21 23 µg/m3
1:00 AM SSMB PM2.5 24 Good 24 4 µg/m3
1:00 AM TEL PM10 24 Good 32 35 µg/m3
1:00 AM TEL PM2.5 24 Good 28 5 µg/m3
1:00 AM TIM NO2 1 Good 1 1 PPB
1:00 AM TIM O3 8 Good 25 27 PPB
1:00 AM TIM PM10 24 Good 33 36 µg/m3
1:00 AM TIM PM2.5 24 Good 35 6 µg/m3
1:00 AM WBY NO2 1 Good 36 38 PPB
1:00 AM WBY NO2 1 Good 36 38 PPB
1:00 AM WBY O3 8 Good 16 17 PPB
1:00 AM WBY PM10 24 Good 37 40 µg/m3
1:00 AM WBY PM2.5 24 Good 37 6 µg/m3

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