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Use this form to retrieve hourly data collected at Indpls  I70 E. Although this is the most current data, it is not considered official until it has been certified by the technical staff. This information is updated hourly.
This web page provides the most current hourly averaged data available. Our convention for timetagging data is the beginning of each hour. For example, values shown for the noon hour are based on measurements taken from noon to 1:00 p.m. The noon average will not be calculated until after 1:00 p.m. The noon average will then be available on our external server from 1:15 p.m. to 1:30 p.m. This results in an apparent onehour time lag in the data. We also present our data in Local Standard Time for each measuring site. For most of Indiana this is Eastern Standard Time. During Daylight Savings, this introduces another apparent onehour time lag in the data.
Use the controls below to select a different date or time format and to control cell highlighting based on measured ozone, nitrogen dioxide or PM2.5 levels. Click on the Generate Report button once you have made your selections.
Click on the Plot Data button once the tabular report has been generated to open a separate window containing data plots.
The table below contains hourly averages for all the pollutants and meteorological conditions measured at Indpls  I70 E for Sunday, January 22, 2017. All times shown are in EST.
Parameter Measured  Morning  Afternoon  Parameter Measured  POC  

Mid  1:00  2:00  3:00  4:00  5:00  6:00  7:00  8:00  9:00  10:00  11:00  Noon  1:00  2:00  3:00  4:00  5:00  6:00  7:00  
Carbon Monoxide  0.389  0.402  0.522  0.535  0.350  0.247  0.234  0.269  0.214  0.252  0.276  0.312  0.410  0.443  0.396  0.405  0.429  0.367  0.339  NA  Carbon Monoxide  1 ^{R} 
Nitric Oxide  LIM  LIM  SPZ  SPZ  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Nitric Oxide  1 
Nitrogen Dioxide  LIM  LIM  SPZ  SPZ  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Nitrogen Dioxide  1 ^{R} 
Oxides of Nitrogen  11.1  17.1  39.2  22.4  18.2  5.1  10.0  18.8  8.1  8.4  15.9  24.7  46.5  43.3  37.3  41.2  35.5  25.9  23.6  NA  Oxides of Nitrogen  1 
Ozone  SPN  SPN  0  3  6  13  13  11  13  11  11  11  8  11  14  13  15  19  17  NA  Ozone  1 ^{R} 
Wind Speed  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Wind Speed  1 
Resultant Wind Speed  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Resultant Wind Speed  1 
Resultant Wind Direction  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Resultant Wind Direction  1 
Maximum Wind Gust  6.1  6.1  6.0  6.0  6.0  6.0  6.0  6.0  6.1  6.0  6.0  6.1  6.0  6.1  6.1  6.1  6.1  6.1  6.1  NA  Maximum Wind Gust  1 
Std. Dev. Wind Direction  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  LIM  NA  Std. Dev. Wind Direction  1 
Vertical Wind Direction  4.7  2.7  6.9  2.0  1.9  1.6  3.6  5.0  4.0  5.5  4.8  6.4  2.2  1.8  2.1  1.8  1.8  1.5  2.2  NA  Vertical Wind Direction  1 
Outdoor Temperature  58.3  56.3  54.0  53.1  52.8  53.5  54.0  53.5  53.1  54.2  55.9  58.0  59.9  62.0  63.0  63.1  62.9  62.5  60.0  NA  Outdoor Temperature  1 
Relative Humidity  74  79  83  86  86  84  82  82  83  82  79  76  72  69  64  65  66  69  77  NA  Relative Humidity  1 
Black Carbon PM2.5 (Std)  0.94  0.84  1.47  1.05  0.86  0.61  0.64  0.77  1.03  0.70  0.80  1.01  1.37  1.77  1.20  1.54  1.66  1.32  1.04  NA  Black Carbon PM2.5 (Std)  1 
UV Carbon  Organic Carbon  2.05  1.46  2.01  2.11  1.08  0.75  0.84  1.17  1.18  1.07  1.01  1.27  1.66  2.07  1.56  1.82  2.01  1.51  1.28  NA  UV Carbon  Organic Carbon  1 
PM2.5 (Local Conditions)  12.77  12.91  15.32  16.48  14.94  13.81  10.93  10.12  10.73  13.28  12.56  11.31  11.99  9.32  9.58  7.18  9.38  8.43  9.38  NA  PM2.5 (Local Conditions)  3 
Parameter Measured  Mid  1:00  2:00  3:00  4:00  5:00  6:00  7:00  8:00  9:00  10:00  11:00  Noon  1:00  2:00  3:00  4:00  5:00  6:00  7:00  Parameter Measured  POC 
Morning  Afternoon  
Maximum values for each parameter are bold within the table. Minimum values are bold italic.  
^{R}  Data from this instrument meets EPA quality assurance criteria for regulatory purposes. 
The colorcoding of the hourly PM2.5 data is based on a 1hour to 24hour projection. This projection is based on statistics compiled over several years comparing the daily maximum 1hour average to the midnighttomidnight 24hour average.
The table below shows the levels, colorcoding, and suggested actions for both the 1hour projection and the actual 24hour standard.
Color  Air Quality Rating  1Hour Average (µg/m³) 
24Hour Average (µg/m³) 
Actions to take 

Moderate  15.5  35.4  12.1  35.4 

PLEASE NOTE: This data has not been verified by the IDEM and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from IDEM ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.