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Peak Daily One-Hour Ozone Averages for June 2018

The table below lists the peak daily one-hour ozone concentrations measured in June 2018 in each community where the IDEM measures ozone. Concentrations are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion, and are truncated to an integer number.

The values that go into this table are calculated at 3:30 am each morning. Therefore, the current day will almost always have very low hourly averages that are not truly representative of local conditions for the day. Because of this, the report does not display the current day's data.

Use the selection boxes below to customize this report. You may select a different month, a different year, a different report format, and whether or not to include time on the report. Click on the Generate Report button once you have made your selections.

Month:Year:Report Format: Include time:
Include time
Highlight using AQI colors
AreaMonitoring SitePOCJune 2018POCMonitoring Site
North West
Hammond-141st St14631515442465635583928405060636044461Hammond-141st St
Ogden Dunes15032545950556637594030435262736653511Ogden Dunes
Michigan City-W. Michigan Blvd14637546543556840644437455263726657721Michigan City-W. Michigan Blvd
LaPorte-E. Lincolnway14945546047517150514735405166656357471LaPorte-E. Lincolnway
AreaMonitoring SitePOCJune 2018POCMonitoring Site
North Central
South Bend-Shields Dr16445566344587253554841434966766663531South Bend-Shields Dr
Potato Creek State Park16246576149538243524337355164665955451Potato Creek State Park
Granger-Beckley St16242536046566850513840394865765763561Granger-Beckley St
AreaMonitoring SitePOCJune 2018POCMonitoring Site
North East
Fort Wayne-Beacon St15740544650547259564635465361746659471Fort Wayne-Beacon St
Leo HS16141554651557467615142485366747065521Leo HS
Roanoke Elem. School15545544651577059574635485458726459461Roanoke Elem. School
AreaMonitoring SitePOCJune 2018POCMonitoring Site
West Central
Terre Haute-Lafayette Ave16067555366666778584950414957706557421Terre Haute-Lafayette Ave
West Union15662555268596474564951394761645851371West Union
AreaMonitoring SitePOCJune 2018POCMonitoring Site
East Central
Indpls-Washington Park1NANANA5865587578614347445367866964501Indpls-Washington Park
Indpls-Harding St16574595967677377644952425564857163491Indpls-Harding St
Indpls-Ft. Harrison167575859695783856749494755548540NA571Indpls-Ft. Harrison
Noblesville-191st St16559565766587879664549515661856762471Noblesville-191st St
Indpls - I-70 E14960504127NANANANANANA404662846558461Indpls - I-70 E
Kokomo - E. Vaile Ave.16653575864557063605049506056787062471Kokomo - E. Vaile Ave.
AreaMonitoring SitePOCJune 2018POCMonitoring Site
South West
Evansville-Buena Vista Rd15968565266688375655755455671816162481Evansville-Buena Vista Rd
St. Philips16055565466717776646556495965725756511St. Philips
AreaMonitoring SitePOCJune 2018POCMonitoring Site
South East
New Albany149615750686282766655424750719010475631New Albany
Charlestown State Park1-1-1-14767598285655840525165856966591Charlestown State Park
NA - Data not available.

Interpreting the AQI

Air Quality Index

Each NAAQS pollutant has a separate AQI scale, with an AQI rating of 100 corresponding to the concentration of the Federal Standard for that pollutant. Additional information about the AQI and how it can be used is available from the EPA's AirNow web site.

Place your mouse pointer over the scale displayed above to view information about the Air Quality Index, and each of the rating levels.

The actual index calculation is different for each parameter measured and is specified by the EPA. The following table shows the various breakpoints used in calculating the AQI.

AQI Breakpoint Definitions
AQI Range 1hr Ozone
in ppm
8hr Ozone
in ppm
0 - 50 Not Defined 0 - 0.054
51 - 100 Not Defined 0.055 - 0.070
101 - 150 0.125 - 0.164 0.071 - 0.085
151 - 200 0.165 - 0.204 0.086 - 0.105
201 - 300 0.205 - 0.404 0.106 - 0.200
301 - 400 0.405 - 0.504 0.201 - 0.2011
401 - 500 0.505 - 0.604 Not Defined
500+ Not Defined Not Defined

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.