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Daily Maximum Eight-Hour Ozone Averages for June 2018

The table below lists the peak daily maximum eight-hour ozone concentrations measured in June 2018 in each community where the IDEM measures ozone. Concentrations that are rated Moderate or higher are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion.

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 with AQI colors
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
North West
Hammond-141st St1252344493039483245262033444954514241161Hammond-141st St
Ogden Dunes1243046523746583551302837485667584945191Ogden Dunes
Michigan City-W. Michigan Blvd1263345573949603655373441495868615258221Michigan City-W. Michigan Blvd
Valparaiso1254345553852623055412937506565605244191Valparaiso
Gary-IITRI1243045493746593450292537485465584842181Gary-IITRI
LaPorte-E. Lincolnway1304044513747633546453235475862585244191LaPorte-E. Lincolnway
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
North Central
South Bend-Shields Dr1534244533854664449423541476071585750271South Bend-Shields Dr
Bristol1543744493750654245313634445769525348231Bristol
Potato Creek State Park1474046503847693748383232475763535142231Potato Creek State Park
Granger-Beckley St1533744513853644047323633465970525651251Granger-Beckley St
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
North East
Fort Wayne-Beacon St1523649434350675251383143495671625644231Fort Wayne-Beacon St
Leo HS1563750434551716154363844505971676250231Leo HS
Roanoke Elem. School1504050424753665549423244495266575443231Roanoke Elem. School
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
West Central
Terre Haute-Lafayette Ave1556352476360617446414838455465635340281Terre Haute-Lafayette Ave
Flora1604352545649645553474643555266595443271Flora
Sandcut154535346635660714245NA37435259584738261Sandcut
West Union1525553466453586646474535445454534435241West Union
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
East Central
Emporia1605455505952727657474646515070716353291Emporia
Albany15851544448516959NVNANANANANA71656352331Albany
Indpls-Washington Park1002506153697253374339475877675847311Indpls-Washington Park
Indpls-Harding St1616756516160707456414837516075665746271Indpls-Harding St
Indpls-Ft. Harrison1615256526452767857404443485180NANA51321Indpls-Ft. Harrison
Monrovia1565551466050667051454233465054575241271Monrovia
Whitestown1635554536161637357485044555769636043281Whitestown
Avon1545552476159647352404436506161585542271Avon
Fairland1585455496352717358434940445270645848301Fairland
Noblesville-191st St1595354516252707154414446515479625845301Noblesville-191st St
Hope1NANANA526251726956484737465162615449291Hope
Indpls - I-70 E146534736NVNANANANANANA37345371605442231Indpls - I-70 E
Kokomo - E. Vaile Ave.1624653535851656058464547555273655944351Kokomo - E. Vaile Ave.
Helmsburg1485854466448696248434234424752584647221Helmsburg
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
South West
Boonville1556052486370757355494440NV5767636246261Boonville
Evansville-Buena Vista Rd1535953506264756853515038526173585443261Evansville-Buena Vista Rd
Inglefield1505751486063736852484736496064565042251Inglefield
St. Philips1555153506366706753565040546066545044241St. Philips
Leopold1505651466248606054433434515153535351261Leopold
Dayville1585952486867706549464537525563555740241Dayville
Plummer1556453486650787958464539485559645243261Plummer
AreaMonitoring SitePOCJune 2018POCMonitoring Site
12345678910111213141516171819
South East
New Albany1465752466255736959453035456381836152271New Albany
Charlestown State Park1NANANA426153737762463340476275666050261Charlestown State Park
Brownstown1525452456553676558444737485360575247271Brownstown
POC (Parameter Occurrence Code): a code used to correctly separate data from multiple instruments at one site.
NV - There are not enough valid eight-hour averages for this day (there must be eighteen valid eight-hour averages).
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.