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Daily Maximum Eight-Hour Ozone Averages for June 2019

The table below lists the peak daily maximum eight-hour ozone concentrations measured in June 2019 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 2019POCMonitoring Site
123456789101112131415161718192021222324
North West
Hammond-141st St14134295166424946302854433052373030344031264539281Hammond-141st St
Ogden Dunes14437335374475852353054473055403330414430354442281Ogden Dunes
Michigan City-W. Michigan Blvd14738355671476059343258493057443031414734364646331Michigan City-W. Michigan Blvd
Valparaiso15740405774436059293456492958432223494728314644321Valparaiso
Gary-IITRI14539355371475553342956463156423032414430364536271Gary-IITRI
LaPorte-E. Lincolnway152NA385370385956282754482754403522424631304543291LaPorte-E. Lincolnway
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
North Central
South Bend-Shields Dr15739395766456357312857532954433523515339394747321South Bend-Shields Dr
Bristol15335345362405652322652492651382228544335374245301Bristol
Potato Creek State Park15539445870516258303053472852413819485235354646271Potato Creek State Park
Granger-Beckley St1583837546642615532NV54522753412724505140374547321Granger-Beckley St
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
North East
Fort Wayne-Beacon St16141426355485452342853553553384329544937394246361Fort Wayne-Beacon St
Leo HS16244426963505755372856543856414031535039424347391Leo HS
Roanoke Elem. School15938416554505351NV2847523053414430554336354042311Roanoke Elem. School
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
West Central
Terre Haute-Lafayette Ave15650586349686346314355514556374333494243374738311Terre Haute-Lafayette Ave
Flora15943525851615653314056533452415139555541434542361Flora
Sandcut15348536146676145274252494454374227484040354337311Sandcut
West Union151485256525258393143534944NVNANANA43NVNA4048NV351West Union
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
East Central
Emporia15743556447595449333651543551434733454443394439331Emporia
Albany15039425942505347293051513046334230423734NANANANA1Albany
Indpls-Washington Park15245555839625548274255513553334022374140393733251Indpls-Washington Park
Indpls-Harding St15246545339665550284156503550344124453938394035261Indpls-Harding St
Indpls-Ft. Harrison15746566344635751294256543656374628434544414238301Indpls-Ft. Harrison
Monrovia15348535847665647284654464056NANANA45NANANANANANA1Monrovia
Whitestown15344546047655853304559543455414538485042484237341Whitestown
Avon15044NVNA43685645254556483654334024454139363932291Avon
Fairland15348556346605246303749513751444330474439404037331Fairland
Noblesville-191st St15443556445645751313954563857394639474644424240321Noblesville-191st St
Hope15356536349625847344447524251494542464542404038331Hope
Indpls - I-70 E15141405835574249273153482853344124303830373935261Indpls - I-70 E
Kokomo - E. Vaile Ave.1584350NA47595653313755553756415328NVNA40424644371Kokomo - E. Vaile Ave.
Helmsburg15152465644575443254146444151434333383639354030311Helmsburg
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
South West
Boonville16155545653575337374348524454533944334545454230391Boonville
Evansville-Buena Vista Rd15755575449645336414550504553533641343944474030361Evansville-Buena Vista Rd
Inglefield15453485246584933394248454452513638344044434131371Inglefield
St. Philips15754535248645338444550494652563846384646474234421St. Philips
Leopold16457545857485135284050484552524040314444424030311Leopold
Dayville159555455NANANANANANANA534553544044324546474230351Dayville
Plummer15454536051525541284447524459504738464645394434361Plummer
AreaMonitoring SitePOCJune 2019POCMonitoring Site
123456789101112131415161718192021222324
South East
New Albany15354555551534133263741414750514028203741574028211New Albany
Charlestown State Park152524854NA473932263539414553523934274441443733221Charlestown State Park
Brownstown15552485648555539314251474549444435384340434233321Brownstown
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.