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Peak Daily One-Hour Ozone Averages for June 2019

The table below lists the peak daily one-hour ozone concentrations measured in June 2019 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 2019POCMonitoring Site
1234567891011121314151617181920212223
North West
Hammond-141st St147393261765052493631564940564336334045373048471Hammond-141st St
Ogden Dunes154403860855364553637585141604741334248353848501Ogden Dunes
Michigan City-W. Michigan Blvd150413962785663613640625537625037354350373848541Michigan City-W. Michigan Blvd
Valparaiso163424561834766633439595239635132255452313349511Valparaiso
Gary-IITRI150403861815460573932595039604939344347343948461Gary-IITRI
LaPorte-E. Lincolnway157344559814461593332575230584639254650353347501LaPorte-E. Lincolnway
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
North Central
South Bend-Shields Dr162424364725167593634605538565040285861434850521South Bend-Shields Dr
Bristol158403762645061543535575238534324326152374444501Bristol
Potato Creek State Park161424862815567613537585236554841305359404149501Potato Creek State Park
Granger-Beckley St162414064684966583732575533554941325455454347531Granger-Beckley St
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
North East
Fort Wayne-Beacon St165454670695260563737555845594949325755404245521Fort Wayne-Beacon St
Leo HS169484575735362594036615947605050365657424846511Leo HS
Roanoke Elem. School163434570725758553634515936604847346347404146471Roanoke Elem. School
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
West Central
Terre Haute-Lafayette Ave158536270557267493947575549574448385447464051431Terre Haute-Lafayette Ave
Flora165485862586459553348586139554554465863474848471Flora
Sandcut156505767526964493445575448564244305345434146411Sandcut
West Union15653556659566444334557514556NANANA4521NA4551381West Union
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
East Central
Emporia162465973496156523640536044555050374848484345451Emporia
Albany1564248624753615231355454374943443545403826NANA1Albany
Indpls-Washington Park156495963516458503447605838584243324448454440361Indpls-Washington Park
Indpls-Harding St155505859527059523347625438574043284843414444401Indpls-Harding St
Indpls-Ft. Harrison160496167546659543548616243614450355054484744421Indpls-Ft. Harrison
Monrovia1555058645569604933505849446143NANA4922NANANANA1Monrovia
Whitestown157485863546861573951656037594648435358466147421Whitestown
Avon1544756NA547358473051665338593844295345434743341Avon
Fairland156526171536456493445535740534847355149444243391Fairland
Noblesville-191st St158456168546761553746606444634851475153494844441Noblesville-191st St
Hope156615770577062503852495946555747444948464445461Hope
Indpls - I-70 E154454562476250513336585535584044324048364442381Indpls - I-70 E
Kokomo - E. Vaile Ave.1644555225464595634445760426145573416NA474648471Kokomo - E. Vaile Ave.
Helmsburg155555363516457482850515045545047394244444345361Helmsburg
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
South West
Boonville166585762606356444348516446575749513950484946331Boonville
Evansville-Buena Vista Rd163626161597356404749525749555754473944466144341Evansville-Buena Vista Rd
Inglefield159595158566551384347505147545546444046474746351Inglefield
St. Philips162606058557255434749545749545949524252485944371St. Philips
Leopold172616370605655443345545446555452483750484642351Leopold
Dayville16660596039NANANANANANA6247575850493952495349331Dayville
Plummer157575769615858483447496046625553415151474349371Plummer
AreaMonitoring SitePOCJune 2019POCMonitoring Site
1234567891011121314151617181920212223
South East
New Albany159565958576345353147444249535244322443447744311New Albany
Charlestown State Park155555360385945343045424647575546393453445542381Charlestown State Park
Brownstown159555161516059433448565047524947374549424646391Brownstown
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.