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Peak Daily One-Hour Ozone Averages for June 2017

The table below lists the peak daily one-hour ozone concentrations measured in June 2017 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 2017POCMonitoring Site
123456789101112131415161718192021222324252627
North West
Hammond-141st St15281717758363758817262547139905956474452614757413440471Hammond-141st St
Ogden Dunes15778797364363963877360559841805954485155564959443640481Ogden Dunes
Michigan City-W. Michigan Blvd158728887643941618976676410251916961515158585361463946521Michigan City-W. Michigan Blvd
Valparaiso1637482NANANANA71937666619247926360504557684858453843341Valparaiso
Gary-IITRI16281747865364063867463588240856053464451544556403538461Gary-IITRI
LaPorte-E. Lincolnway1616877695939415889726558NANANANANANANANANANANANANANANA1LaPorte-E. Lincolnway
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
North Central
South Bend-Shields Dr15566767060435060927870625650766460564859685552474143381South Bend-Shields Dr
Bristol15162696749424556857364565646665753514751544746433841361Bristol
Potato Creek State Park16166726764424758897164554944695855524153634450453839381Potato Creek State Park
Granger-Beckley St15461707058424758887567595451756157534857615549463944371Granger-Beckley St
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
North East
Fort Wayne-Beacon St16458715962435056637663555449556759514654664147474039461Fort Wayne-Beacon St
Leo HS16757726160445455647766585755656463534455694646504142481Leo HS
Roanoke Elem. School16361696063445355637563554650586358494555633949464141431Roanoke Elem. School
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
West Central
Terre Haute-Lafayette Ave16072716776504960727459504347597558505260664843454544411Terre Haute-Lafayette Ave
Flora16372737175485158657462555250656359515158644649443850411Flora
Sandcut15970686676505056727359494746617458515258614840454344421Sandcut
West Union16174676976524760727260454443627256475359683343454444431West Union
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
East Central
Indpls-E.16th St16075717274484657717257513952537556535458714538444444441Indpls-E.16th St
Emporia15974747167464553717355574450546756502856783937413943401Emporia
Albany15765776962444448727457614944566558445159604039423740371Albany
Indpls-Washington Park15872697175484656697155503950527553535356673839444344441Indpls-Washington Park
Indpls-Harding St15769656871474556696855483542486350515156643336434242421Indpls-Harding St
Indpls-Ft. Harrison16079737574484654697155524151537455525358684339444243411Indpls-Ft. Harrison
Monrovia14856565962443851626048413344495259324751604237404039361Monrovia
Trafalgar15461636669474154686553504243475853395052623633394339381Trafalgar
Whitestown15968686775484854687359514451566860525157623644444243421Whitestown
Avon15663647072484754717057484048536460535056654042444244411Avon
Fairland16580727171484451737457554048536959505457693737444544511Fairland
Noblesville-191st St15872726873484651717560534344547556555259704343454245411Noblesville-191st St
Hope16269737172494050736953504042506955385356653432424742451Hope
Indpls - I-70 E14462676956343552657056483743477253444251553827373435311Indpls - I-70 E
Helmsburg1566665637353425275685551434348NANANANANANA2433434843NA1Helmsburg
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
South West
Boonville16880817054584458716553443943707252NANA60622931415045571Boonville
Evansville-Buena Vista Rd16574746245644661695849403740676651315459582724415042541Evansville-Buena Vista Rd
Lynnville16378777061564558695850403840697153335153562632414740511Lynnville
Inglefield16978756551634760726151464247677153355559602730425043541Inglefield
St. Philips172827857NA645062746152464245697752345861625734445345541St. Philips
Leopold16666766251533941735854464548636255385662763629404947521Leopold
Dayville17077806151574558726152453944717050375661612428435145541Dayville
Plummer16065717672544854767056514749617262455259633539434746441Plummer
AreaMonitoring SitePOCJune 2017POCMonitoring Site
123456789101112131415161718192021222324252627
South East
New Albany16279788157523145636053424251498157415662623723405144491New Albany
Charlestown State Park15868747557523246636756504853507158415559613624395043441Charlestown State Park
Brownstown16064706765524047706350484446506124NA5559643411NANANA421Brownstown
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.