Header

Agency Links
IN.gov Links
Gov. Eric J. Holcomb
Eric J. Holcomb
Governor
Eric J. Holcomb
Visit His Homepage

Daily Maximum Eight-Hour Ozone Averages for December 2018

The table below lists the peak daily maximum eight-hour ozone concentrations measured in December 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 SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
North West
Hammond-141st St11511241522202022121313201423251527181Hammond-141st St
Ogden Dunes11920343125292729291815252031261731261Ogden Dunes
Michigan City-W. Michigan Blvd12425403425333433322814262430261529241Michigan City-W. Michigan Blvd
Valparaiso12122312527232629271920282327282231231Valparaiso
Gary-IITRI11716292222212227241313221727261427211Gary-IITRI
LaPorte-E. Lincolnway11922263023282929272614242218211531231LaPorte-E. Lincolnway
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
North Central
South Bend-Shields Dr11819303223253029262714232214241929241South Bend-Shields Dr
Bristol1172225292226NVNANANANA221910192027201Bristol
Potato Creek State Park12325293427293030283019262514261730141Potato Creek State Park
Granger-Beckley St11821293222293029282714222113242029211Granger-Beckley St
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
North East
Fort Wayne-Beacon St11826242726252626252620191911202227231Fort Wayne-Beacon St
Leo HS12025243127282829252720221915222531251Leo HS
Roanoke Elem. School12123222328272625222719231613202226211Roanoke Elem. School
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
West Central
Terre Haute-Lafayette Ave130262324332025252713273021182420NV271Terre Haute-Lafayette Ave
Flora12724NV2328182524252724251512212224251Flora
Sandcut13126182433212427272230312521262222301Sandcut
West Union12827212431202424251925301618241925241West Union
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
East Central
Emporia12829192925192128242225252220222522261Emporia
Albany12429163127202222222124241815192224211Albany
Indpls-Washington Park12826202123162027252023241715222522231Indpls-Washington Park
Indpls-Harding St12627181721131824231622211812181912171Indpls-Harding St
Indpls-Ft. Harrison12222171920141927231821201614202219211Indpls-Ft. Harrison
Monrovia12930212330222525232132322213212422241Monrovia
Whitestown12626212225202026242523231517252321201Whitestown
Avon12528212427202426252230291516242721211Avon
Fairland1NVNANANA28192326232030312117202619241Fairland
Noblesville-191st St12726202526192326242429251714232621201Noblesville-191st St
Hope12929172127202826231927292318192321231Hope
Indpls - I-70 E1262416151510131716919191711141613221Indpls - I-70 E
Kokomo - E. Vaile Ave.12623212427182522242723231413222526121Kokomo - E. Vaile Ave.
Helmsburg12830212429222828261629332324202326241Helmsburg
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
South West
Boonville13231162331222525232529343029202224241Boonville
Evansville-Buena Vista Rd13231162329202223212426342727192225191Evansville-Buena Vista Rd
Inglefield12931152229211925202230352728202223231Inglefield
St. Philips13232162329222224212731352829202225171St. Philips
Leopold13234162229262624262933373425192027201Leopold
Dayville13231162230232122212530362927NVNANANA1Dayville
Plummer13129172332212727252029332630221924281Plummer
AreaMonitoring SitePOCDecember 2018POCMonitoring Site
123456789101112131415161718
South East
New Albany12336193027272126242229322417182024121New Albany
Charlestown State Park13235172828252928222528302822192226211Charlestown State Park
Brownstown12931212730233028242329322219212230221Brownstown
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.