Header

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

Ozone Hourly Averages

Ozone is a form of oxygen with three atoms instead of the usual two atoms. It is a photochemical oxidant and, at ground level, is the main component of smog. Unlike other gaseous pollutants, ozone is not emitted directly into the atmosphere. Instead, it is created in the atmosphere by the action of sunlight on volatile organic compounds and nitrogen oxides.

In general, higher levels of ozone usually occur on sunny days with light winds, primarily from March through October. An ozone exceedance day is counted if the measured eight-hour average ozone concentration exceeds the standards.

Use the controls below to select a different date or parameter and to control cell highlighting based on measured Ozone levels. Click on the Generate Report button once you have made your selections.

Click on the Plot Data button once the tabular report has been generated to open a separate window containing data plots.
Select a date: Time Format: Select a Parameter:
   
Ozone Highlights:  Moderate   Unhealthy for Sensitives   Unhealthy   Very Unhealthy  
Highlight validated data (Validated data has been manually reviewed by a data validator)
Select a Region:

Ozone Hourly Averages for Sunday, September 26, 2021.
measured in parts per billion
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
North West - all times are in CST
6 30313031 SPN29273135394344454647484540 FEW NA NA 6 1 R IDEM
13 26262627 SPN26262933384143444646464643 FEW NA NA 13 1 R IDEM
16 31313131 SPN30313034394344444546454544 FEW NA NA 16 1 R IDEM
28 28272932 SPN31313035394143444647474644 FEW NA NA 28 1 R IDEM
31 22202219 SPN19222530364041434344454339 FEW NA NA 31 1 R IDEM
34 27262525 SPN24242529374142434445454241 FEW NA NA 34 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
North Central - all times are in EST
5 29293030292929282830354042434447464441 FEW NA 5 1 R IDEM
21 2222222323 SPN24242528344043444644424143 FEW NA 21 1 R IDEM
74 2728303130 SPN30282730344043444446474339 FEW NA 74 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
North East - all times are in EST
7 14181817171716202428333841434444424142 FEW NA 7 1 R IDEM
19 1414161619 SPN1922273337414445454646434343 NA 19 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
West Central - refer to the first data column for each site's specific time zone
EST9 -10111 SPN141725324045434447464338 FEW NA 9 1 R IDEM
EST36 1514141821 SPN21242833394244464644444338 FEW NA 36 1 R IDEM
EST37 889910 SPN8122130343844434245434237 FEW NA 37 1 R IDEM
CST38 4455 SPN472333394242434445444239 FEW NA NA 38 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
East Central - all times are in EST
35 149111112 SPN16202731354045495148454341 FEW NA 35 2 R IDEM
40 149879 SPN15202634384246505252464340 FEW NA 40 1 R IDEM
42 00012 SPN261421274044434343444442 FEW NA 42 1 R IDEM
56 74798 SPN061519314143434444434143 FEW NA 56 1 R IDEM
60 77448 SPN11162226313947474645464644 FEW NA 60 1 R IDEM
65 2725272626 SPN24263138414446474948464642 FEW NA 65 1 R IDEM
66 1311141214 SPN17182227364242444445454543 FEW NA 66 1 R IDEM
68 2018191711 SPN12111726354243454644454543 FEW NA 68 1 R IDEM
71 97677 SPN9132027354046484848454444 FEW NA 71 1 R IDEM
76 1715151311 SPN7101524353944474647484744 FEW NA 76 1 R IDEM
78 43355 SPN SPN71521273843424344454444 FEW NA 78 1 R IDEM
79 2725242526 SPN26273035414445464646454641 FEW NA 79 1 R IDEM
80 00000 SPN00215313642414348463718 FEW NA 80 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
South West - refer to the first data column for each site's specific time zone
CST12 2100 SPN021327374548484746474541 FEW NA NA 12 1 R IDEM
CST24 20171716 SPN8102027353942464745434032 FEW NA NA 24 1 R IDEM
CST33 4434 SPN331730364244464746444442 FEW NA NA 33 1 R IDEM
CST49 20201610 SPN6142735414445464646484537 FEW NA NA 49 1 R IDEM
CST52 1100 SPN021625344444454545424040 FEW NA NA 52 1 R IDEM
EST67 75564 SPN451931374549484749514946 FEW NA 67 1 R IDEM
RegionCAMSMorningAfternoonCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:0010:0011:00Noon 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00
South East - all times are in EST
3 32221 SPN141324364245434445474332 FEW NA 3 1 R IDEM
4 51012 SPN271221334147484647484437 FEW NA 4 1 R IDEM
Maximum values for the day are bold within the table. Minimum values are bold italic.
 R - Data from this instrument meets EPA quality assurance criteria for regulatory purposes.

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.