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 Tuesday, December 18, 2018.
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 111110016131822222022191245 FEW NA 6 1 R IDEM
13 111111121124283029292825181311 FEW NA 13 1 R IDEM
16 -1-11412758172224252527262619106 FEW NA 16 1 R IDEM
28 111612108121723252320262626211510 FEW NA 28 1 R IDEM
31 0000000192225222527212211108 FEW NA 31 1 R IDEM
34 02127109541320232325272825171018 FEW 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 0000000017212324252629281921 FEW 5 1 R IDEM
18 181613300016181718202225251952 FEW 18 1 R IDEM
21 98101112191519 FEW LOST LOST LOST LOST LOST LOST LOST LOST LOST NA NA NA 21 1 R IDEM
74 42022750171614212324262726141112 FEW 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 2117121113920212192424252526241991 FEW 7 1 R IDEM
19 2218161185223132626262627272621103 FEW 19 1 R IDEM
27 16141516161643371718202125262520172 FEW 27 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 SPZ CAL11111111122530303334332132 FEW 9 1 R IDEM
EST36 1095444002719232628303129201414 FEW 36 1 R IDEM
EST37 1287555411320262832353531302824 FEW 37 1 R IDEM
CST38 8423200151324282830302812105 FEW 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
25 19171213109353131921242729302927219 FEW 25 1 R IDEM
40 18613149820111151823262626241417 FEW 40 1 R IDEM
42 0000000005172124262829261911 FEW 42 1 R IDEM
56 0000000112614151416202321154 FEW 56 1 R IDEM
60 13109781110541015 QAS QAS222526231520 FEW 60 1 R IDEM
63 111000001719222424272829241813 FEW 63 1 R IDEM
65 1918161720202021192017182024242118311 FEW 65 1 R IDEM
66 108565211151117182121262923164 FEW 66 1 R IDEM
68 10481066112111821242629242425241 FEW 68 1 R IDEM
71 145388720111 QAS1821232424241120 FEW 71 1 R IDEM
76 611121294100121720232526282719129 FEW 76 1 R IDEM
78 2100000005162021242629261620 FEW 78 1 R IDEM
79 2001000021422232511000000 FEW 79 1 R IDEM
80 22221102221122262931312816102 FEW 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 000000016181922272929282078 FEW NA 12 1 R IDEM
CST15 00000001915172424182226900 FEW NA 15 1 R IDEM
CST24 12109351251216202325302727191820 FEW NA 24 1 R IDEM
CST33 9109646248151817181920151493 FEW NA 33 1 R IDEM
CST49 20191817161413141617182223242321191616 FEW NA 49 1 R IDEM
EST67 15118675454617242830353129252724 FEW 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 10002000031088111518181200 FEW 3 1 R IDEM
4 1313141086664513151624252525242117 FEW 4 1 R IDEM
59 171411141110998817182024242524212013 FEW 59 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.