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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, August 19, 2018.
measured in parts per billion
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
North West - all times are in CST
6 252622 FEW NA 6 1 R IDEM
13 29192 FEW NA 13 1 R IDEM
16 14136 FEW NA 16 1 R IDEM
28 6813 FEW NA 28 1 R IDEM
31 SPN LIM LIM LIM NA 31 1 R IDEM
34 113 FEW NA 34 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
North Central - all times are in EST
5 SPN631 FEW 5 1 R IDEM
18 SPN111 FEW 18 1 R IDEM
21 SPN101 FEW 21 1 R IDEM
74 SPN412 FEW 74 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
North East - all times are in EST
7 SPN171719 FEW 7 1 R IDEM
19 SPN15117 FEW 19 1 R IDEM
27 SPN101011 FEW 27 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
West Central - refer to the first data column for each site's specific time zone
EST9 SPN10107 FEW 9 1 R IDEM
EST36 SPN542 FEW 36 1 R IDEM
EST37 SPN1034 FEW 37 1 R IDEM
CST38 866 FEW NA 38 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
East Central - all times are in EST
25 SPN448 FEW 25 1 R IDEM
40 SPN459 FEW 40 1 R IDEM
42 3510 FEW NA 42 1 R IDEM
56 SPN121111 FEW 56 1 R IDEM
60 SPN91011 FEW 60 1 R IDEM
63 SPN011 FEW 63 1 R IDEM
65 SPN121110 FEW 65 1 R IDEM
66 SPN12119 FEW 66 1 R IDEM
68 SPN13119 FEW 68 1 R IDEM
71 SPN91010 FEW 71 1 R IDEM
76 SPN161613 FEW 76 1 R IDEM
78 1138 FEW 78 1 R IDEM
79 SPN131212 FEW 79 1 R IDEM
80 LIM LIM LIM LIM LIM 80 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
South West - refer to the first data column for each site's specific time zone
CST12 321 FEW NA 12 1 R IDEM
CST15 546 FEW NA 15 1 R IDEM
CST24 141112 FEW NA 24 1 R IDEM
CST33 744 FEW NA 33 1 R IDEM
CST49 131514 FEW NA 49 1 R IDEM
CST52 011 FEW NA 52 1 R IDEM
EST67 SPN212 FEW 67 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00
South East - all times are in EST
3 SPN765 FEW 3 1 R IDEM
4 SPN864 FEW 4 1 R IDEM
59 SPN743 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.