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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 Wednesday, June 28, 2017.
measured in parts per billion
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
North West - all times are in CST
6 21212119 NA NA 6 1 R IDEM
13 16171819 NA NA 13 1 R IDEM
16 25252115 NA NA 16 1 R IDEM
31 15171819 NA NA 31 1 R IDEM
34 CAL141113 NA NA 34 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
North Central - all times are in EST
5 1519232325 NA 5 1 R IDEM
18 58121217 NA 18 1 R IDEM
21 1820211720 NA 21 1 R IDEM
74 8101098 NA 74 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
North East - all times are in EST
7 3371211 NA 7 1 R IDEM
19 116321 NA 19 1 R IDEM
27 91011 NA 27 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
West Central - refer to the first data column for each site's specific time zone
EST9 86121716 NA 9 1 R IDEM
EST36 2117111414 NA 36 1 R IDEM
EST37 1211142217 NA 37 1 R IDEM
CST38 51378 NA NA 38 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
East Central - all times are in EST
1 05121820 NA 1 1 R IDEM
25 2022202124 NA 25 1 R IDEM
40 1113141717 NA 40 1 R IDEM
42 100812 NA 42 1 R IDEM
56 113131516 NA 56 1 R IDEM
60 4592120 NA 60 1 R IDEM
63 1413131925 NA 63 1 R IDEM
64 2232312820 NA 64 1 R IDEM
65 51785 NA 65 1 R IDEM
66 1412111316 NA 66 1 R IDEM
68 1221547 NA 68 1 R IDEM
71 44436 NA 71 1 R IDEM
76 2118191918 NA 76 1 R IDEM
78 101412 NA 78 1 R IDEM
80 SPZ SPZ LIM LIM LIM NA 80 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
South West - refer to the first data column for each site's specific time zone
CST12 12101011 NA NA 12 1 R IDEM
CST15 0224 NA NA 15 1 R IDEM
CST20 0000 NA NA 20 1 R IDEM
CST24 27201815 NA NA 24 1 R IDEM
CST33 16151826 NA NA 33 1 R IDEM
CST49 25131821 NA NA 49 1 R IDEM
CST52 2115 NA NA 52 1 R IDEM
EST67 6671824 NA 67 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00 3:00 4:00 5:00
South East - all times are in EST
3 77763 NA 3 1 R IDEM
4 98644 NA 4 1 R IDEM
59 11119910 NA 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.