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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 Friday, August 23, 2019.
measured in parts per billion
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
North West - all times are in CST
6 SPZ NA NA 6 1 R IDEM
13 SPZ NA NA 13 1 R IDEM
16 SPZ NA NA 16 1 R IDEM
28 SPZ NA NA 28 1 R IDEM
31 SPZ NA NA 31 1 R IDEM
34 SPZ NA NA 34 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
North Central - all times are in EST
5 20 SPZ NA 5 1 R IDEM
18 14 SPZ NA 18 1 R IDEM
21 21 SPZ NA 21 1 R IDEM
74 20 SPZ NA 74 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
North East - all times are in EST
7 24 SPZ NA 7 1 R IDEM
19 21 SPZ NA 19 1 R IDEM
27 23 SPZ NA 27 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
West Central - refer to the first data column for each site's specific time zone
EST9 9 SPZ NA 9 1 R IDEM
EST36 14 SPZ NA 36 1 R IDEM
EST37 6 SPZ NA 37 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
East Central - all times are in EST
25 20 SPZ NA 25 1 R IDEM
40 17 SPZ NA 40 1 R IDEM
42 26 SPZ NA 42 1 R IDEM
56 24 SPZ NA 56 1 R IDEM
60 26 SPZ NA 60 1 R IDEM
63 14 SPZ NA 63 1 R IDEM
66 26 SPZ NA 66 1 R IDEM
68 23 SPZ NA 68 1 R IDEM
71 23 SPZ NA 71 1 R IDEM
76 19 SPZ NA 76 1 R IDEM
78 12 SPZ NA 78 1 R IDEM
79 23 SPZ NA 79 1 R IDEM
80 0 SPZ NA 80 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
South West - refer to the first data column for each site's specific time zone
CST12 CAL NA NA 12 1 R IDEM
CST15 SPZ NA NA 15 1 R IDEM
CST24 QAS NA NA 24 1 R IDEM
CST33 SPZ NA NA 33 1 R IDEM
CST49 SPZ NA NA 49 1 R IDEM
CST52 SPZ NA NA 52 1 R IDEM
EST67 12 SPZ NA 67 1 R IDEM
RegionCAMSMorningCAMSPOCEntity
Mid 1:00 2:00
South East - all times are in EST
3 14 SPZ NA 3 1 R IDEM
4 8 SPZ NA 4 1 R IDEM
59 10 SPZ 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.