Ozone Monitoring Season By State

As of July 1, 2004
Since ozone levels decrease significantly in the colder parts of the year in many areas, ozone is required to be monitored at NAMS and SLAMS monitoring sites only during the ``ozone season'' as designated in the AIRS files on a State by State basis and described below:

                    Ozone Monitoring Season By State
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              State                   Begin month          End month
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Alabama.........................  March.............  October.
Alaska..........................  April.............  October.
Arizona.........................  January...........  December.
Arkansas........................  March.............  November.
California......................  January...........  December.
Colorado........................  March.............  September.
Connecticut.....................  April.............  September.
Delaware........................  April.............  October.
District of Columbia............  April.............  October.
Florida.........................  March.............  October.
Georgia.........................  March.............  October.
Hawaii..........................  January...........  December.
Idaho...........................  April.............  October.
Illinois........................  April.............  October.
Indiana.........................  April.............  September.
Iowa............................  April.............  October.
Kansas..........................  April.............  October.
Kentucky........................  March.............  October.
Louisiana AQCRs 019, 022........  March.............  October.
Louisiana AQCR 106..............  January...........  December.
Maine...........................  April.............  September.
Maryland........................  April.............  October.
Massachusetts...................  April.............  September.
Michigan........................  April.............  September.
Minnesota.......................  April.............  October.
Mississippi.....................  March.............  October.
Missouri........................  April.............  October.
Montana.........................  June..............  September.
Nebraska........................  April.............  October.
Nevada..........................  January...........  December.
New Hampshire...................  April.............  September.
New Jersey......................  April.............  October.
New Mexico......................  January...........  December.
New York........................  April.............  October.
North Carolina..................  April.............  October.
North Dakota....................  May...............  September.
Ohio............................  April.............  October.
Oklahoma........................  March.............  November.
Oregon..........................  May...............  September.
Pennsylvania....................  April.............  October.
Puerto Rico.....................  January...........  December.
Rhode Island....................  April.............  September.
South Carolina..................  April.............  October.
South Dakota....................  June..............  September.
Tennessee.......................  March.............  October.
Texas AQCR 4,5,7,10,11..........  January...........  December
Texas AQCR 1, 2, 3, 6, 8, 9, 12.  March.............  October
Utah............................  May...............  September.
Vermont.........................  April.............  September.
Virginia........................  April.............  October.
Washington......................  May...............  September.
West Virginia...................  April.............  October.
Wisconsin.......................  April 15..........  October 15.
Wyoming.........................  April.............  October.
American Samoa..................  January...........  December.
Guam............................  January...........  December.
Virgin Islands..................  January...........  December.
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Ozone Monitoring Season By State

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