• What does an Ozone Alert day mean?


    Quick Facts:

    • There are two ozone layers, an upper layer which is good and protective, and a lower layer that is harmful to our quality of life
    • Excessive lower layer ozone exposure can lead to shortness of breath, chest pain, and wheezing or coughing
    • Taking precautions when an Ozone Alert is issued, can help minimize any further damage


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    The first "Ozone Alert Day" of 2019 was June 20th.

    Typically in Tulsa and surrounding areas, the "ozone awareness" season falls from May to September or the hottest months of the year. What happens during these months, is that the summer-time heat "cooks" ground-level pollutants leading to the "bad" layer of ozone. These pollutants can include chemical reactions from different gasses and the sunlight, emissions from industrial facilities and utilities, motor exhaust and gasoline vapors.

    If the measurements of these pollutants are above a safe level deemed by the EPA, then an Ozone Alert is issued for the area. 

    Long-term or repeated exposure to high levels of ozone may lead to some health problems, especially for the young, elderly, and those with pre-existing respiratory problems. It is possible to experience reduced lung function and increase respiratory discomfort.

    Ozone Alert Day Tips
    Ozone Alert Day Tips

    There are some things you can to do to help out on ozone alert days:

    • Avoid lawn work with gas-powered equipment 
    • Avoid filling up the gas tank in the middle of the day, wait till on your way home or another day
    • Try to carpool if possible, reducing emissions from multiple cars heading to the same place
    • Postpone any errands if at all possible, wait to do them on a different day


    Since 2000, there have been more than 150 days with an Ozone Alert issued for Tulsa County. There is a table below that breaks down the Ozone Alert Days issued by year and month.

    Year May June July August September Total Ozone Alert Days
    2019   20th       1
    2018 9th, 10th, 17th   19th, 20th, 25th 1st, 2nd, 10th   9
    2017   8th   3rd 13th 3
    2016   20th, 28th 28th 10th   4
    2015   10th       1
    2014     24th     1
    2013   13th 12th 22nd 4th 4
    2012 18th 25th, 26th, 27th, 28th, 29th 10th, 11th, 12th, 13th, 21st, 22nd,
    2nd, 3rd, 6th, 7th, 8th, 10th 4th, 5th 21
    2011   3rd, 15th ,
      24th, 28th
    2nd , 6th ,
      8th, 9th, 15th, 29th
    3rd, 4th, 5th,
      17th, 20th, 21st, 24th, 25th, 26th, 27th, 28th
    1st, 2nd, 3rd,
    2010 28th     12th,
      19th, 23rd , 28th
    2009   24th,
      25th, 26th, 27th, 30th
      7th, 11th, 16th
    2008     18th,
      28th, 31st
      2nd, 4th, 5th, 26th
    2007       2nd,
      3rd, 14th, 15th, 16th
    2006 25th 12th,
      15th, 29th, 30th
      2nd, 17th, 19th, 20th, 21st
    24th   12
    2005   21st,
      22nd, 24th, 25th, 26th
    30th 1st,
      2nd, 4th, 10th
      4th, 5th
    2004     15th,
      21st, 22nd
    2003     2nd,
      3rd, 30th
      7th, 23rd, 26th, 27th
    2002   24th,
      10th, 25th
      9th, 31st
    2001   26th 11th,
      4th, 6th, 7th
    14th 8
    2000     17th 1st,
      2nd, 3rd, 4th, 15th, 16th, 23rd, 24th, 25th, 26th
      3rd, 4th, 8th


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