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Air Trends

Air Quality Index Information

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Data Available through 2010 Status and Trends

  • Number of Days with Air Quality Index Values Greater than 100 at Trends Sites, 2000-2010, and All Sites in 2010, Ozone Only
    (PDF) (2pp, 114k)
    (Excel spreadsheet) (19k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trends Sites, 2000-2010, and All Sites in 2010
    (PDF) (2pp, 116k)
    (Excel spreadsheet) (20k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2010, and All Sites in 2010, Ozone Only
    (PDF) (2pp, 174k)
    (Excel spreadsheet) (22k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2010, and All Sites in 2010
    (PDF) (2pp, 177k)
    (Excel spreadsheet) (23k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1999-2010, and All Sites in 2010, PM2.5 Only
    (PDF) (2pp, 112k)
    (Excel spreadsheet) (18k)

Data Available through 2009 Status and Trends

  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2009, and All Sites in 2009, Ozone Only
    (PDF) (2pp, 21k)
    (Excel spreadsheet) (33k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2009, and All Sites in 2009
    (PDF) (2pp, 21k)
    (Excel spreadsheet) (35k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1999-2009, and All Sites in 2009, PM2.5 Only
    (PDF) (3pp, 16k)
    (Excel spreadsheet) (28k)

Data Available through 2008 Status and Trends

  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2008, and All Sites in 2008, Ozone Only
    (PDF) (2pp, 21k)
    (Excel spreadsheet) (33k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2008, and All Sites in 2008
    (PDF) (2pp, 21k)
    (Excel spreadsheet) (35k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1999-2008, and All Sites in 2008, PM2.5 Only
    (PDF) (3pp, 16k)
    (Excel spreadsheet) (28k)

Data Available through 2007 Status and Trends

  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2007, and All Sites in 2007, Ozone Only
    (PDF) (3pp, 170k)
    (Excel spreadsheet) (143k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2007, and All Sites in 2007
    (PDF) (3pp, 180k)
    (Excel spreadsheet) (136k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1999-2007, and All Sites in 2007, PM2.5 Only
    (PDF) (2pp, 104k)
    (Excel spreadsheet) (31k)

Data Available through 2006 Status and Trends

  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2006, and All Sites in 2006, Ozone Only
    (PDF) (3pp, 15k)
    (Excel spreadsheet) (36k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1990-2006, and All Sites in 2006
    (PDF) (3pp, 16k)
    (Excel spreadsheet) (34k)
  • Number of Days with Air Quality Index Values Greater than 100 at Trend Sites, 1999-2006, and All Sites in 2006, PM2.5 Only
    (PDF) (2pp, 11k)
    (Excel spreadsheet) (26k)

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