Ozone Exceedances (8 hr. standard) 1999-Present
Station 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009  
Central
(monitor 1127)
Aug 3
(.090)

Aug 17
(.093)

Aug 18
(.088)

Aug 23
(.086)

Aug 29
(.087)

Aug 30
(.090)
Sept 2
(.091)

Sept 3
(.094)

Sept 19
(.085)
Aug 4
(.086)

Aug 7
(.085)
Aug 8
(.087)

Aug 9
(.094)

July 21
(.094)

Aug 24
(.085)
None Sept 1
(.091)
Jul 18
(.086)

Jul 20
(.106)
  Sept 28
(.077)
Jun 24
(.094)

Jun 26
(.078)

Jul 2
(.078)
North
(monitor 137)
July 13
(.086)

Aug 6
(.086)

Aug 16
(.087)

Aug 17
(.093)

Aug 21
(.087)

Aug 23
(.098)

Aug 28
(.087)

Aug 29
(.085)

Aug 30
(.093)

Aug 31
(.091)
July 14
(.097)

Aug 2

Aug 15

Aug 23

Sept 1

Sept 2
(.106)

Sept 3
(.097)

Sept 13
(.096)

Sept 19
July 27
(.086)

Aug 7
(.086)
Aug 8
(.086)

Aug 9
(.099)
April 12
(.089)

July 21
(.094)

Aug 25
(.085)
None Jun 22
(.087)

Aug 8
(.090)

Sep 2
(.087)

June 30
(.087)

July 18
(.094)

Jul 20
(.095)

  July 23
(.085)

July 28
(.079)

July 31
(.078)

Aug 4
(.087)

Aug 5
(.100)

Apr 22
(.077)

Jun 24
(.077)

South
(monitor 174)
Aug 10
(.103)

Aug 18
(.088)

Aug 25
(.098)
July 19
(.097)

Sept 3
(.123)

Sept 19
(.088)
Aug 4
(.085)
July 23
(.088)

July 24
(.088)

Sept 10
(.095)
April 12
(.085)

June 19
(.091)

July 29
(.088)

Aug 22
(.087)

Aug 23
(.086)
None July 29
(.085)
Aug 4
(.093)

Aug 19
(0.107)

Sep. 30
(0.087)
Aug 13
(0.092)
   Jul 1
(.075)
West
(monitor 144)
N.A. N.A. N.A. N.A. Aug 22
(.090)
None July 29
(.096)

Sept 1
(.086
Jun 8
(.086)

Aug 19
(.085)

Aug 23
(.085)

Sept 15
(.085)

    Jun 24
(.083)

Aug 12
(.081)

East
(monitor 178)
N.A. N.A. Aug 4
(.088)
Sept 10
(.086)
April 12
(.089)

May 30
(.089)

Aug 22
(.089)
None Jun 21
(.092)
Jul 20
(.112)

Aug 4
(.091)

Aug 19
(0.099)
Aug 13
(0.094)

Aug 14
(0.095)

Jul 3
(.080)

Jun 26
(.083 )

Jul 15
(.083)

Keystone N.A. N.A. July 25
(.085)

July 26
(.110)

Aug 4
(.103)

Aug 5
(.085)

Sept 13
(.097)
Aug 6
(.088)

Aug 8
(.092)

Sept 10
(.091)
N.A. None          


Ozone Alerts Exceedances of the 8hr standard Exceedances of the 1hr standard Highest 8hr Avg. 4th Highest 8hr Avg.
1991-Present 1999-Present 1991-Present 1999-Present 1994-Present
DEQ Ozone Monitoring Data
Current Ozone Readings This Month's 8hr Avg Readings Last Month's 8hr Avg Readings This Month's 1hr. Avg Readings  Last Month's 1hr Avg Readings