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http://www.census.gov/ Explore a full range of popular and obscure current and historical Census data on a variety of subjects.
Weather & Time
The Illinois State Climatologist Office
http://www.sws.uiuc.edu/atmos/statecli/ The Office is housed and supported by the Illinois State Water Survey on the campus of the University of Illinois in Champaign.
http://www.time.gov A service provided by the two time agencies of United States: a Department of Commerce agency, the National Institute of Standards and Technology (NIST), and its military counterpart, the U. S. Naval Observatory (USNO).