Map of the current ozone levels for the area; from the Texas Natural Resource Conservation Commission.
Links:
[1] http://hcpl.net/users/admin
[2] http://www.tceq.state.tx.us/cgi-bin/compliance/monops/select_curlev.pl?region12_cur.gif
[3] http://hcpl.net/category/web-links/science-and-technology/general