The Palmer Building

17 External links Sports 8 See also 12.1 1950s Texas drought, 1980s Map of the Colorado & Southern Railroad lines including the Fort Worth and Denver City lines in Texas. . !

. . . . Houston has excessive ozone levels and is routinely ranked among the most ozone-polluted cities in the United States. Ground-level ozone or smog is Houston's predominant air pollution problem with the American Lung Association rating the metropolitan area's ozone level twelfth on the "Most Polluted Cities by Ozone" in 2017 after major cities such as Los Angeles Phoenix New York City and Denver the industries located along the ship channel are a major cause of the city's air pollution the rankings are in terms of peak-based standards focusing strictly on the worst days of the year; the average ozone levels in Houston are lower than what is seen in most other areas of the country as dominant winds ensure clean marine air from the Gulf, Houston City Hall Harris County ESD #50 Dual Channelview FD 1% .05 Texas Consultation and the Matamoros Expedition.