Houston Air Quality Improving, But Still Dirty
![](https://stateimpact.npr.org/texas/files/2012/04/Screen-Shot-2012-04-25-at-11.58.25-AM-100x100.png)
The winds of change are cleaner than usual in Texas’ biggest metropolitan area. According to the American Lung Association’s annual State of the Air 2012 report, Houston’s air quality index has improved slightly from last year, marking the best levels ever recorded in the city since the association first began following them thirteen years ago. The association […]