Leading air quality experts are expected to gather in Phoenix to "address rising ground-level ozone concentrations in ...

Arizona is the only state with 'unhealthy' air quality. Part of it stems from our geography, but part also comes from our ...

The Center for Biological Diversity and the Patagonia Area Resource Alliance say federal regulators failed to review a ...

Air quality worsened during the holiday season ... dust and other pollutants as if it were a lid. Phoenix, which is surrounded by mountains and areas with dusty, dry surfaces, faces a particularly ...