A new report from the American Lung Association shows that Phoenix's ozone problem is worsening, while its particulate ...

The AirNow interactive map shows parts of Arizona edging into the "purple" category of air quality, indicating very unhealthy conditions. Localized spikes in PM10, which are inhalable particles ...

There are also maps showing air quality, power outages and snow and ice. Weather in Arizona: All the latest news for Phoenix ...