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Maricopa and Pinal counties both failed to meet federal air quality standards and will now become part of an Arizona State ...

The high in Phoenix on Jan. 1 was 71°F. An Air Quality Alert is in effect for the ... storm system runs along the West Coast and north of Arizona. This system will help our high temperatures ...

PHOENIX (AZFamily ... high of 77. Air quality has improved for Friday, as well. Friday will be a dry day statewide, with a few additional breezes in northern Arizona. The wind will pick ...

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

And the effects of air pollution are not so easy to escape, particularly in a state with some of the worst air pollution in the country. Arizona is the only state with an air quality index that ...