Worst County for Fall Allergies in Every State

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Source: Public Domain / Wikimedia Commons

1. Alabama: Mobile County
> County seat: Mobile
> Est. adults with asthma: 31,175
> Average fine particle concentration: 10.8 µg/m3 (42nd of 67 AL counties)
> Population living in urban area: 80.0% (4th of 67 AL counties)

Source: Zeb Micelli / Wikimedia Commons

2. Arizona: Maricopa County
> County seat: Phoenix
> Est. adults with asthma: 285,010
> Average fine particle concentration: 10.6 µg/m3 (2nd of 15 AZ counties)
> Population living in urban area: 97.6% (1st of 15 AZ counties)

Source: 76074333@N00 / Flickr

3. Arkansas: Crittenden County
> County seat: Marion
> Est. adults with asthma: 3,598
> Average fine particle concentration: 10.1 µg/m3 (26th of 75 AR counties)
> Population living in urban area: 79.1% (3rd of 75 AR counties)

Source: patrick_nouhailler / Flickr

4. California: Riverside County
> County seat: Riverside
> Est. adults with asthma: 131,697
> Average fine particle concentration: 14.8 µg/m3 (6th of 58 CA counties)
> Population living in urban area: 95.4% (12th of 58 CA counties)

Source: Yassie / Wikimedia Commons

5. Colorado: Jefferson County
> County seat: Golden
> Est. adults with asthma: 39,791
> Average fine particle concentration: 8.4 µg/m3 (4th of 64 CO counties)
> Population living in urban area: 93.1% (5th of 64 CO counties)