September traditionally sees a peak in asthma attacks each year, caused by factors like ragweed pollen , mold growth and poor indoor air quality in schools.

Those impacts might be especially pronounced in the most challenging cities to live with asthma in the United States. Right near the top of the list this year is Rochester, rated second to only Detroit.

The rankings are part of a report from Asthma and Allergy Foundation of America, which evaluates the 100 largest metropolitan areas in the contiguous United States. The rankings are based on factors like estimated asthma prevalence, crude death rate for asthma and emergency department visits for asthma.

More than 10% of children living in the city of Rochester suffer from asthma, and those living in the central city have hospita

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