If you live in Dewey County, the air you breathe needs your support.


Particle Pollution 24-hour

Particle Pollution Annual

You can make a difference in the air that you breathe.

Tell your friends about the air where you live.

High Ozone Days
Ozone Grade: A How is my grade calculated?
Weighted Average: 0.0 Change Since 2002:
fewer days this year
Particle Pollution - 24 Hour
Grade: DNC How is my grade calculated?
Weighted Average: DNC No Data
Particle Pollution - Annual
Grade: DNC How is my grade calculated?
Design Value DNC No Data
Groups At Risk
Total Population: 4,810 Risks to the population
Pediatric Asthma: 125 Risks to people with Asthma
Adult Asthma: 345 Risks to people with Asthma
Chronic Bronchitis: 167 Risks to people with Chronic Bronchitis
Emphysema: 88 Risks to people with Emphysema
Cardiovascular Disease: 1,383 Risks to people with Cardiovascular Disease
Diabetes: 443Risks to people with Diabetes
Children Under 18: 1,221 Risks to children and teens
Adults 65 & Over: 958 Risks to older adults
Poverty Estimate: 664Risks to people with low incomes


(1) INC indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis.
(2) DNC indicates that there is no monitor collecting data in the county.

More about Methodology.