If you live in Ravalli County, the air you breathe may put your health at risk.


Particle Pollution 24-hour

Particle Pollution Annual

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High Ozone Days
Ozone Grade: DNC How is my grade calculated?
Weighted Average: DNC No Data
Particle Pollution - 24 Hour
Grade: F How is my grade calculated?
Weighted Average: 3.3 Change Since 2000:
fewer days this year
Particle Pollution - Annual
Grade: Pass How is my grade calculated?
Design Value 7.9 Change Since 2000:
Groups At Risk
Total Population: 40,212 Risks to the population
Pediatric Asthma: 608 Risks to people with Asthma
Adult Asthma: 2,856 Risks to people with Asthma
Chronic Bronchitis: 1,476 Risks to people with Chronic Bronchitis
Emphysema: 760 Risks to people with Emphysema
Cardiovascular Disease: 12,156 Risks to people with Cardiovascular Disease
Diabetes: 2,526Risks to people with Diabetes
Children Under 18: 8,824 Risks to children and teens
Adults 65 & Over: 7,728 Risks to older adults
Poverty Estimate: 6,992Risks 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.