Particle Pollution - 24 Hour Learn More Grade: F How is my grade calculated? Weighted Average: 3.5 Change Since 2000:
3.7
3.5
fewer days this year
Particle Pollution - Annual Learn More Grade: Pass How is my grade calculated? Design Value 8.3 Change Since 2000:
8.6
8.3
µg/m3
Groups At Risk Learn More Total Population: 65,338 Risks to the population Pediatric Asthma: 1,178 Risks to people with Asthma Adult Asthma: 4,414 Risks to people with Asthma COPD: 3,284 Risks to people with COPD Cardiovascular Disease: 4,369 Risks to people with Cardiovascular Disease Diabetes: 3,913Risks to people with Diabetes Children Under 18: 14,323 Risks to children and teens Adults 65 & Over: 10,136 Risks to older adults Poverty Estimate: 8,026Risks to people with low incomes

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High Ozone Days Learn More
Change Since

This County:

Lewis and Clark, MT

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

ABCDFDNCINC
Particle Pollution - 24 Hour Learn More
Change Since

This County:

Lewis and Clark, MT

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

ABCDFDNCINC
Particle Pollution - Annual Learn More
Change Since

This County:

Lewis and Clark, MT

Other counties with monitors in this metropolitan area

There are no other counties in this metropolitan area

PASSFAILDNCINC
Groups At Risk
Total Population: Risks to the population
Pediatric Asthma: Risks to people with Asthma
Adult Asthma: Risks to people with Asthma
COPD: Risks to people with COPD
Cardiovascular Disease: Risks to people with Cardiovascular Disease
Diabetes: Risks to people with Diabetes
Children Under 18: Risks to children and teens
Adults 65 & Over: Risks to older adults
Poverty Estimate: Risks to people with low incomes

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