The Environmental Health Division of Lewis and Clark Public Health monitors year-round the fine-particulate air pollution in the Air Pollution Control District
It also enforces local outdoor air-quality regulations that were adopted to protect the health of area residents by controlling emissions of fine particulate pollution, also known as PM2.5
Fine-particulate air pollution includes soot, combustion byproducts, and liquid pollutants in the air.
Exposure to fine particulates can harm human health, especially among individuals with existing lung diseases. Studies have linked fine-particulate pollution to an increase in hospital admissions and emergency room visits.
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Call the Air Quality Hotline at 406-447-1644
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Although the Helena Pollution Control District has live monitoring stations to determine air quality conditions, those conditions can change quickly. Published air-quality reports may not keep up with these changes. Sometimes visibility – how far you can see through the smoke – can be a better way to determine health hazards. See the chart below for a general reference on visibility and air quality.
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Helena, MT 59623
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Outdoor Air Quality
Text of Regulations
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