Community air quality monitoring shows periods of ‘unhealthy’ air in Sioux City

By: Cami Koons

Outlets: Iowa Capital Dispatch

Published: August 13, 2026

Words: 1,210

Last Updated: 5 days, 4 hours ago

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In 2025, Iowa Environmental Council worked with Woodbury County residents to install air quality monitors in the county. A year later, air quality data shows the county frequently has acute air pollution events.

The council analyzed data from surrounding polluters and found that fossil fuel combustion from local coal-fired power plants, emissions from local processing facilities and vehicle emissions caused a “concerning pattern of long-term exposure” in the Siouxland region.

Exposure to the …

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