Uploaded August 2026 | Updated September 2026, 3 weeks ago

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Federal meteorologists were baffled five years ago when a cold front failed to push wildfire smoke out of Utah as expected, instead creating a smoky rain that fell across much of northern Utah.

Air quality reached unhealthy levels at times, especially along the Wasatch Front and in northern Utah, as the storm moved through. But what happens when rain mixes with wildfire smoke?

According to a new University of Utah-led study, these events can deposit large amounts of nitrogen, phosphorus and potassium on the ground, potentially fertilizing land and aquatic ecosystems.
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