Minnesota Pollution Control Agency

The fatal crash remains under investigation.

The parent company also paid a $1.25 million civil fine.

Minnesota usually sees only two to three of these warnings each year, but we've now experienced 25 of them this year-- and it's only mid-July.

The Minnesota Pollution Control Agency has now issued a red air-quality alert for much of southern and eastern Minnesota.

It has also made "several corrective actions."

Conditions may improve today but return for the weekend.

The Minnesota Pollution Control Agency has issued an air quality alert that covers most of the state.

It's not just from fireworks!