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Air quality map of current conditions in Minnesota.

MPCA established a network of long-term biological monitoring stations that represent a variety of stream types in their most natural condition.

The AQI was developed to provide a simple, uniform way to report daily air quality conditions.

State agencies, counties, municipalities, nonprofit organizations, and many others are engaged in protecting Minnesota lakes.

Conditionally exempt facilities do not need an air quality permit if they follow specific requirements.

Waterways in the northeastern part of the state are generally in better condition than those in the southern, central, and western regions.

Nearly nine in 10 Minnesota communities have reported experiencing the impact of at least one weather trend caused by climate change, and few cities have defined plans to address it.

Businesses face challenges from climate change's impacts, but they can also take steps to reduce their contributions to climate change.

In 2023, Minnesota saw more air quality alerts covering more days than ever before. Smoke from Canadian wildfires throughout the summer caused many of the alerts, though climate change is playing a growing role in Minnesota's air quality.

The frequent wildfires in California and elsewhere, brought on by climate change, are affecting air quality for thousands of miles. That includes Minnesota.

The MPCA will analyze varying background sulfate levels across Minnesota, which could inform our implementation of the wild rice sulfate water quality standard.

Air pollution levels in Minnesota have steadily decreased over the past few decades and currently meet federal standards. But even levels that meet or are below these standards can affect people’s…

PolyMet Mining plans to develop a mine and processing plant to extract copper, nickel, and precious metals.

Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.

The MPCA is committed to engaging broadly with the public and ensuring that residents affected by its decisions have a voice in its processes.

Minnesota is a national leader in ensuring healthy air quality. The Clean Air Act requires states to take significant responsibility for preventing and controlling air pollution. States must pass…

Air quality dispersion modeling uses a computer model to estimate air pollution concentrations from regulated facilities and other sources of pollution.

During the 2023 legislative session, Minnesota invested over $100 million to fund grant programs that support investment in climate resilience. Each initiative supports MPCA’s implementation of Minnesota’s Climate Action Framework.

The Air We Breathe report looks at public health and air quality data to gauge how air pollution is affecting our health in Minnesota.

Minnesota GreenCorps members serving with the City of Minneapolis developed a mini-course for residents about responsible use of deicing salt.