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Volatile organic compounds (VOCs) are a group of chemicals that can vaporize into air. VOCs are in thousands of daily use products, including paint, varnish, wax, and various cleaning, degreasing,…
Ready-to-run meteorological data suitable for AERMOD.
Data shows that ice cover on Minnesota's lakes doesn't last as long as it used to. That means a shorter ice fishing season, yes, but it also has implications for the environment and Minnesota's fish and wildlife.
Carbon monoxide (CO) is a product of the incomplete combustion of carbon-based fuels—including gasoline, diesel fuel, crude oil, and wood—and other natural and synthetic products. Breathing in…
Nitrogen dioxide (NO2) is one of a group of highly reactive gases known as nitrogen oxides. NO2 reacts with other chemicals in the air to form other pollutants, such as ozone, particulate matter,…
Sulfur dioxide (SO2), a foul-smelling toxic gas, is part of a larger group of chemicals called sulfur oxides. These gases, especially SO2, are emitted by the burning of fossil fuels or other…
Mercury is a naturally occurring element that is toxic to humans and animals. At room temperature, mercury is a silvery, liquid metal, but it can also evaporate and become airborne. Mercury does not…
An air emissions risk analysis estimates the potential human health risks from air pollution emitted by a facility.
Air quality dispersion modeling uses a computer model to estimate air pollution concentrations from regulated facilities and other sources of pollution.
This feature summarizes findings from four WRAPS reports in 2024: Root River, Mississippi River-St. Cloud, Pomme de Terre River, and Mississippi River-Lake Pepin Tributaries.
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.
MPCA’s community air monitoring pilot grant program will provide $4.85 million to build more networks of community air sensors in the Twin Cities metro area.
Particulate matter (PM) refers to various air particles, including dust, soot, smoke, and liquid droplets that range in size from less than 0.1 microns in diameter (smaller than a single bacterium)…
Ground-level ozone is a secondary pollutant formed through chemical reactions between nitrogen oxides (NOx) and volatile organic compounds (VOCs). Ozone can irritate the eyes, nose and throat,…
Minnesota passed a law in 2023 that restricts the use of lead and cadmium in 15 categories of consumer products, including toys and school supplies.
Pollinators are essential to everyday Minnesotans, our economy, and our food production. Learn why these pollinators are so vital through exhibits at this year’s Eco Experience.
When temperatures climb and the summer sun beats down, conditions are ripe for Minnesota lakes to produce harmful algae blooms, some of which can be harmful to pets and humans.
Status of total maximum daily load (TMDL) projects in Minnesota.
The Root River starts as a drainage ditch in Mower County, then winds 81 miles from intensely farmed areas through more wooded, rolling terrain, and finally empties into the Mississippi River south of La Crosse, Wisconsin.
Frequently asked questions about SSTS certification and licensing.