2010 March 4 to 6: MN Twin Cities & Rochester: (Particulate) Air Pollution Advisory: Gorgeous weather, not-so-great air quality for Minnesota

2010 March 4 to 6: MN Twin Cities & Rochester: (Particulate) Air Pollution Advisory: Gorgeous weather, not-so-great air quality for Minnesota

A temperature inversion, which has brought windless, sunny skies to much of the state, has trapped pollutants at ground level.

By BOB VON STERNBERG, Star Tribune

Last update: March 4, 2010 – 11:05 AM

Cruddy air has descended over much of Minnesota.

A temperature inversion, which has brought windless, sunny skies to much of the state, has trapped pollutants at ground level.
That has prompted state officials to issue air quality warnings for the Twin Cities and Rochester.
Air quality in Rochester had deteriorated to the point early Thursday morning that the Pollution Control Agency’s index had climbed to 104, past the point where an alert is called.
According to the agency, pollution levels have the potential of reaching unhealthy levels for sensitive groups, including people with respiratory or cardiovascular problems, children and the elderly, or people who exercise strenuously outdoors.
In the Twin Cities, the air pollution index had reached 81 Thursday morning after rising overnight and was forecast to reach 97 later in the day.
An air pollution advisory remains in effect through Saturday for the metro area, as it does for the Rochester area.
An air quality advisory is based on an air quality index exceeding 90, while an alert is triggered at 101.
Conditions are expected to improve on Sunday, as a weak low-pressure system moves through southern Minnesota, improving the dispersion of particulates that have polluted the air.
More information is available at www.aqi.pca.state.mn.us.
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This entry was posted in M2 States = MI, MN = Michigan, Minnesota. Bookmark the permalink.

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