Update: Air Pollution Advisory Cancelled in Twin Cities

Update, 12:35 p.m. – The Minnesota Pollution Control Agency (MPCA) is cancelling the Air Quality Advisory Tuesday as air quality has improved across the Twin Cities metro. Overnight snowfall has reduced fine particle levels, allowing the AQI to fall into the low yellow (moderate) category.

While higher AQI values remain possible over central Minnesota, improving air quality is expected statewide Tuesday afternoon.

10:00 a.m. – The MPCA is issuing an air pollution advisory for the Twin Cities metro, effective Monday, Jan. 16 from 3 p.m. through 12 a.m., Wednesday, Jan. 18. The affected area includes the entire Twin Cities metro.

Fine particulate pollution has increased across the Metro Tuesday due to "stagnant conditions," according to state officials. Wind speeds are not expected to increase until late Tuesday night, so advisory conditions are expected to continue until then. This means air quality index (AQI) values will remain in the high yellow (moderate category) through Tuesday.

At-risk populations

Fine particle pollution is expected to be near a level considered unhealthy for sensitive groups. Populations sensitive to fine particles include those with preexisting cardiovascular or respiratory disease, the elderly, children, and individuals who participate in activities requiring extended or heavy exertion, both indoors and outdoors, according to health officials.

Members of these groups are encouraged to postpone or reduce vigorous activity and minimize exposure to local sources of air pollution (i.e., heavy duty vehicle traffic, and wood fires), according to a news release. Even individuals who are otherwise healthy may experience health effects when pollution levels increase.

Health impacts

Exposure to high levels of fine particles has been linked with both respiratory and cardiovascular health effects. Fine particles may exacerbate pre-existing health conditions and may cause some people to experience chest pain, shortness of breath, wheezing, coughing or fatigue, according to the MPCA.

If you experience these symptoms, contact your physician.

Pollution reduction tips

Fine particles are produced from combustion activities, which include fossil fuel-based energy generation, motor vehicle exhaust, gasoline-powered yard and lawn equipment, and wood burning. Conserving energy; buying clean, renewable power; and using alternative means of transportation, such as mass transit, will all reduce your daily contribution to air pollution.

During air quality alerts, residents are particularly encouraged to use public transportation, car pool or reduce vehicle trips and engine idling. Postpone the use of gasoline-powered equipment and avoid burning wood.

Image via Minnesota Pollution Control Agency