Weather Forecast


Colorado smoke to lower air quality in Minnesota

MINNEAPOLIS -- The Minnesota Pollution Control Agency has issued an air pollution health advisory due to forecasted increases in ozone pollution from noon to midnight today for the Twin Cities metropolitan area and Rochester.

Ozone is expected to near a level that is considered unhealthy for sensitive groups. Those sensitive to ozone include people with preexisting respiratory conditions, the elderly, children, and individuals who participate in outdoor activities requiring extended or heavy exertion. These individuals are encouraged to postpone or reduce vigorous outdoor activity, or schedule outdoor activity in the morning, when ozone levels are lower. Even persons who are otherwise healthy may experience health effects when ozone levels increase.

Elevated levels of ozone have been linked with respiratory health effects. Exposure to high levels of ozone may exacerbate preexisting health conditions. High ozone levels may make it more difficult to breathe deeply and vigorously, cause shortness of breath and breathing discomfort, and result in coughing and a sore or scratchy throat. If you experience these symptoms, contact your physician.

Ozone is produced on hot, sunny days by a chemical reaction between volatile organic compounds and oxides of nitrogen. These pollutants are released from motor vehicles, lawn and garden equipment, paints and solvents, refueling stations and other activities that require fuel combustion. During air quality advisories, residents are particularly encouraged to postpone or reduce vehicle trips; engine idling and refueling; the use of gasoline-powered equipment; working with paints and solvents; and burning wood.

The forecast for today calls for temperatures in the low 90s, clear sunny skies and a light west-southwesterly winds carrying wildfire smoke are expected to promote the creation of ozone. As a result, the Air Quality Index (AQI) is forecasted to reach 97 AQI in the Twin Cities and Rochester, which is just below air quality conditions considered unhealthy for sensitive groups.