Fine particles could affect those with asthma or other breathing conditions as well as children and older adults, according to the MPCA. Stagnant weather conditions have resulted in poor dispersion of those particles and air pollutants have become trapped closer to the ground in the affected areas.

Air quality where you live

The MCPA reports the alert will last until 6 p.m. Thursday.

The MPCA advises limiting outdoor physical activity, making sure those with breathing conditions have the medications they need on hand, and reducing vehicle trips to lessen fine particle pollution.