CONCORD, N.H. — Officials say the high temperatures and light winds are expected to bring air pollution into Maine and New Hampshire that could be unhealthy for some people.

In Maine, concentrations of ground-level ozone are expected to rise Friday along the midcoast and Down East coastal regions and spread to include the southwest coast on Saturday.

The New Hampshire Department of Environmental Service says air pollution concentrations are expected to rise in coastal Rockingham County and at elevations above 3,000 feet on Friday. The air pollution will spread over a greater region on Saturday, including Hillsborough and Merrimack counties.

Officials say sensitive individuals such as children and older adults and anyone with respiratory disease and people who are active outdoors are advised to limit strenuous outdoor activities.