Arctic air arrives in Massachusetts. Maps show how cold it will get in Boston area.

The National Weather Service has issued a Cold Weather Advisory for most of Massachusetts through 11 a.m. Friday.

Air temperatures Friday morning will largely be near or below zero across the region.

There will be very little recovery during the day on Friday. Daytime highs will be stuck in the teens.

Temperatures bottom out Friday night into early Saturday, dipping well below zero in most area north and west of Boston.

Below zero with wind chill

Add in the wind and it only gets worse.

Check out the forecast for wind chills Friday and Saturday morning. It includes  -20 to -10 degrees across the entire area.

Readings this low lead to frostbite on any exposed skin in 30 minutes or less.

Safe to say, you should not be outside for any extended period of time over the next two days. If you have to, cover up all exposed skin and dress in multiple layers.