Editor's note: This story was updated at 10:40 a.m. to indicate an excessive heat warning was issued.

The forecast is calling for hot, humid weather to continue this week as the Ann Arbor Art Fair ramps into full swing.

The National Weather Service issued an excessive heat warning for Ann Arbor and much of southeast Michigan through 8 p.m. Friday. Ann Arbor has been under a heat advisory since noon Tuesday -- which will make for 3.5 consecutive days of 90-degree temperatures.

Here are five ways to stay as cool as possible while touring the Ann Arbor Art Fair:

1. Hop on the trolley

If you want to see the whole art fair but don't want to hike during the heat, rides are $1 per person per day on the air-conditioned A2 Art Trolleys.

Take a seat and enjoy gawking at the art and sweaty people on the sidewalk that weren't as clever as you. The trolleys travel a loop route between all four fairs and stop eight times and run from 9 a.m. to 10 p.m.

2. Chill out under a misting station

A special misting station has been set up at the corner of South University Avenue and State Street.

Sponsored by Kalahari Resorts and Convention Centers in Sandusky, the misting station is in a tent most easily identified by large translucent panels with scenes of Africa.

3. Take air conditioning breaks

Whether it’s a restaurant, shop or a public building, take care to cool down in an air-conditioned building throughout the day to reduce your body temperature.

The longer you go without cooling down, the more at risk your body becomes to succumbing to heat-related illnesses, according to health officials.

Washtenaw County Public Health announced a list of organizations that are specifically opening their doors as cooling locations to the public.

4. Hunt down a fire hydrant drinking fountain

Staying hydrated is key to surviving the heat, as persistent dehydration can lead to heat-related illnesses such as heat exhaustion and heat stroke.

The City of Ann Arbor has set up a number of drinking fountains at fire hydrants throughout the art fair in an annual program for people to fill up their water bottles or to get a drink. Locations include:

• South University and East University
• S. State and South University
• North University near Ingalls Mall
• E. Liberty and Maynard
• S. Main at E. Liberty

5. Get off the street

If you can’t find an air-conditioned spot, find a shady tree to sit underneath. Wander away from the art fair's asphalt streets -- which radiate heat -- to a grassy area on your way between booths.

Trees and benches on the University of Michigan campus offer a nice respite as you make the trek from the State Street area to the South University fair.

Bonus: Observe from afar

Check out AnnArbor.com's time lapse video of the art fair and our live stream of activity on East Liberty Street online.

Amy Biolchini covers Washtenaw County, health and environmental issues for AnnArbor.com. Reach her at (734) 623-2552, amybiolchini@annarbor.com or on Twitter.