Grand Rapids, MI Severe Weather Alertstar_ratehome

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT SUNDAY...

* WHAT...Heat index values up to 103 expected.

* WHERE...Portions of central, south central, southwest, and west
central Michigan.

* WHEN...Until 8 PM EDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

* ADDITIONAL DETAILS...Heat index values will rise to near and
slightly above the 100 degree mark today and Sunday. Little relief
will occur tonight as lows will only fall into the middle to upper
70s.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

The Michigan Department of Environment, Great Lakes, and Energy (EGLE)
has declared an Air Quality Advisory for June 21 and June 22, 2025,
for elevated levels of ozone in western counties of Michigan.
Pollutants within those areas are expected to be in the Unhealthy for
Sensitive Groups (USG, Orange AQI) range.

The Air Quality Advisory for Saturday and Sunday is in effect for
the following Michigan counties:

Allegan, Kent, Muskegon, Ottawa, and Van Buren

We are in the peak of ozone season, and the current forecast shows
ozone-conducive conditions for Saturday and Sunday. Surface temperatures
in the 90s, coupled with ample sunlight and southwest winds, create
an environment favorable for ozone development along the Lake
Michigan shoreline.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with respiratory diseases such as asthma.

People and businesses are urged to avoid activities which can lead to zone
formation. These activities include:

refueling vehicles or topping off when refueling;
using gasoline powered lawn equipment;
using charcoal lighter fluid.

Positive activities include:

driving less;
telecommuting;
walking or bike riding;
delaying or combining errands;
using water-based paints.