Weather

The process of changing leaf colors is often referred to as “fall foliage.” But what exactly happens scientifically to cause this change?

NBC 5 Storm Team Meteorologist Pete Sack has the latest on an upcoming warmup.

After a string of warmer winters, this season is expected to bring colder and wetter conditions, particularly for the Great Lakes region. NBC Chicago meteorologist Kevin Jeanes gives us the details.

“Tiny” Oscar intensified into a hurricane Saturday, the National Hurricane Center said, with maximum sustained winds of 80 mph.

El Niño and La Niña are climate phenomena that impacts weather across the U.S. and the world.

Updates to weather in the NBC 5 Chicago app include improved radar layer control, location experience, alerts and customization. Download today!

Here are some ways to keep safe when there is lightning in the area.

Former Leicester City right-back Danny Simpson and mascot Filbert Fox took on the challenge of presenting Chicago’s weather, switching between Celsius and Fahrenheit. The duo is in town to meet fans and celebrate Premier League excitement in the Windy City.

“The Old Farmer’s Almanac” forecasts a calmer, gentler winter in 2024.

Forecasters warned that hurricane-force winds and a dangerous storm surge would begin to be felt in Louisiana on Wednesday ahead of a likely afternoon or evening landfall.

Topical Storm Francine was named in the Gulf of Mexico on Monday and a hurricane watch was issued in parts of Louisiana.

The beginning of the autumnal equinox is upon us. Here’s the day it falls on in 2024 and what it actually means.

Chicagoans encountered nearly unbearable conditions on Monday as an excessive heat warning remained in effect. NBC Chicago’s Natalie Martinez talked to those trying to get some relief.

The Illinois Environmental Protection Agency also declared Monday an Air Pollution Action Day as the result of widespread ozone and/or particulate levels at or above the category of “unhealthy for sensitive groups.”

The National Weather Service extended an air quality alert for several Chicago-area counties as heat and humidity continued to build on Sunday, ahead of potential 110 heat index values. In a notice on Sunday, the NWS stated an air quality alert was set to take effect at midnight Sunday and continue through midnight on Monday. One day earlier, an alert…

NBC 5 Storm Team Meteorologist Kevin Jeanes shares what to expect for Sunday and beyond.

A rare type of ice can be hazardous if it infiltrates a plane’s engine at high altitudes. Here’s what you need to know.

Another bright and sunny day is in store for Chicago as the weekend wraps on Sunday. Temps should be a little warmer than they were on Saturday, as it will be mostly sunny with highs near 80 degrees. There will be a northwest wind of about 10-15 mph, which could cool things off a bit for those outside. Tonight that…

Kevin Jeanes has the latest forecast update for the Chicago area.