A cold weather advisory (formerly known as a wind chill advisory until October 2024) is a hazardous weather statement issued by Weather Forecast Offices (WFO) of the National Weather Service (NWS) in the United States to alert the public that temperatures or wind chills are forecast to reach values low enough that it poses a threat to human health and life if adequate protection is not taken against hypothermia and frostbite. The exact criteria meriting the issuance of an advisory vary from state to state, and areas prone to colder temperatures will often require colder temperatures/wind chills before issuing an advisory.

The following is an example of the now deprecated Wind Chill Advisory; this one was issued by the National Weather Service office in Detroit, Michigan on January 21, 2011.

The following is the first Cold Weather Advisory issued by the National Weather Service. It was issued on November 17, 2024.