The National Weather Service (NWS) has issued a heat advisory for South Florida, affecting Miami-Dade, Broward, and Palm Beach counties. This alert is in effect from 11 a.m. to 7 p.m. Eastern Time on Monday.
Afternoon temperatures are expected to peak in the mid-90s°F, but the heat index — which combines temperature and humidity — could soar to between 105 and 112°F throughout the region.
CBS News Miami meteorologist Lissette Gonzalez has warned that temperatures might approach or exceed the daily record of 95°F in Miami, stating, "The heat is going to be significant. We might break the record."
The Ongoing Heat Wave
This event is part of an ongoing heat wave that has been impacting South Florida since early August. Last Thursday, Miami broke a long-standing daily high temperature record from 1909 by reaching 96°F (35.5°C). The NWS has been issuing heat advisories almost continuously for Miami-Dade and Broward this month.
Impact of Saharan Dust
Adding to the extreme conditions is a plume of Saharan dust that intensifies the heat, creates a hazy and dry atmosphere, and eliminates the chance of afternoon showers that typically bring relief. According to the National Oceanic and Atmospheric Administration (NOAA), this Saharan dust layer peaks in activity between late June and mid-August and can irritate eyes, nose, and throat, making it crucial for individuals with asthma or other respiratory issues to take precautions.
The NWS cautions that the extreme heat index "can cause heat-related illnesses" and advises, "Drink plenty of fluids, stay in air-conditioned rooms, avoid sun exposure, and check on family and neighbors."
Vulnerable Populations and Safety Precautions
Those most at risk under these conditions include seniors over 65, young children, individuals with chronic illnesses, outdoor workers and athletes, homeless individuals or those without air conditioning access, pregnant women, and pets. Authorities in Miami-Dade emphasize that infants, children, and animals should never be left in parked vehicles, even with windows slightly open.
Anyone experiencing symptoms of heat exhaustion — such as elevated body temperature, dizziness, nausea, or confusion — should seek medical attention immediately. Residents of Miami-Dade can sign up for alerts by texting "Alert Miami" to 888777.
Extreme heat is historically the leading cause of weather-related deaths in the United States, with estimates of over 2,000 fatalities annually nationwide, according to the Centers for Disease Control and Prevention (CDC) and NOAA.
Tuesday, when Florida holds its state primaries with voting hours from 7 a.m. to 7 p.m., is expected to be even hotter, with a predicted high of 96°F and another likely heat advisory, adding an extra concern for voters heading to the polls.
Frequently Asked Questions About Extreme Heat in South Florida
What measures should be taken during a heat advisory?
During a heat advisory, it's important to stay hydrated, remain in cool, air-conditioned environments, avoid direct sunlight, and check on vulnerable family members and neighbors.
Who is most at risk during extreme heat events?
Those most at risk include the elderly, young children, individuals with chronic health conditions, outdoor workers, athletes, the homeless, pregnant women, and pets.
How does Saharan dust affect the weather?
Saharan dust can increase heat, create a hazy and dry atmosphere, and reduce the likelihood of rain, potentially irritating eyes, nose, and throat.