NEW ORLEANS (WVUE) – Louisiana’s summer heat is becoming harder to ignore, with rising temperatures, higher humidity and thousands of heat-related emergency room visits in recent years.
Across all 64 parishes, average summer temperatures have risen since 1970, according to Climate Central, a nonprofit research group.
In 2023, Louisiana reported a record-breaking 88 heat-related deaths, according to the Louisiana Department of Health. More than 6,100 people went to emergency rooms that year because of heat-related symptoms.
Tony Coker felt how quickly that heat can become dangerous while working his landscaping job last week.
Coker was among a crew cutting grass near LSU’s School of Public Health in New Orleans. He said the heat forced him to stop working.
“I got to a point, I was like, ‘OK guys, you’re going to have to finish. I’m done. My stomach is hurting. I’m sitting down for a minute and I’m going to go home,’” Coker said.
During Louisiana’s often-brutal summers, Coker takes steps to protect himself while working his landscaping job.
“I got this hat on. It’s a little hotter with long sleeves, but it keeps the sun off the body. I wear sunscreen to make sure to get as much protection as possible, you know 100 SPF,” Coker said.
Heat safety
Heat illness in Louisiana
Heat-related illness has sent thousands of people to emergency rooms in Louisiana in recent years.
Heat-related deaths
- 2023: 88 deaths
- 2024: 53 deaths
- 2025: 31 deaths
Emergency room visits
- 2023: 6,187 visits
- 2024: 4,471 visits
- 2025: 4,194 visits
- 2026: 935 visits as of June 30
Signs of heat illness
- Heavy sweating
- Weakness or dizziness
- Nausea
- Headache
- Muscle cramps
- Confusion
- Fainting
How to stay safe
- Drink water before you feel thirsty
- Take breaks in shade or air conditioning
- Wear lightweight, loose-fitting clothing
- Limit strenuous activity during the hottest part of the day
- Check on older adults, children and people without reliable air conditioning
Call 911 if someone is confused, faints, stops sweating or shows signs of heat stroke.
Source: Louisiana Department of Health
According to Climate Central, a nonprofit research group, the average annual temperature in New Orleans has risen by 4.5 degrees since 1970.
The group’s newest summer analysis shows the warming is not limited to New Orleans. Among Louisiana cities analyzed, Shreveport has seen the largest increase in average summer temperatures since 1970, at 4.3 degrees, followed by New Orleans at 4.1 degrees. New Orleans, however, saw the largest increase in hotter-than-normal summer days, with 53 more days above normal than in the early 1970s.
Climate Central’s parish-level data shows average summer temperature increases ranging from 1.4 degrees in Avoyelles and Evangeline parishes to 3.1 degrees in Bienville, Bossier, Caddo, Sabine and Terrebonne parishes.
In Orleans Parish, average summer temperatures have risen by 2.5 degrees since 1970, according to Climate Central’s parish-level data.
“It was relatively cool in the 1950s, 1960s, 1970s and then we went on this rapid warming trend, mimicking what’s going on across the globe, and it’s been very hot,” said Dr. Barry Keim, professor and program director of environmental health, climate and sustainability at LSU Health Sciences Center New Orleans.
Keim, a climatologist, said Louisiana’s humidity makes the heat feel even worse. He said humidity levels have also risen since the 1970s.
“Bottom line is, not only are the temperatures getting warmer, the humidity is going up, and then when you put the two together it just makes it feel horrible out here,” Keim said.
As the Fourth of July approaches, Keim said there will not be much relief in the form of rain. Louisiana is expected to stay hot and humid.
Forecasts show highs mainly in the low to mid-90s across Louisiana on Independence Day, with heat index values expected to reach the 100s in parts of the state and scattered afternoon storms possible