News Summary
Jacksonville is under an extreme heat warning as temperatures soar above 100°F for the second consecutive day. The National Weather Service has cautioned residents about high humidity leading to a heat index making it feel even hotter. Individuals are urged to stay hydrated and avoid strenuous activities. The CDC warns that heat exhaustion can escalate to heat stroke without quick intervention. Outdoor workers are particularly at risk and must take precautions to prevent heat-related illnesses. Weather forecasts show high temperatures are likely to continue throughout the week.
Jacksonville is experiencing extreme heat, marking the second consecutive day with temperatures soaring to 100 degrees Fahrenheit or more. The Jacksonville International Airport recorded a high of 101 degrees on July 28, 2025. In response to the dangerously high temperatures, the National Weather Service has issued an extreme heat warning for the area, effective from noon to 7 p.m. today.
Weather forecasts predict temperatures will range between 95 and 103 degrees, but the heat index could make it feel significantly hotter, at levels between 108 and 115 degrees due to high humidity. In light of these conditions, residents are strongly advised to take precautions against heat-related illnesses. Avoiding strenuous outdoor activities, ensuring hydration, and seeking out cooler environments are vital steps to stay safe during this heat wave.
The Centers for Disease Control and Prevention (CDC) emphasizes that heat exhaustion can escalate to heat stroke if not addressed immediately. Symptoms of heat exhaustion include heavy sweating and fatigue, while heat stroke involves an inability of the body to self-regulate its temperature, which can be life-threatening. If someone is suspected of suffering from heat stroke, it is important to cool them down as much as possible and wait for medical assistance rather than giving them water.
Outdoor workers are particularly vulnerable in these extreme temperatures. They are encouraged to drink at least 8 ounces of water every 20 minutes—regardless of thirst—and to replenish lost electrolytes. However, it’s advised to avoid consuming sugary or caffeinated drinks, which can exacerbate dehydration.
The heat conditions appear to be ongoing. In the upcoming weather forecast, partly sunny skies are expected to persist with high temperatures remaining above 95 degrees throughout the week. Isolated thunderstorms may provide some relief but are not guaranteed. On July 29, 2025, the day has been designated as a First Alert Weather Day due to projected extreme heat.
Temperatures in the days ahead are expected to reach 99 degrees, with the heat index creating conditions resembling 110-115 degrees. Midweek temperatures may slightly decrease to around 98 degrees, but the overall trend suggests the potential for challenging heat conditions. Stray storms are in the forecast every day through the following Monday, which may help cool temperatures temporarily but could also lead to unpredictable weather changes.
As residents of Jacksonville navigate these extreme heat conditions, staying informed and following safety guidelines are crucial for ensuring public health. The ongoing monitoring of weather alerts and recommended actions will aid in mitigating the risks associated with extreme heat exposure.
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Additional Resources
- Jacksonville.com: Dangerous Heat in Jacksonville
- Action News Jax: First Alert Weather Day – Continued Dangerous Heat
- News4Jax: Jacksonville Braces for Dangerous Heat Advisory
- ABC News: 130 Million People Brace for Sweating Conditions
- Newsweek: Cities in Florida Facing Triple-Digit Heat Advisory
- Wikipedia: Heat Wave
- Google Search: Extreme Heat Precautions
- Google Scholar: Heat Related Illnesses
- Encyclopedia Britannica: Heat Stroke
- Google News: Jacksonville Heat Warnings
Author: STAFF HERE JACKSONVILLE WRITER
The JACKSONVILLE STAFF WRITER represents the experienced team at HEREJacksonville.com, your go-to source for actionable local news and information in Jacksonville, Duval County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as the Jacksonville Jazz Festival, Riverside Arts Market, and World of Nations Celebration. Our coverage extends to key organizations like the Jacksonville Chamber of Commerce and JAXUSA Partnership, plus leading businesses in logistics, healthcare, and entertainment that power the local economy such as CSX Corporation, Baptist Health, and VyStar Credit Union. As part of the broader HERE network, including HEREOrlando.com, HEREStPetersburg.com, HERETallahassee.com, and HERETampa.com, we provide comprehensive, credible insights into Florida's dynamic landscape.
