The 2026 FIFA World Cup kicks off across 16 North American stadiums in the thick of summer, and an NPR analysis of two decades of temperature data has delivered a sobering finding: more than one-third of all matches face high risk for dangerously hot, humid conditions. Dozens more carry moderate risk.
For Atlanta, the picture is mixed. Mercedes-Benz Stadium — the venue for all of Atlanta's group-stage matches — is one of a handful of World Cup stadiums equipped with air conditioning and a retractable roof. Players and the 71,000-seat crowd will be climate-controlled inside the building. But the heat outside is a different story, and it matters for the millions of fans, volunteers, and workers who will spend hours in downtown Atlanta before and after every match.
The Numbers
NPR cross-referenced historical wet bulb globe temperatures — a measurement that accounts for humidity, shade, and solar radiation — against OSHA and American College of Sports Medicine heat hazard guidelines. Of the tournament's 104 matches, 67 are scheduled at locations and times that carry potential danger for heat illness. Thirty-nine of those rank as high risk.
Miami, Houston, Dallas, and Atlanta rank near the top in average temperature for their scheduled matches, with historical averages reaching 84 degrees Fahrenheit during match windows. Atlanta's indoor venue mitigates the on-field danger, but several host cities — Philadelphia, New Jersey, and Kansas City among them — have open-air stadiums with no roof and no air conditioning.
FIFA's Response
FIFA told NPR it scheduled many games for cooler afternoon and evening hours, added extra water breaks for players and referees, and installed sideline air conditioning for bench personnel. The organization also committed to activating "additional cooling capacity, including shaded areas, misting systems, cooling buses and expanded water distribution" when conditions warrant it.
However, FIFA did not answer questions about specific temperature thresholds for triggering those protections, whether every venue has misting systems available, or why the World Cup final is scheduled for 3 p.m. at an uncovered stadium outside New York City — during the hottest part of the day.
In a late update, FIFA also reversed its initial policy on spectator water bottles, prohibiting fans from bringing factory-sealed bottles into stadiums after initially allowing them.
The Risk Is Not Theoretical
Heat emergencies have already occurred at professional soccer matches in the United States. During a June 2024 international match in Kansas City, referee Humberto Panjoj collapsed on the field due to heat illness and was rushed to a hospital. A nearby Kansas City stadium will host the Tunisia vs. Netherlands match on June 25, 2026 — exactly two years later.
In Miami in 2024, a star Uruguay player left a match at halftime due to dizziness and dehydration. In Houston in 2017, professional player Rachel Daly collapsed from heat exhaustion despite additional water breaks during the game. She later posted: "Those conditions are not safe to play at your maximum."
What It Means for Downtown Atlanta
Atlanta's climate-controlled stadium is a genuine advantage — one that FIFA acknowledged by scheduling high-profile matches here. But downtown Atlanta in mid-June through mid-July is hot. The Fan Fest at Centennial Olympic Park, the watch parties, the restaurant patios, the walks between MARTA stations and Mercedes-Benz Stadium — all of that happens outside.
For visitors arriving from cooler climates, the combination of Atlanta's heat and humidity can be disorienting. Knowing where to find water, shade, and air-conditioned spaces is not optional — it is a health decision. The downtownATL directory and map are built to help with exactly that.
Original reporting by Rebecca Hersher and Rahul Mukherjee, NPR via Georgia Public Broadcasting, June 4, 2026.