By Prakash Nair 
New Delhi, June 6: FIFA had a grand vision for 2026. Forty-eight teams, three countries, sixteen cities, the biggest World Cup in history. On paper, it looked like an organisational triumph. What the brochure did not quite highlight was the calendar. June 11 to July 19. The height of North American summer. And across a good chunk of those sixteen host cities, summer is not a gentle season. It is oppressive, stubborn, sometimes dangerous.
Scientists and player unions have been raising alarms about this for months. Now, with the tournament literally days away, those warnings are no longer theoretical.
More Than a Third of Matches Already Flagged as High Risk
An analysis by NPR found that more than one-third of World Cup matches carry a high risk of dangerously hot and humid conditions. Not warm. Not uncomfortable. Dangerous. Millions of fans, players, stadium workers, and volunteers are set to be exposed, with dozens of additional matches rated as moderate risk.
Let that sink in for a moment. We are talking about the most-watched sporting event on the planet, and a significant chunk of its fixtures are being played in conditions that climate and health researchers consider genuinely hazardous.
The metric most scientists rely on is called the wet-bulb globe temperature, or WBGT. It is more useful than a standard thermometer reading because it accounts for humidity, wind speed, and solar radiation, the full cocktail of what the human body actually has to deal with. FIFPRO, the international players’ union, recommends matches be postponed when WBGT crosses 28 degrees Celsius. Researchers at Imperial College London have now predicted that five games at this tournament could hit that threshold or beyond, up from three games at the 1994 World Cup, the last time the United States hosted the men’s edition. The number is moving in the wrong direction.
Where the Risk Is Worst
The geography of danger clusters heavily in the south and along the Gulf Coast.
Houston sits near the top of almost every heat-risk analysis. Research suggests the city will experience three-quarters of its June-July afternoon hours with WBGT above the safe-play limit. Miami layers high humidity on top of already significant heat, a combination that hits the body harder than dry heat alone. The Dallas region, where Arlington’s venue sits, shows historical patterns of WBGT repeatedly breaching safe thresholds during afternoon summer hours. And then there is Monterrey in northern Mexico. That city’s blend of heat and humidity puts it in the conversation for the most physiologically demanding venue in the entire tournament.
According to data cited in the source material, average hourly UTCI readings in Monterrey, Arlington, and Houston were projected to exceed 49.5 degrees Celsius. UTCI is another measure of how much thermal load the human body is actually carrying. At 49.5 degrees on that scale, you are well into what researchers classify as extreme stress territory.
Climate Central’s research adds a longer historical lens to all this. The frequency of extremely hot June-July days has roughly tripled, on average, across ten cities that previously hosted World Cup matches in 1986 and 1994. Pollution from burning coal, oil, and gas accounts for nearly half of all such days since 1970, across all 2026 host stadiums combined. This is not a natural weather cycle. This is decades of accumulated damage showing up in the scheduling sheet of a football tournament.
The Stadiums Are Not All Equal
Some venues are better equipped to handle this than others, and the gap between them is significant.
AT&T Stadium in Arlington and NRG Stadium in Houston are both fully air-conditioned. Controlled indoor environments. Players and fans will have a degree of protection during matches there. FIFA’s scheduling has tried to account for this by pushing daytime kickoffs toward these climate-controlled venues, while routing higher-risk open-air stadiums toward evening slots.
That said, evening is not a guaranteed escape. Stored daytime heat, high overnight humidity, and the simple fact that players have often been warming up for an hour before kick-off means evening fixtures are not without risk either.
Hard Rock Stadium in Miami has a partial canopy but is not fully enclosed or air-conditioned. Sections of the crowd will be sitting in open air. Estadio Monterrey is an entirely open venue with no climate-controlled seating bowl. For tens of thousands of fans who paid for tickets and travelled to northern Mexico to watch the world’s biggest tournament, the heat is simply what it is. There is no engineering solution waiting for them in their seats.
This is not a minor logistical footnote. It is a real disparity in the experience and safety of people attending this event.
A Climate Crisis Wearing Football Boots
The honest framing here is that this is not really a FIFA problem or a North American problem in isolation. It is a climate problem that has caught up with football’s biggest showpiece.
Research from World Weather Attribution found that matches held in inland areas of the United States and Mexico will frequently approach or exceed 30 degrees Celsius, with real potential for extreme heat during daytime play. High temperatures combined with high humidity are described, flatly, as potentially very dangerous for the human body, especially during strenuous physical activity like professional football. That is not alarmist language. That is what the science says.
Queen’s University Belfast made a similar point in January 2025, warning FIFA that WBGT readings in certain host cities were actually higher than what Qatar recorded during its winter World Cup in 2022. Read that again slowly. Qatar, which moved its entire tournament from June to November specifically to avoid heat, was cooler by this measure than some 2026 venues will be in summer. The 2025 FIFA Club World Cup, held in the US as a dry run of sorts, saw matches played in temperatures between 32 and 39 degrees Celsius, and weather delays were reported.
This is not a hypothetical. It has already happened once on these same grounds.
The Players Bearing the Biggest Burden
The heat load is not evenly distributed across the 48 competing nations. A Bloomberg analysis of historical temperature and humidity data found that Tunisia will face the highest cumulative heat exposure based on its match schedule. France, the 2022 finalist, follows close behind. Teams drawn into fixtures in southern cities during afternoon slots will be working significantly harder than their bodies should reasonably be asked to handle.
History offers a stark reference point. The women’s Olympic football final in Tokyo in 2021 was delayed by ten full hours because of extreme humid heat and concerns for player safety. That was a single match. This tournament has dozens of them, running across five weeks.
FIFPRO has reported instances of heat-related illness among professional footballers in recent years. This is already happening at the elite level. At the 2026 World Cup, with 1,248 players from 48 nations competing across the hottest summer stretch of some of North America’s most demanding cities, the exposure is on a different scale entirely.
What FIFA Has Done, and What Researchers Say Is Still Missing
FIFA’s concrete response has been to mandate cooling breaks at the 22nd and 67th minute of every match, regardless of the actual conditions at kick-off. There is also a scheduling strategy that steers the highest-risk outdoor venues toward evening slots. These are not nothing. But researchers have been fairly direct in saying they do not think it is enough.
Several groups have called for kick-off times to be moved more aggressively into cooler morning or late evening windows, arguing that standard cooling breaks, applied uniformly whether it is 24 degrees or 44 degrees outside, cannot account for the full physiological stress players are carrying into each match. The breaks help. They do not solve the problem.
Argentina defend their title as world champions, having lifted the trophy in Doha in 2022. Every one of the 1,248 players from 48 countries set to take the field this summer will face, in varying degrees, an environment that researchers spent years warning was coming.
For Indian Fans Making the Trip
A significant number of Indian football fans, and South Asian travellers more broadly, will be in North American stadiums this summer. For those heading to Houston, Miami, or Dallas, practical preparation matters. Sitting in an outdoor stadium in June in those cities, even in the evening, is physically demanding. Hydration is not optional. Sun protection is not optional. Knowing which sections of your venue are shaded or climate-controlled is worth checking before you arrive. The excitement of being there in person is real. So is the heat.
What the Next Five Weeks Will Reveal
There is a larger story underneath all of this. The 2026 World Cup heat problem is, in many ways, a preview of where sport is heading as global temperatures continue to rise. The window in which major outdoor events can be held safely is narrowing, and football, with its 90-minute matches requiring sustained elite physical output, is particularly exposed.
Whether FIFA’s measures prove adequate is a question the tournament will answer in real time, across five weeks of football played at the edge of what the climate is prepared to tolerate. What is already beyond debate is that the heat will be a factor. In some cities, in some matches, it may well be the decisive one.
Stay ahead with Hindustan Herald — bringing you trusted news, sharp analysis, and stories that matter across Politics, Business, Technology, Sports, Entertainment, Lifestyle, and more.
Connect with us on Facebook, Instagram, X (Twitter), LinkedIn, YouTube, and join our Telegram community @hindustanherald for real-time updates.
Sports reporter covering cricket, football, and Olympic disciplines, with on-ground event experience.
- Prakash Nair
- Prakash Nair
- Prakash Nair
- Prakash Nair
