The air in Mexico City is thick with diesel fumes and a notorious smog, but for England’s players it will be the lack of oxygen that truly suffocates. On Monday, Thomas Tuchel’s side step into the Estadio Azteca – 2,240 metres above sea level – for a World Cup last-16 tie against a Mexico team who have lost there only twice in 89 competitive games. And the challenge is not just the altitude.
“It’s going to be tough, it’s going to be difficult because the altitude really affects you,” said former Colombia international Franky Oviedo, who spent four years playing for Club America at the Azteca. “It affects you because it’s hard to breathe, your legs feel much heavier. In Mexico City, besides the altitude, there is the added problem of pollution. The pollution, combined with the lack of air, is awful, it suffocates you.”
“England face altitude and pollution at the Azteca, with performance set to drop 3.1% due to 30% less oxygen.”
Oviedo, speaking to ESPN during the group phase, described a “lethal combination” for visiting teams. “At altitude, the ball travels faster, it slows down less because the air is thinner. So the ball comes and you think it’s coming at a certain speed because of habit, and before you know it, it’s right on top of you. Or you go to stop it and it bounces off. The mind thinks one thing, but the body reacts more slowly due to the lack of oxygen, and the ball travels faster. That’s why the pass changes, the touch changes, and mid-range shots – the ball doesn’t follow the normal parabola, but goes straight and travels incredibly fast.”
England have no time to acclimatise. They prepared for heat in the United States but have not trained at altitude. Juan Angel Hernandez, a sports medicine doctor at UNAM, Mexico’s largest public research university, has warned of a significant drop in performance. “It is known that a soccer player can run between four and six miles per game,” he said. “However, when the altitude is greater than 1,200 metres above sea level, a player’s performance can decrease by up to 3.1 per cent. At this altitude the amount of oxygen in the air is estimated to be 30 per cent lower, which will have a direct impact on aerobic performance.”
The latest air quality reading from Coyoacan, the borough where the Azteca sits, was described as “good” just weeks ago – but in the first 48 days of 2026, Mexico City recorded only three days of “acceptable” air quality. For England, the solution may be tactical. The Guardian’s Jacob Steinberg argues Tuchel must employ a low block, slowing the game down to avoid chaos, echoing José Mourinho’s approach at Anfield in 2014. “They want us to be the clowns in the circus,” Mourinho told his players before a 2-0 win. “We are not going to be the clowns.”
Tuchel himself predicted this World Cup would be “defined by suffering”. With Mexico backed by a passionate crowd and buoyed by a rampant last‑32 win over Ecuador, England’s journey could end at the same stadium where Diego Maradona tormented them in 1986. The question now is whether they can breathe – and still stand.