Karachi Faces Relentless Heat as Risks Grow

Extreme heat has stopped feeling like an emergency in Karachi and started looking like the new baseline.

An intense, prolonged heatwave has swept across Pakistan and India, with southern Pakistan hit especially hard through April and May. Reports indicate temperatures in Sindh have repeatedly climbed to 44C to 46C, far above seasonal norms. That kind of heat does more than empty streets in the afternoon. It disrupts work, strains households and pushes daily routines toward survival mode.

Outdoor labourers, transport workers and farming communities face the sharpest edge of the crisis. When the hottest hours make roads, fields and worksites dangerous, income drops fast. For many families, staying indoors offers safety but also carries a cost. The same weather that threatens health also cuts off wages, exposing how climate pressure lands hardest on people with the least room to adapt.

What once looked exceptional now appears with unsettling regularity, turning extreme heat into a recurring test of how long a city can keep functioning normally.

Experts say the unseasonably hot conditions across south Asia show the growing force of the climate crisis. The warning matters because heat does not arrive with the drama of a storm, even though it can prove just as destructive. It wears people down quietly, compounds existing inequalities and tests public systems that often struggle to protect the most exposed residents.

The immediate challenge now centers on endurance: how cities like Karachi protect workers, maintain services and reduce health risks as extreme heat grows more common. What happens next matters far beyond one season. If this pattern holds, heat planning will no longer sit at the edge of public policy. It will move to the center of how the region prepares for work, health and life in a hotter future.