Mumbai has always possessed an extraordinary ability to reinvent its skyline. Entire neighbourhoods have transformed within a decade. Old industrial belts have become financial districts. Ageing buildings have given way to soaring towers. Redevelopment has evolved from an urban necessity into an economic engine that now defines the city’s modern identity.

Yet, amid this relentless pursuit of vertical growth, Mumbai has steadily weakened the ecological foundations that once made the city more breathable, more shaded, and more climatically forgiving.

The city’s summers feel visibly harsher than they did even a decade ago. Roads radiate accumulated heat well into the night. Dense clusters of glass, steel, and concrete have altered how entire neighbourhoods absorb and retain temperature.

Mumbai’s residents respond in the familiar manner the city has conditioned them to. People grumble briefly inside offices, homes, taxis, housing societies, and overcrowded suburban trains. The frustration is real, but fleeting. The city’s deeply embedded culture of endurance quickly absorbs the discomfort. Most citizens privately acknowledge the deterioration while simultaneously convincing themselves that climate distress remains someone else’s responsibility to solve.

Mumbai today faces the combined burden of aggressive urbanisation and accelerating climate volatility. Studies on the city’s urban heat island effect have shown significant temperature variations between heavily concretised zones and vegetated areas. Researchers have repeatedly warned that Mumbai’s rapid built-up expansion, shrinking open spaces, and declining green cover are intensifying localised heat stress.

The city’s own Climate Action Plan recognises rising........

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