India is facing a quiet but alarming environmental shift: it is literally losing sunlight. Over the past three decades, scientists have recorded a nationwide decline in sunshine hours, with clouds and air pollution jointly dimming the skies. Aerosols from vehicle emissions, crop burning, and industrial growth scatter sunlight and change cloud behaviour, blocking more solar radiation. According to recent studies, aerosols have reduced sunlight reaching the ground by about 13%, while clouds contribute an additional 31–44% loss. The impact extends far beyond gloomy days: it threatens agriculture, health, and India’s booming solar energy sector. Pollution already cuts solar power output by up to 41%, costing hundreds of millions in lost energy each year. Cleaner air could unlock enormous renewable potential and protect crop yields vital for millions. The Earth’s surface has gradually been receiving more sunlight since the 1980s, a process known as global brightening, but India risks running on fumes instead of full power, beneath a shroud of smog.