The Pakistan report said the available evidence did not support attributing Lahore's poor air quality after Diwali to fireworks across the border. Pakistan has blamed India's Diwali fireworks for Lahore's toxic air, but an independent assessment questions the claim and points to multiple pollution sources. There is little doubt that fireworks contribute to air pollution, and pollutants can travel across international borders depending on wind direction. However, blaming Diwali for Lahore's pollution.