The city of Lahore in the eastern province of Punjab, near the Indian border, has one of the worst air quality in the world and is heavily polluted due to its population of over 13 million people. By early December 2023, air quality in the city had deteriorated so badly that schools, markets and parks were closed for four days. Last weekend, the city's air quality index (AQI) reached levels considered extremely hazardous to health. In an attempt to mitigate these problems, authorities in Punjab used cloud seeding on Saturday (16 December), using a small Cessna aircraft to bring rain to 10 locations in the city, the Guardian reported.