:The [[air pollution]] in [[Lahore]], [[Punjab, Pakistan|Punjab]], [[Pakistan]], reaches a record-high [[air quality index]] score of 1,900, with the [[Government of Punjab, Pakistan|Punjab government]] ordering a mandatory closure of all primary schools for one week, blaming [[stubble burning]] for the poor air quality. [https://www.bbc.com/news/articles/c5ymg64ynm7o (BBC News)] [https://www.geo.tv/latest/572374-lahore-residents-forced-to-breath-highly-toxic-air-as-aqi-surpasses-1000-again (Geo News)] [https://www.ndtv.com/world-news/at-aqi-of-1-900-this-pakistan-city-is-worlds-most-polluted-blames-winds-from-india-6940977 (NDTV)]