Lahore recorded no day in October 2026 with its air quality index (AQI) above 300, the first time in five years the city has gone a whole October without a hazardous day, according to the Punjab government.

Senior Provincial Minister Marriyum Aurangzeb said the city's air pollution in October 2026 was 27 per cent lower than in the same month last year, and October 2026 was the city's cleanest month since October 2023. Average PM2.5, the fine particulate matter most harmful to health, fell from 136.3 micrograms per cubic metre in October 2025 to 100.1 in October 2026, according to Khabr.

What the official figures show

A report by the Environment Protection and Climate Change Department (EPCCD) found a 15 per cent net improvement across six major air pollutants during the first year of the Punjab government's real-time air quality monitoring programme. The city's peak AQI fell by 28 per cent in October 2026 compared with the same month last year, The News reported.

In October 2025, Lahore recorded four days in the hazardous category, defined as an AQI above 300. In October 2026 there were none. Data from the Pakistan Air Quality Initiative showed pollution declined at all 26 of Lahore's monitoring locations.

The EPCCD said the first reading on Punjab's real-time air quality portal was published on 1 October 2025, with an initial network of 30 regulatory-grade monitoring stations. The government plans to increase the number of stations to 100 during the 2025-26 period.

Weather played a part

Officials and analysts cautioned against crediting the improvement to government action alone. According to Pakistan Meteorological Department statistics, Lahore received 50 per cent less rainfall in October 2026 than in October 2025, so the improvement came despite drier conditions, but wind direction, temperature and other weather factors also matter.

The Pakistan Air Quality Initiative estimated that favourable weather lowered PM2.5 by about 19 per cent compared with the concentration expected under the previous October's weather. When both months were compared under the same typical weather conditions, the estimated improvement narrowed to about four per cent, according to Asia Daily. Minister Aurangzeb herself said an independent review and transparent monitoring of the improvement figures was necessary.

Smog returned in November

The October progress did not last into November. Lahore's air quality deteriorated sharply on Monday 9 November, with IQAir recording an hourly AQI of 647, placing the city deep in the hazardous category and at the top of its ranking of the world's most polluted major cities, according to PakWheels.

Punjab officials linked the latest spike partly to smoke moving across the border following Diwali celebrations in India, combined with fireworks and existing regional pollution, although the precise share attributable to cross-border sources has not been independently established. Some monitoring locations in Lahore reportedly crossed an AQI of 1,000.

The Punjab Environment Protection Department was expected to issue a comparative assessment on Tuesday 10 November to determine how weather, local emissions, agricultural fires and pollution travelling from across the border contributed to the latest smog episode.