Lahore once again ranked as the world’s most polluted major city early on Thursday, 29 October 2026, recording an Air Quality Index of 298, according to Pakistan Observer. The reading, reported at 4:15am, placed Lahore at the top of the live ranking of major cities, in the very unhealthy range. A day earlier, at 10am on 28 October, Lahore had also topped IQAir’s live ranking with a reading of 296, while Karachi ranked fifth at 173, classified as unhealthy. The recurrence of the top ranking underlines how persistent the smog episode has become in Punjab’s capital as winter approaches. IQAir’s real-time city ranking for Pakistan on Thursday morning showed even higher readings in other Punjab cities. Multan topped the Pakistan list at 649, followed by Faisalabad at 346, Lahore at 298, Gujranwala at 291, Rahim Yar Khan at 284, Bahawalpur at 213, Peshawar at 189, Sialkot at 179, Rawalpindi at 174 and Hundal at 170. Within Lahore itself, individual monitoring stations varied widely, with readings including 585 at the CERP Office, 416 at Allama Iqbal Town, 318 at AirWatchPakistan, 310 at ARC Lahore and 295 at Cantonment in one snapshot, a reminder that air quality can differ sharply from one neighbourhood to another and from one hour to the next. By midday, weather.com reported a lower Lahore figure of 164, rated unhealthy, with PM2.5 as the primary pollutant, along with fair conditions, 28 degrees Celsius, calm wind and a high of 30 degrees for the day. The difference between the early-morning ranking and the midday figure does not mean either reading is wrong: pollution levels move through the day with traffic, temperature, wind and the height of the atmospheric boundary layer, and different monitors measure different locations. Readers should therefore treat any single AQI number as a snapshot for its time and place, not as a fixed value for the whole city for the whole day. Health guidance for such levels is consistent across the monitors: people with heart or lung conditions, older adults and children should limit prolonged outdoor exertion, and anyone experiencing persistent coughing, shortness of breath or chest tightness should seek medical guidance. Masks that filter fine particles, keeping windows closed during the worst hours, and avoiding outdoor exercise when the air is at its thickest are among the precautions commonly advised. A report on 28 October noted that, despite the hazardous air quality and concern about students’ health, the government had not yet announced any decision to close schools in Lahore, and parents and students were awaiting an official announcement. No new school-closure announcement was confirmed in the reports checked for this article, so readers should rely on official Punjab government notifications rather than rumours on social media. The smog problem is not new to Lahore. Each autumn, a combination of vehicle emissions, industrial smoke, brick-kiln emissions, construction dust and crop-residue burning, together with calm winds and temperature inversions that trap pollutants close to the ground, pushes readings into unhealthy and hazardous ranges. Punjab officials have also said easterly winds bring polluted air from across the border, while acknowledging that domestic emissions must also be tackled. Sources: Pakistan Observer via Scoop; IQAir city ranking; weather.com Lahore.
Lahore Again Ranked World’s Most Polluted City as AQI Hits 298 on 29 October
