Islamabad, Lahore, Karachi and Peshawar
According to the most recent World Health Organization data, there are some good reasons to be worried about the air quality in Lahore, with an yearly average of 68 µg/m3 of PM2.5, which corresponds to a 155 - Unhealthy Air Quality Index
Obviously, 165 - Unhealthy is just a yearly average, and the air pollution can reach much higher 300+ hazardous levels- just like the recent smog events in early November 2016.
Unfortunately, there is currently no known Air Quality monitoring network with PM2.5 data available in Lahore, nor in Pakistan (source).
Air Quality Forecast for Lahore
Monitoring the Air Quality
GAIA A12 Monitoring Station
Unless data is made available by the authorities, the World Air Quality Index project recommends to start publishing real-time data using some of the affordable air quality monitoring stations, such as the GAIA A12 (picture on the right).