Yes you’re correct, Dubai’s air quality has been in the red lately (and ranked the highest air pollution in the world!) according to https://www.iqair.com/.
There are always exceptions and nuances depending on where you live. Use your best judgement. If the air quality is very poor and it’s very windy, it’s better to keep windows shut and run an indoor air filter instead.
But when it’s not windy and the air quality is better, it’s definitely worth improving the air quality inside our homes by opening windows, weather permitting.
Great question. I think I’ll add a clarification note inside the module and link IQ Air’s air quality index website as a reference.