Setting your car ventilation to “recirculate” considerably helps to reduce exposure to air pollution while driving.
Open car windows also quickly raise in-vehicle pollutant concentrations to on-road levels.
Keeping windows closed for over 30 minutes with several passengers raises carbon dioxide levels in cars, however. To prevent this, outside air should be pulled in every 10-15 minutes for 1-2 minutes.
Car ventilation settings determine pollution exposure
Protect against polluted city soil
Olivia Rose-Innes is Health24’s EnviroHealth Editor. Read more of her columns and articles or post a question to her expert forum.