All day tomorrow August 7, all STL riders will be able to take the bus for $1 only, due to a smog alert issued by Environment Canada. This special rate will be in effect on STL’s entire regular network (buses and shared taxis) to riders paying on board in cash, credit or debit. 

Launched in 2008, the STL's Smog Alert is a unique initiative in Canada. It aims to promote the use of public transit rather than the car when the air quality deteriorates to the point of falling below acceptable standards.

The STL monitors Environment Canada smog alerts until Labor Day.