It is a fact of life that every major urban area across the world has horrific air quality. Depending on our habits and weather conditions, some days are better and worse than others.
The challenge is to adjust your exercise schedule accordingly based on the local ozone levels. Exercise from simply going about your daily life to focused cardio exercise.
Rush hour traffic pollution is the culprit. So modify your behavior but time of day.
Change your routine for that day. Take public transportation, telework that day, walk on the backstreets – anything from full exposure to the concentrated areas. All these small adjustments impact your level of exposure.
This video focuses on London, but it is the same everywhere.