Canada
Air quality in Toronto is acceptable. Consider reducing intensity or duration.
Data from Open-Meteo • Updated 9:43:07 PM
Toronto's air quality is generally good but can be impacted by cross-border pollution from the US Midwest and local traffic emissions. Smog advisories are issued during summer heat waves when ozone and PM2.5 levels rise. Lake Ontario breezes can help disperse pollutants along the waterfront.
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Try it freeToronto typically sees AQI readings between 20 and 55. Summer smog events can push readings into the Moderate range, particularly during prolonged heat waves with stagnant air.
Morning runs along the lakefront or through the Don Valley trails offer the best air quality. Spring and early fall provide the most consistently clean conditions.
Deep dive into pollutants, thresholds, and how air quality affects your running performance.
Quick threshold lookup for every AQI level. Know when to run and when to stay indoors.
Practical rules for training during smoke events: when to go indoors and how to recover.