Japan
Air quality in Tokyo is acceptable. Consider reducing intensity or duration.
Data from Open-Meteo • Updated 11:36:39 PM
Tokyo has dramatically improved its air quality since the 1970s through strict emissions controls, though summer heat can still raise ozone. Cherry blossom season in spring and autumn offer the best running conditions. The Imperial Palace circuit and Yoyogi Park paths provide green corridors with noticeably cleaner air than busy intersections.
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Try it freeTokyo typically sees AQI values between 25 and 55. Spring can bring transboundary PM2.5 from mainland Asia, and summer heat occasionally triggers photochemical ozone alerts.
Autumn offers the best combination of cool temperatures and clean air. Morning runs around the Imperial Palace or through Yoyogi Park are popular among Tokyo's running community. Check conditions during spring dust season.
Vehicle emissions, industrial activity, and photochemical reactions produce the bulk of Tokyo’s pollution. Transboundary PM2.5 from mainland Asia affects the region, particularly in spring. Summer heat triggers photochemical smog alerts, though strict emission regulations have significantly improved overall air quality.
The Imperial Palace running loop is Tokyo’s most popular route with relatively clean air. Yoyogi Park, Shinjuku Gyoen, and the trails along the Tama River offer green alternatives. For the cleanest air, head to the western suburbs near the Okutama mountains.
Spring (March–May) can bring PM2.5 from continental Asia and yellow sand (kosa) from Chinese deserts. Summer photochemical ozone alerts peak in July and August. Autumn and early winter typically have the cleanest air, combined with comfortable running temperatures.
Check the current AQI at the top of this page for real-time conditions. Tokyo generally has good air quality by global standards. Most days are safe for outdoor exercise, but check during spring dust events or summer heat advisories.
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