HIGHWAYS / 401 ONTARIO 401 401 weather today, stretch by stretch Highway 401 · Windsor to Quebec border · 856 km
UPDATED Tue, 20:12 EDT · EVERY HOUR
Thunderstorms between Oshawa and Quebec border. Conditions may make this stretch difficult or dangerous.
WHERE Oshawa → Quebec border WORST Around Tue, 20:00 EDT EASES By Wed, 02:00 EDT · mild at worst ELSEWHERE 7 of 12 stretches calm or mild CLOSED? We don’t track closures or chain laws. Check Ontario 511 ↗ YOUR PART OF 401
FROM Windsor Chatham London Woodstock Cambridge Mississauga Toronto Oshawa Belleville Kingston Brockville Cornwall Quebec border TO Windsor Chatham London Woodstock Cambridge Mississauga Toronto Oshawa Belleville Kingston Brockville Cornwall Quebec border ⇄
Pick where you join and leave the highway to see just your stretches.
TIME IT TO YOUR DRIVE IN THE APP → This page shows the road at one moment. The app forecasts each stretch for when you reach it. RADAR LIVE · Roads © OpenStreetMap contributors
12 STRETCHES · 856 km
Stretch by stretch, now NO STRETCH CONDITIONS NEXT 24 H TEMP
01 Windsor → Chatham ON · 76 km Clear 23°C
02 Chatham → London ON · 109 km Clear 23°C
03 London → Woodstock ON · 48 km Fair 22°C
04 Woodstock → Cambridge ON · 52 km Fair 22°C
05 Cambridge → Mississauga ON · 69 km Fair 22°C
06 Mississauga → Toronto ON · 22 km Fair 23°C
07 Toronto → Oshawa ON · 49 km Fair 21°C
08 Oshawa → Belleville ON · 129 km Thunderstorms 17°C 09 Belleville → Kingston ON · 76 km Thunderstorms 16°C 10 Kingston → Brockville ON · 85 km Thunderstorms 13°C 11 Brockville → Cornwall ON · 98 km Thunderstorms 10°C 12 Cornwall → Quebec border ON · 43 km Thunderstorms 8°C THE APP · FREE
Save 401, and the drives you take on it. This page shows the whole road at one moment. In the app, every stretch is forecast for the time you’ll actually be on it, and your drives are saved for next time.
Every stretch forecast for the moment you reach it Your drives saved, ready for the next trip A spoken briefing before you leave BEFORE YOU GO
Closures, chain laws and road conditions ROAD CONDITIONS AND CLOSURES
OFFICIAL WARNINGS
Official weather warnings come from the national weather service where you are driving. This page is our forecast, not an official warning.
QUESTIONS
Is 401 closed right now? We don’t track closures or chain controls. Check Ontario 511 before you leave; every road-conditions service along 401 is listed above.
How often is this page updated? Every hour, from the latest forecast. The time at the top of the page says when it was last updated.
Is this an official weather warning? No. This is a forecast of what to expect along the road. Official warnings come from the national weather service where you are driving.
How is this different from the app? This page shows the whole highway at one moment. Windshield Weather follows your own drive: every stretch is forecast for the time you reach it.
Save 401 in the app FREE · IPHONE AND ANDROID GET THE APP 