RADAR LIVE · Roads © OpenStreetMap contributors
Stretch by stretch, now
Save 400, 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
iPhone, iPad, Mac and Android. No ads.
Closures, chain laws and road conditions
Official weather warnings come from the national weather service where you are driving. This page is our forecast, not an official warning.
Is 400 closed right now?
We don’t track closures or chain controls. Check Ontario 511 before you leave; every road-conditions service along 400 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.
