🏃 Running
Running weather, scored for your next run
For runners the big risk is heat, not rain. BlockCast scores every block of your week for running with heat weighted at 8 out of 10 and a comfort band built for the effort, so the tempo run goes on the cool morning and the easy jog takes the drizzle.
Free. No account, no ads, no tracking. iPhone, iPad and any web browser.
What BlockCast checks for running
Every block gets a risk score from 0 to 100: green under 25, yellow under 55, red above. The worst factor drives the score and the others add to it. These are the default weights; you can change any of them in the app under Adjust.
Comfortable feels-like temperature: 0 to 26 °C (32 to 79 °F). Wind adds risk from 20 km/h (12 mph) sustained or 38 km/h (24 mph) in gusts.
How it works
- Pick running and your spot. Use your location or search any place in the world, and save up to three.
- Read your week at a glance. Choose 2, 3, 4 or 6 hour blocks and the hours you actually play. Tap any block for the hour-by-hour detail and the reason behind its colour.
- Plan it and stop checking. Add the session to your planner and your calendar. BlockCast re-checks every forecast and tells you if a planned session turns bad.
Running weather questions
What is the best temperature for running?
Most runners do their best work in the cool range, roughly 5 to 15 °C (41 to 59 °F). BlockCast scores running as comfortable between 0 and 26 °C (32 and 79 °F) of feels-like temperature, and above that the block turns yellow fast, because heat costs runners more than any other weather.
Should I run in the rain?
Usually yes: rain weighs only 5 out of 10 for running, against 10 for tennis. A steady downpour or a cold rain still pushes a block toward yellow, and you can raise the weight under Adjust if you hate wet socks.
Does BlockCast include air quality?
Yes, on the Today view: Canada’s AQHI for Canadian locations and the EPA AQI for US locations, which matters on wildfire-smoke days.
Where the data comes from
Forecasts come from Open-Meteo. Rain is the wettest of three models (the local best match, ECMWF and Canada’s GEM), so a green block means they all agree. Radar is the North American composite from Environment and Climate Change Canada; official alerts come from Environment Canada and the US National Weather Service.