Stop guessing.
Start running.
Know exactly what to wear before every run, tuned to the weather and how you run.
Key runner intelligence you can count on.
What to wear
A clear outfit for the exact conditions, tuned to whether you run hot or cold, your pace, and your distance.
When to run
See how the next hours score across heat, wind, rain, and air quality, so you can pick your best window.
Before you ask
Pro alerts reach you ahead of your run and home-screen widgets keep the call one glance away.
More than what to wear
RunnersKit reads the full picture of your run, then keeps you ahead of it.
Powerful kit recommendations
Every hour weighs the full picture: feels-like temperature, wind, rain, humidity, UV, and daylight, matched to your pace, distance, and how you run.
RunFeel temperature
You run warmer than the air, so RunFeel shows what the run actually feels like on your body.
RunReady score
A smart run readiness score that analyses run conditions so you know what to expect.
Air quality you can trust
Hourly AQI anchored to the nearest ground station and the state forecaster’s own call, so smoke days read right when models miss them.
Replace your weather app
Forecasts, air quality, and conditions robust enough to be the only weather app on your phone.
Race Day analysis
Set your race and watch the forecast sharpen as it nears, from early outlook to an hour by hour plan with RunFeel at the gun.
Next run analysis
A read on your scheduled run, with better windows surfaced if they exist.
Post-run calibration
Say how each run felt and RunnersKit tunes RunFeel to your body, so the app keeps getting sharper.
Rain nowcast
Minute by minute rain for the next hour, so you know whether to head out now or let the shower pass.
Run schedule
Save your regular runs and get guidance built around them.
Next-run alerts
A heads up about 11 hours ahead when conditions for your run are about to turn.
Apple Watch app
Your kit recommendation and the hours ahead on your wrist, with 7 complications like the RunFeel hourly graph so you’re always prepared.
Live tiles
Your next run on the home and lock screen, always a glance away.
7 day forecast
Look ahead and plan the week around the weather.
Weather alerts
Official watches and warnings for your area, surfaced right on your run screen.
Dew point & UV
The dew point that warns of a sticky run, plus the UV for when to grab a cap and sunglasses.
Coach tips
Short, specific cues tuned to the day you are heading into.
Customize your app
Change your runner’s look, pick from different app backgrounds, and switch between light & dark mode.
* Included with RunnersKit Pro
What to wear running, by city
By temperature and condition
Air quality you can trust
Most apps show you an air quality model.
We check it against the ground.
On July 16, 2026, wildfire smoke settled over Minnesota. The air-quality models most apps use called Anoka Moderate: fine for most runners. The EPA monitoring station 5 km away read Hazardous, and the state had an alert out.
The model said
The station read
RunnersKit now anchors your air quality to the nearest ground station and the state forecaster’s own call for the day, then keeps the model only for the hour-to-hour shape. The number you get is the air you will actually breathe.
How we read air quality →Get RunnersKit on your iPhone.
The full app is live on the App Store, with hourly timing, alerts, and widgets, all tuned to how you run.