Rain & Wind: When to Push Through, When to Stay In
Precipitation and wind make up 25% of your Training Conditions Score together. Here's a practical framework for deciding when weather makes outdoor training worth it — or not.
Quick Answer
Light rain? Go — it cools you down and the air is often cleaner. Heavy rain or thunderstorms? Skip, no question. Wind depends on context: cooling breeze in summer is welcome (score goes up), biting headwind in winter is not (score drops). The Training Conditions Score factors in both precipitation intensity and wind speed alongside temperature to give you one answer.
This is general guidance, not medical advice. Consult a healthcare provider if you have respiratory or cardiovascular conditions.
How Rain and Wind Affect Your Training Conditions Score
Precipitation carries 15% of your Training Conditions Score. Light rain has minimal impact, but heavy rain drops the score sharply. Thunderstorms push the precipitation component to near zero.
Wind carries 10%. Unlike rain, wind's impact is context-dependent — the score accounts for temperature when evaluating wind. A 20 km/h breeze at 32°C raises the score (welcome cooling), while the same wind at −5°C drops it (dangerous windchill).
Training in Light Rain: Often Better Than You Think
Many runners skip training at the first sign of rain — but light rain is actually one of the better conditions for outdoor exercise:
- Rain washes pollutants from the air, often giving you the cleanest AQI of the day
- Light rain cools you down, which is beneficial in warm weather
- Fewer people on paths and trails means a more peaceful session
- After the rain stops, the next 1–2 hours often have excellent conditions
The key to enjoying rain running: a lightweight, breathable rain jacket (not a heavy waterproof), a brimmed cap to keep rain off your face, and shoes with good drainage rather than waterproofing.
Check Your Training Conditions Score
See your score for any location — air quality, temperature, wind, rain, humidity, and UV combined.
Try Aeriqo FreeHeavy Rain and Thunderstorms: When to Stay Inside
There's a clear line between refreshing rain and dangerous weather. Skip outdoor training when:
Thunderstorms
Lightning is a serious, immediate danger for outdoor athletes. If you can hear thunder, you're close enough to be struck. Move indoors immediately — wait at least 30 minutes after the last thunder.
Heavy Downpours
Visibility drops, trails become slippery, and flooding risk increases. Wet surfaces combined with reduced visibility create fall hazards.
Hail
Even small hail can cause injury. Large hail is genuinely dangerous. There's no gear solution — just go inside.
Your Training Conditions Score drops below 20 in these conditions — a clear signal to move your workout indoors or reschedule.
Wind: Friend or Foe? It Depends on Temperature
Wind is the most context-dependent factor in the Training Conditions Score. The same wind speed can help or hurt depending on the temperature:
Hot Day + Wind
Wind increases evaporative cooling, helping your body shed heat. A 20 km/h breeze at 30°C can make conditions feel 5°C cooler. The score actually rises.
Cold Day + Wind
Wind strips heat from your body through convection (windchill). A 20 km/h wind at −3°C drops the effective temperature below −10°C. The score drops sharply.
Strong Headwind
Sustained headwinds above 30 km/h significantly increase effort and can make running unpleasant regardless of temperature. Plan routes that loop to get the headwind out of the way first.
This is why checking wind speed alone isn't enough — you need to know the temperature context. The Training Conditions Score handles this interaction automatically.
The Go / Modify / Skip Framework
Use this simple framework when the weather looks questionable:
Light rain, moderate wind, or overcast skies. Dress appropriately and train as planned. These are often better conditions than a hot, sunny day.
Steady rain, gusty wind, or cold with wind. Shorten the session, reduce intensity, stay on familiar routes, and carry a phone. Consider indoor alternatives for hard efforts.
Heavy rain, thunderstorms, extreme wind, or dangerous windchill. Move your session indoors or to another day. No workout is worth a safety risk.
The Training Conditions Score gives you this decision in one number — open Aeriqo, see the score, and act accordingly.
Frequently Asked Questions
Is it safe to run in the rain?
Light to moderate rain is safe and can actually improve conditions (cleaner air, cooler temperatures). The risks are slippery surfaces (slow down on turns and hills) and visibility if it's heavy. Thunderstorms are the one absolute no-go.
At what wind speed should I skip outdoor training?
There's no single threshold because temperature matters. In warm weather, even 30+ km/h wind is manageable (and cooling). In cold weather, 20 km/h wind can be dangerous. Check the Training Conditions Score rather than wind speed alone.
Does running in the rain help with air quality?
Yes, often significantly. Rain washes particulate matter (PM2.5, PM10) from the atmosphere. The hours during and immediately after rainfall frequently have the cleanest air quality readings of the day.
What should I wear for running in the rain?
A lightweight, breathable rain jacket (not a heavy waterproof), a brimmed cap, and shoes with good drainage. Avoid cotton — it absorbs water and holds it against your skin. Wool or synthetic base layers wick moisture effectively.
How does the score handle changing weather?
The Training Conditions Score updates in real-time and includes forecast data. If rain is expected to stop in an hour, the forecast window will show improving scores, helping you time your session optimally.
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