Set your fitness baseline
Enter a recent 5K benchmark or, with permission, use running history from Apple Health to estimate VDOT-derived training ranges.
YOUR CURRENT FITNESSBuilt for runners, not record keeping
Run the effort.
Let the weather set the pace.
Climate Pace turns temperature, humidity, dew point, and air quality into a clearer pace expectation—before you head out and after the run is done.
- ✓ Apple Health read-only
- ✓ No run recording
- ✓ VDOT-derived pace estimates
● Humidity 68%
● Dew point 70°
GOOD MORNINGPlan today’s run
DH
INTENDED EFFORTEasy run
82°
RUN CONDITIONSDemanding
●68%humidity
♧70°dew point
◉74AQI · Moderate
↗
EASY · PREVIEWSame effort, different pace
Your normal range9:34–10:35/mi
→
Today’s range10:05–11:09/mi
Conditions change the number—not the workout
Your watch tells you what happened.
Climate Pace helps explain why it felt that way.
Keep recording with the tools you already trust. Climate Pace is the calm layer between your training plan and the conditions outside.
How it works
Three inputs.
One useful answer.
Choose the planned effort
Recovery, easy, long run, steady, tempo, intervals, or speed—because weather doesn’t affect every workout the same way.
YOUR INTENTSee the pace translation
Compare your normal range with an estimated climate-adjusted range while keeping the intended effort front and center.
TODAY’S EXPECTATIONInside the app
More than a weather number.
A better way to plan the run.
From choosing the best hour to understanding yesterday’s effort, every screen is designed to answer one practical runner question.
01
Plan the window
See when the same run will cost less.
Hourly conditions translate into pace cost, AQI, and a recommended window—so “run before it gets hot” becomes an actual decision.
- Hourly and seven-day views
- Normal vs. adjusted pace for the selected hour
- Plain-language timing recommendations
RUNNING CONDITIONSOutlook
Hourly today7 days
Lowest combined heat + air-quality burden · +12 sec/mi
6 AM72°+12AQI 42
8 AM76°+17AQI 48
10 AM82°+23AQI 74
12 PM87°+31AQI 88
SELECTED HOUR8 AM · Fair+17 SEC/MI
Normal easy pace9:35–10:30
Adjusted easy pace9:52–10:47
Temperature / dew76° / 67°
AQI / expected RPE48 / 3
☀ 82°DemandingAQI 74
VDOT-DERIVED · 24:30 5K BASELINE
Normal vs. today.
Normal pace first. Climate-adjusted pace beneath it.
1Easy / recoveryComfortable conversationNORMAL9:35–10:30TODAY9:56–10:51RPE 2–3
2Long-run effortRelaxed enduranceNORMAL9:11–9:52TODAY9:32–10:13RPE 3–4
3Steady effortMarathon-like rhythmNORMAL8:38TODAY8:59RPE 5–6
4Threshold effortControlled, comfortably hardNORMAL8:09TODAY8:30RPE 7
5VO₂ intervalsHard 3–5 minute repeatsNORMAL7:30TODAY7:51RPE 8–9
02
Keep the workout honest
One climate adjustment, every training effort.
Your VDOT-derived guide keeps normal pace, today’s pace, and target RPE together—from recovery running through speed repetitions.
INTENDED EFFORTEasy / RecoveryChange
EasyLongSteadyTempoIntervals
EASY / RECOVERY · PREVIEWSame effort, different pace3/4
Your normal pace9:35–10:30/mi→Preview pace9:56–10:51/mi
03
Understand the result
Translate a completed run without rewriting it.
See conditions at the start, average, and maximum—then compare the recorded pace with ideal or custom conditions using transparent sliders.
- Imported from Apple Health, never recorded here
- Actual conditions preserved with the run
- Ideal and custom comparison modes
↻
SYNCED FROM APPLE HEALTH · EASY RUNRecorded 9:21 /mi
Recorded 9:21 /mi
equals 9:00 /mi.
Equivalent pace in ideal conditions.
RECORDED PACE9:21/mi→IDEAL-EQUIVALENT9:00/mi
STARTAVGMAX
Temperature78°82°86°
Humidity72%68%72%
Dew point68°70°71°
AQI617482
After the run
See the effort behind the pace.
Imported-run insights compare what you recorded with what the same effort may have looked like in ideal—or custom—conditions.
- 01Conditions at run timeStart, average, and maximum temperature, humidity, dew point, and AQI.
- 02Recorded vs. equivalent paceTranslate the run without rewriting the result.
- 03Explore custom conditionsAdjust the comparison and understand which factors change the estimate.
IMPORTED FROM APPLE HEALTH · EASY RUN
Recorded 9:21/mi
Recorded 9:21/mi
felt like 8:44/mi.
Compared with ideal running conditions.
RECORDED PACE9:21/mi
→
IDEAL EQUIVALENT8:44/mi
82° start84° average88° max
Built with restraint
The useful layer.
Nothing extra.
Not another recorder
Use Apple Workout, Garmin, Strava, or your preferred running app. Climate Pace reads permitted history; it never starts a workout.
AQI stays a warning
Air quality changes guidance, not pace arithmetic. Slowing down does not make unhealthy air safe.
Estimates stay estimates
Model versions and uncertainty remain visible. Climate Pace explains assumptions instead of pretending conditions are perfectly predictable.
Your health data stays yours
Apple Health access is read-only and optional. Manual benchmarks and conditions keep the core experience available without a connection.
Private iPhone beta
Make peace with the pace.
Join the early list for product updates and an invitation when TestFlight access opens.
Good questions
Before you lace up.
Does Climate Pace record my run?+
No. Continue recording with Apple Workout, Garmin, Strava, or another app. Climate Pace is for planning and interpreting climate effects.
Where do the normal pace ranges come from?+
They are VDOT-derived training pace estimates based on a recent race benchmark or a fitness baseline you confirm. They are guidance, not an official prescription or race prediction.
Does poor air quality just make the recommended pace slower?+
No. AQI is treated separately as a health warning. The app will never imply that running slower makes unhealthy air safe.
What if I do not connect Apple Health?+
You can enter a benchmark manually and preview conditions yourself. Health access is optional and read-only.
Is the adjustment exact?+
No. Heat response varies by runner, duration, acclimation, route, sun, and other factors. Climate Pace presents an estimate and its assumptions rather than a guarantee.