Can my child play outside?
Heat, humidity, and pollution affect kids differently than adults — timing matters.
Heat & Air Wellness Assistant
Clearer heat and air decisions for your day
HiAir combines heat, humidity, air quality, and personal sensitivity into clear daily guidance — so you can plan walks, workouts, ventilation, and outdoor time with more context.
Wellness guidance only — not medical advice. Available on the App Store. Android is not publicly listed yet.
Sample location · Preview
Moderate risk
Heat31°C
AQI68
PM2.518
Today's guidance
Evening walk looks best after 7 PM when heat drops. Keep windows closed until ozone levels ease this afternoon.
7–9 AM better
7–9 PM best
12–4 PM caution
The gap
Weather apps show data. They don't answer your question.
Most apps tell you the temperature or AQI number — but not whether it's right for you, your child, or your afternoon run.
Should I run tonight?
Ozone and heat index can spike when the sky looks fine. Plans need context.
When should I air the room?
Opening windows at the wrong hour can let smoke or traffic pollution in.
Why does today feel harder?
Combined heat stress and air quality affect breathing comfort — not just one metric.
The solution
One calm view of your personal climate risk
HiAir merges environmental signals with your profile to deliver actionable wellness guidance — without alarmist noise.
Heat & humidity
Heat index and thermal stress tuned to how your body experiences the day.
Air quality layers
AQI, PM2.5, ozone, and smoke signals combined — not shown in isolation.
Personal profile
Sensitivity settings and persona type shape your risk score and tips.
Clear risk score
A single understandable number with explainable reason codes.
Plain recommendations
Hydration, timing, ventilation, and activity guidance in everyday language.
Daily planner
Suggested windows for walks, sport, airing, and family activities.
Personalized risk
From raw data to guidance you can use
HiAir's risk engine weighs environment and personal context — then surfaces what to do next.
Weather + Air
Heat, humidity, AQI, PM2.5, ozone, smoke
Your profile
Sensitivity, persona, daily context
HiAir Risk Score
Low · Moderate · High · Very high
Recommendations
Timing, hydration, ventilation, care tips
Daily planner
Pick the right moment — hour by hour
See when outdoor activity, ventilation, and family plans fit best into your day.
7 AM
Morning walk
12 PM
Avoid peak heat
3 PM
Close windows
7 PM
Evening run
Who it helps
Built for real lives outdoors
Families with children
Plan playground time and school commutes with more heat and air-quality context.
Explore HiAir for families →Asthma & allergy sensitive
Understand combined triggers — not just pollen counts in isolation.
Explore personal context →Runners & cyclists
Find cleaner, cooler windows for outdoor training.
Explore HiAir for runners →Elderly care
Extra clarity for heat stress and air-quality caution during the day.
Outdoor workers
Schedule breaks and hydration around rising thermal and air stress.
Health-conscious residents
Make informed choices about ventilation, commutes, and city living.
Practical guides
Understand the signal before you change the plan
Source-backed explanations for air quality, hot-weather activity and home ventilation.
What does AQI mean?
Learn what the index shows, why national scales differ and what may be behind the number.
Read the AQI guide →Exercise in hot weather
Check timing, intensity, heat and air quality together before an outdoor session.
Plan a workout window →When to open windows
Compare outdoor pollution and temperature with indoor comfort instead of following one fixed rule.
Read the ventilation guide →
Optional wearables
Designed to connect environment with personal wellness patterns
Optional Apple Health and Health Connect access is available after explicit permission. HiAir stores daily and hourly activity summaries, not raw sensor streams, and uses them only as wellness context.
Trust & privacy
Calm guidance. Your data, your control.
Wellness, not medical advice
HiAir supports daily decisions. It does not diagnose, treat, or replace a healthcare professional.
Privacy-first by design
You control location and notification permissions. Export and delete your data in-app.
Minimal data collection
We collect only what's needed to personalize guidance — nothing sold to third parties.
Transparent permissions
Location and alerts are optional. You stay in control of what HiAir can access.
Get HiAir
Download HiAir and check your current conditions
HiAir helps you understand heat and air-quality conditions and plan your day with personalized wellness guidance.
HiAir
Personal heat and air-quality wellness assistant. Available on the App Store for iPhone and iPad.
Android is not publicly listed on Google Play yet.
Questions & answers
No. Weather apps show conditions. HiAir interprets heat, humidity, and air
quality together with your personal sensitivity to suggest better timing and
practical actions for your day.
No. HiAir provides wellness guidance to help you plan daily activities. It
is not a medical device and does not diagnose or treat conditions. For
medical concerns, consult a qualified professional.
Environmental data (heat, humidity, air quality), optional location for
local risk, profile sensitivity settings, and optional wellness logs you
choose to enter. See our
Privacy Policy for details.
Families, athletes, outdoor workers, elderly care partners, and anyone who
wants clearer guidance on heat and air stress — especially if you are
sensitive to pollution or extreme temperatures.
HiAir is available on the
App Store
for iPhone and iPad. Android is not publicly listed yet — use the notify form above if you want an email when it opens.
You can connect Apple Health or Health Connect after an explicit permission
step. HiAir then uses aggregated activity summaries to add wellness context —
not medical diagnosis.