HiAir guides

Make clearer decisions about heat and air quality

Short, practical explanations for the moments when a weather number is not enough. HiAir provides wellness guidance, not diagnosis or emergency advice.

Air quality

AQI explained in plain language

Understand the index, sensitive-group warnings, and why the pollutant behind the number matters.

Read the guide → Outdoor activity

How to plan exercise in hot weather

Use timing, intensity, heat and air quality together before choosing an outdoor workout window.

Read the guide → Home

When should you open the windows?

Compare outdoor pollution and temperature with indoor comfort instead of following one fixed rule.

Read the guide →

Choose your situation

Guidance built around real plans

FamiliesPlan playground time and outdoor routines. Runners & cyclistsFind a more comfortable training window. Air-quality sensitiveUnderstand combined environmental signals.

Personalize the next step

Turn environmental data into a plan for your day

Download HiAir on the App Store. Android is not publicly listed yet — use the Android notify form on the homepage if you want an email when it opens.

Download on the App Store

Last reviewed 2026-08-29. Wellness guidance only — not medical advice.