Multiple signals
See heat, humidity, AQI, particles, ozone and smoke when those inputs are available.
Your settings
Use an optional sensitivity profile to shape how the app presents environmental caution.
Honest uncertainty
Unavailable data remains clearly unavailable instead of appearing as a safe zero.
What HiAir does not do
HiAir does not diagnose asthma, allergies or any other condition. It does not replace local public-health alerts, a clinician or emergency services. It helps you organize environmental information for everyday planning.
Start with what AQI can and cannot tell you, then use sensitivity settings in the app as a planning aid — not as a medical threshold.
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 StoreLast reviewed 2026-08-29. Wellness guidance only — not medical advice.