Local Haze vs AirGradient Map

Local Haze crowdsources outdoor air quality data from many different sources and delivers it to your iPhone and Apple Watch. In release 2.3, as a Local Haze subscriber, you can now get air quality readings “at a glance” on your Apple Watch, widgets on your phone, and notifications for a sensor where significant changes in air quality have been detected. About Local Haze Local Haze reports air quality data from a variety of sensors across six continents, including AirGradient, AirNow, PurpleAir, Sensor.Community and uRADMonitor. In addition to viewing current air quality conditions, using Local Haze allows you to share sensor maps displaying air quality readings anywhere in the world. The World Health Organization and the U.S. Environmental Protection Agency (EPA) have developed guidelines for safe air quality as impacted by chemical pollutants and particulate matter (PM). PM smaller than 10 micrometers poses problems because it can enter the bloodstream. Local Haze displays the level of smaller PM 2.5 particles, which pose the most significant health risk. Local Haze Apple Watch app If you have disabled Automatic App Install on your Apple Watch, you can follow these directions to manually install it: https://support.apple.com/en-ca/guide/watch/apd99e3c6a68/watchos Local Haze Widgets A Local Haze widget allows subscribers, at a glance, to see a snapshot of their favorite AQ sensor. A tap on the widget displays the Local Haze sensor details screen. For directions on how to add a widget, visit this page: https://localhaze.humanlogic.com/2023/07/22/adding-a-local-haze-widget/ Notifications in Local Haze To set a notification, subscribers can tap the bell icon on the sensor details screen. Notifications will be sent to your phone when the air quality changes. How Local Haze Displays Air Quality Data Local Haze displays the EPA’s Air Quality Index (AQI) and a confidence rating for each sensor reading. The confidence rating is a feature that is unique to Local Haze and depends on many factors, including sensor maintenance and data freshness. Each AQ sensor reading is displayed as a face icon according to the key below, with a badge on the lower right that represents a confidence rating: Green Face: Air quality is Good. Air quality is considered satisfactory, and air pollution poses little or no risk. Yellow Face: Air quality is Moderate. Air quality is acceptable. For some pollutants, there may 
be a moderate health concern. Orange Face: Air quality is Unhealthy for sensitive groups. The general public is not likely to be affected, but people with heart and lung disease, older adults, and children are at greater risk. Red Face: Air quality is Unhealthy Everyone may begin to experience some adverse health effects, and members of the sensitive groups may experience more serious effects. Black face mask with respirator: Air quality is Hazardous. Everyone may experience more serious health effects with possible emergency conditions. The entire population is likely to be affected. Note: The source for the above AQ index classification is from Air Quality Index (AQI) Basics - EPA: https://www.airnow.gov/aqi/aqi-basics/ The confidence rating badges are: Green badge with thumbs up: High confidence in the air sensor reading. Yellow badge with OK sign: OK confidence in the air sensor reading. Red badge with thumbs down: Low confidence in the air sensor reading. We hope you enjoy using Local Haze! If you have any feedback about Local Haze please email us at localhaze@humanlogic.com or visit https://localhaze.humanlogic.com/

Accurate, actionable air quality in real time. Know your local AQI and PM2.5 with clear steps to plan your day and reduce exposure. What you get: - Live map with AQI and PM2.5 for places you care about - Alerts when air quality changes at your saved locations - Global coverage in nearly all countries - Simple, science-based guidance on what to do next - Home and Lock Screen widgets for glanceable AQI - Offline-aware status for uninterrupted awareness - Tips and guidance in the in-app Blog - Localized experience in English, Arabic, Chinese (Simplified), French, German, Hindi, Indonesian, Khmer, Lao, Spanish, Thai, and Vietnamese Make better decisions every day: - Reduce exposure during smoke or smog events - Time workouts and outdoor plans with confidence - Protect kids, elders, and sensitive groups - Travel confidently with saved places and alerts Data you can trust: - Shows air quality from trusted reference stations and AirGradient monitors worldwide - Built on established air quality standards with transparent, science-informed methods Built by AirGradient: - Created by AirGradient, a social-impact business with a strong scientific background - The team behind open-source air quality monitors used by schools, researchers, and communities globally - Our mission: raise awareness of the dangers of air pollution and empower action - We work with small grassroots organizations and major international organizations like UNICEF and UNDP, and with leading universities such as the University of Cambridge Community and impact: - Featuring communities from around the world, fighting air pollution together - Read real stories, learn what works, and take action locally - Join a global movement to improve the air we all share Design and performance: - Optimized for iOS 26 with a liquid glass UI - Smooth interactions, refined haptics, and fast updates - Thoughtful accessibility support for larger text and VoiceOver Privacy and control: - Location is optional - search and save places manually if you prefer - Clear settings and easy controls to manage alerts and data Quick definitions: - AQI: Air Quality Index, a simple scale for overall air quality - PM2.5: Fine particles (≤2.5µm) that can affect heart and lung health Get the air quality that matters to you - accurate, timely, and easy to act on. Disclaimer: This app provides informational guidance only and is not a medical device or medical advice.