AirGradient Map vs StormNet

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.

StormNet is optimized to provide the most accurate severe weather forecast with NEXRAD, Super-Res Radar. StormNet is completely free, with no ads. Trained on decades of severe weather events, StormNet analyzes high-resolution radar, satellites, ground-based sensors, and weather forecast models in real-time to find complex patterns that lead to severe weather. The model updates every 2 minutes to provide 14-day forecasts for lightning, hail, damaging thunderstorm winds, and tornadoes. Super-Res Radar is the highest-resolution NEXRAD radar data available from 159 stations across the continental United States. Each radar station updates every 3-4 minutes and measures the intensity of precipitation based on how much energy the radar signal receives back from objects in the atmosphere. Combined, StormNet + Super-Res Radar provides a first-of-its-kind, multiple-component severe weather forecast system for the United States. StormNet Map Overlays • Radar: The highest-resolution radar available for the United States from each radar station. • Radar + Risk: NEXRAD radar, alongside StormNet risk probabilities, for the next 4 hours. • Risk Forecast: The StormNet risk probabilities from real-time to 14 days into the future. StormNet Risk Forecasts • Lightning • Hail • Damaging Winds • Tornado Super-Res (NEXRAD) Radar • Radar Reflectivity • Radar Velocity • Spectrum Width National Weather Service Warnings • Tornado • Severe Thunderstorm • Snow Squall • Flash Flood StormNet vs. National Weather Service The National Weather Service, the Storm Prediction Center, and other government agencies are the official sources for watches, warnings, and severe weather information. StormNet should serve as a trusted and automated guide for severe weather risk, but StormNet should not be treated as an official source. StormNet vs. Traditional Weather Models Existing weather forecast models are incredible feats of engineering and predict the ingredients for severe weather, but they are not designed to excel at severe weather forecasting and are not real-time tools. StormNet was trained and optimized to provide severe weather forecasts. StormNet vs. Other Weather Apps Existing weather apps and companies usually pass along official government watches and warnings, and often communicate if lightning or hail is already close by. While these are valuable features, we are not aware of another weather app or company that matches StormNet’s ability to provide real-time updates for lightning, hail, damaging thunderstorm winds, and tornado risk. Powered by OpenSnow In 2011, OpenSnow began predicting snowfall for skiers and snowboarders. OpenSnow has since become a global leader in mountain weather forecasts and expanded to provide forecasts for every type of outdoor activity. Since lightning is a risk to outdoor activities, especially on longer mountain-based adventures, OpenSnow created a weather forecast system that would provide both lightning forecasts to support real-time decisions and multi-day outlooks to support trip planning. Meteorologist Andrew Brady built StormNet to predict the risk of severe weather. OpenSnow acquired his technology in 2024 to help people stay safe and enjoy the outdoors. — Terms & Conditions — StormNet is free and available in the United States. We'll never track you, sell ads, or collect data. We only ask for your location to show the most accurate radar and severe weather forecast. Full terms and conditions can be found here: https://support.opensnow.com/legal/terms | https://support.opensnow.com/legal/privacy