Smog Report vs SJVAir

Check your air quality at a glance - anywhere in the world. Smog Report shows real-time AQI data from the EPA AirNow and OpenAQ networks with a design that reflects current conditions — colors, gradients, and atmospheric effects shift based on air quality levels and time of day. FEATURES • Real-time AQI for your location with automatic refresh • On-device AI summaries — plain-English daily assessment plus tailored tips • Forecast outlook commentary when upcoming days warrant attention • Live Activity alerts when air quality changes category • 5-day pollutant forecast with smart expansion for multi-pollutant days • 12-month historical trend chart • Siri shortcuts and saved-location entities • Control Center tile and Action Button shortcut • Apple Watch app with standalone support • Home Screen, Lock Screen, and Control Center widgets • Three panel styles: Glass, Frosted, and Material • Full Light and Dark Mode support • Comprehensive VoiceOver and Dynamic Type accessibility 22 LANGUAGES Available in English (US/UK/Australia), Arabic, Danish, Dutch, Finnish, French (France/Canada), German, Hindi, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Spanish (Spain/Latin America/US), Swedish, and Chinese (Simplified/Traditional). PRIVACY All AI inference runs on-device using Apple Intelligence. No air quality summaries, queries, or personal data are sent to any server beyond the air-quality API request itself. DATA Air quality data is provided by the U.S. EPA AirNow, Singapore NEA, or OpenAQ (a nonprofit aggregator of reference monitors). Air quality values, forecasts, and health messages come directly from official monitoring stations near your location.

Monitor your local air quality in real time! Keep any eye on your local air quality and receive outdoor activity guidelines based on hourly fine particle pollution (PM2.5) concentration. Going out for the day? Enable "Auto Update" in the app's settings menu and get live notifications when you enter hazardous air! Take advantage of real time data with SJVAir's Monitor Map. Utilize the full SJVAir monitor network, as well as viewing AirNow and other PurpleAir monitors that have been deployed in the San Joaquin Valley. View past trends and historical data for every monitor on the map, or download the data to start making your own analysis and infographics!