Real-time, reference-grade air quality across ~100 countries — automatically showing the right local index for wherever you are: DAQI (UK), EAQI (Europe), AQHI (Canada), PSI (Singapore), NAQI (India), CAI (Korea), AU AQI, or US EPA AQI. With on-device Apple Intelligence summaries and Lock Screen alerts for every location you save.
Smog Report combines EPA AirNow (US), OpenAQ (~100 countries worldwide), and national agencies like Singapore's NEA into one localized iPhone experience.
Get live air quality index readings updated continuously so you always know current conditions.
EPA AirNow in the US, OpenAQ across ~100 countries, plus direct feeds from agencies like Singapore NEA — only reference monitors, no consumer sensors.
Save the places you care about — home, work, family — and the closest one wins when alerts arrive.
Live Activities surface harmful-AQI alerts on your Lock Screen — even when the app is closed.
A clean, intuitive interface designed to give you the information you need at a glance.
New to AQI? Start with Understanding AQI. Living through wildfire smoke? See Wildfire Smoke. Curious how the data gets to your phone? Read How AirNow Data Works.
Get Smog Report free from the App Store. No account or sign-up required.
Enable location access so we can find the nearest reference-grade monitor — EPA AirNow in the US, OpenAQ or a national agency elsewhere.
Instantly see your local air quality index with forecasts and health guidance.
Join thousands of users who check Smog Report before heading outside. Free on the App Store.
Download for iOS