This app provides a 72-hour forecast of wildfire smoke and air quality, hour by hour. It uses EPA monitor data to correct NOAA's forecast, showing you where smoke is and when it will clear. Plan outdoor activities and protect your health by knowing current and future air conditions.
1.4
September 16, 2026
Overnight is now its own alert. Turn it on for the place where you sleep and pick a level. From 9 PM to 7 AM, you'll be alerted when the nearest air monitor reads above it, so you can close windows or turn on an air purifier. The Home Screen widget has its own row at the bottom of the app with the steps to add it. Each place's alerts button is now labelled, Notifications shows which places have Overnight on, and the alert sliders name the EPA air quality categories in full. Also: turning on alerts from a place now turns that place on, the star asks before removing a favorite, "Use my current location" recognizes a saved city, and the app is ready for iOS 27.
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SmokeCast is a free weather app that provides hourly wildfire smoke and air quality forecasts for the next 72 hours. It corrects NOAA's forecast using live data from EPA air monitors to offer more accurate predictions.
SmokeCast corrects NOAA's raw model, which typically misses by 12.1 AQI points. SmokeCast's corrected forecasts have recently shown a typical miss of about 8.9 AQI points, with 88% of forecasts within 25 points of measured values.
No, SmokeCast is completely ad-free. It also does not require an account or track your location, offering a private and uninterrupted user experience.
SmokeCast is available for iPhone and iPod devices. It requires iOS 4+ and is designed for users who need to plan around wildfire smoke.
A fresh scorecard for SmokeCast's forecast accuracy is posted every night at smokecast.org/accuracy.html. The app itself was last updated on September 16, 2026, to version 1.4.
Yes, you can save your favorite places within SmokeCast. This allows you to quickly check the air quality at a glance for locations important to you, such as trailheads or campsites.
No, SmokeCast is an independent planning tool and not an official air-quality forecast, emergency warning service, or medical advice. For critical safety and health decisions, it is recommended to follow local authorities and your clinician.
SmokeCast has an age rating of 4+, making it suitable for a wide range of users concerned about air quality and wildfire smoke.
