New: worldwide air quality with the right local index — DAQI in the UK, EAQI in Europe, PSI in Singapore, AQHI in Canada, and more.
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 EPA AirNow 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.
This app is great. I live in Southern California and am in that group of "highly sensitive individuals" affected by air quality. Fascinating and useful to have data on, for example, which cities are most affected by recent forest fires. The Air Quality Index of mine is 139. No wonder I'm wheezing. Where to go? I check the cities close by. 120s-130s. Check my cousin's city, 40 miles away. AQI only 79. Better! I check the coast. AQI a mere 50! Do I hear a mini-vacation calling?Love the leaf symbols to indicate health points. Green is great, going to green with yellow edge, yellow, yellow with red edge, red. Great visual. A minor annoyance: If you put a lot of cities on your list, it takes a long time to see data on any one of them, and you're blocked from doing anything about it. I'd rather see the current one ASAP, because usually I don't care about the others. Or, I want to be able to access the list of cities so I can just delete some, to have the rest load faster (sometimes I like to look at the cities where my siblings live, just for grins--but not when I'm trying to get local data quickly).
Simplistic
ZabaraH
Simple, easy to use format. Gives me needed up to date information. I purchased this app as an easy way to find areas with safe particulate levels suitable for strenuous outside exercise. It was especially valuable when our area was experiencing various levels of smoke due to wildland fires.
Great air quality app
NorthernNeck
I have only good things to say about this app. It uses an easily understood system for rating air quality and gives accurate up-to-date information when compared to other data. I appreciate being able to look at a variety of US cities, too. Thanks for making a visually appealing, helpful air quality app!
Great app
Aurora Socal
Has been accurate so far very great and reliable
v2.6.1 — Worldwide Air Quality
This is our biggest release ever. Smog Report now works in ~100 countries with reference-grade monitor data, and displays the air-quality index your country actually uses.
WORLDWIDE COVERAGE via OpenAQ (worldwide) + Singapore NEA (Singapore) alongside EPA AirNow (U.S.).
THE RIGHT LOCAL INDEX, AUTOMATICALLY
• U.S. → U.S. EPA AQI
• UK → DAQI (1–10)
• EU → European Common AQI (1–6)
• Canada → AQHI
• Singapore → PSI
• India → NAQI
• Korea → CAI
• Australia / New Zealand → AU AQI
You can also pick any scale from Settings → AQI Scale.
22 LANGUAGES
The full app, widgets, Live Activities, and Apple Watch app are now translated into 22 languages including Arabic, Chinese (Simplified + Traditional), French (France + Canada), German, Hindi, Japanese, Korean, Portuguese (Brazil), Spanish (Spain + Latin America), Swedish, and more.
OTHER IMPROVEMENTS
• AQI gauge now displays your selected scale's native value (no more clamping non-US data to the EPA scale).
• Settings → AQI Scale lets you override the country default.
• Pollutant names are localized.
• Live Activities and widgets all pick up the active scale.
• Background refresh routes through whichever data source matches each saved location's country.
PRIVACY (unchanged)
Your location is sent only to the data source for your country (AirNow / OpenAQ / Singapore NEA), never to a server we operate. No account, no tracking SDK.
Version 2.6.1
The developer, Matthew Baylis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Location
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Voice Control
Larger Text
Dark Interface
Sufficient Contrast
Reduced Motion
Information
Seller
Matthew Baylis
Size
12.2 MB
Category
Weather
Compatibility
Requires iOS 26.4 or later.
iPhone Requires iOS 26.4 or later.
iPad Requires iPadOS 26.4 or later.
Mac Requires macOS 26.4 or later and a Mac with Apple M1 chip or later.