How to Check Air Quality Near You in 2026 (5 Ways)

To check the air quality near you, the most reliable option is your national monitoring service: AirNow in the US, or the European Air Quality Index in Europe, both free on the web and in their own apps. For a faster daily check, an app on your phone brings the reading to you: your built-in weather app shows a basic AQI on iPhone, and a dedicated app like Skyvo forecasts it and pairs it with the UV index. Here are five ways, starting with the official sources, and how to tell which to trust when they disagree.

If you want a refresher on what the numbers and colors actually mean, our AQI scale guide breaks the bands down. This post is about where to get the reading.

1. Your national air quality service (the official source)

Start here. Your government’s monitoring network is the most authoritative reading, and it is free. These are the numbers every other tool is measured against.

In the US, that is AirNow, which the EPA describes as a partnership of the US Environmental Protection Agency, NOAA, the National Park Service, NASA, the CDC, and state, local, and tribal air agencies. It publishes current and forecast air quality for more than 500 US cities, with a free AirNow app and an interactive map you can zoom from the national picture down to a single monitor.

In Europe, the equivalent is the European Air Quality Index (EAQI), published by the European Environment Agency. It reports the air on six named bands, from Good to Extremely Poor, updated hourly and set by whichever pollutant is worst.

Most countries run their own official service too, from the UK’s DEFRA to environment agencies across Asia and the Americas. Whatever tool you use day to day, this is the source of record: when readings disagree, the government monitor is the tiebreaker.

2. A community sensor map like PurpleAir (the hyperlocal option)

Official monitors are accurate but sparse: there may not be one on your side of town. That is where community sensors come in.

PurpleAir is a network of about 35,000 low-cost sensors around the world, many of them installed by ordinary people at their homes, reporting real-time PM2.5 to a free public map at map.purpleair.com. Because the sensors are dense, you can see how your exact street compares to the one a mile away, which a distant government monitor cannot show you.

The tradeoff: low-cost sensors are less precise than regulatory monitors and tend to read high in heavy wildfire smoke. Use PurpleAir for hyperlocal texture, and lean on the official AirNow or EEA reading for the authoritative number.

3. A world map like the World Air Quality Index (for travel)

When you are away from home, the easiest way to check anywhere is a global map that gathers the official data in one place. The World Air Quality Index (aqicn.org) is a free, non-commercial project that collects real-time readings from thousands of official government monitoring stations worldwide onto a single map. It is the same regulatory-grade data as method 1, just pooled globally, which makes it handy for a quick look at a city you do not live in.

4. Your phone’s built-in weather app (convenient, but limited)

If you have an iPhone, you already have an air quality reading in your pocket. In supported regions, Apple’s Weather app shows an air quality index for your location. It costs nothing, it is already installed, and it is fine for a quick glance.

Be honest with yourself about what it is, though: a general weather app where air quality is one card among many. Coverage depends on your region, so the AQI simply will not appear in some places. It shows a single scale with no option to switch between the US AQI and the European index, it does not pair the air with the UV index for a single “should I go out?” answer, and there is no Android version. It tells you the number when you open it; it is not built to help you plan around the air.

5. A dedicated UV and air quality app (the one we recommend)

Every option above does one piece of the job. The reason we built Skyvo was to do all of it in one place, and it is the option we recommend for everyday use.

Skyvo is a complete sun-and-air companion. It shows your local air quality on whichever scale you prefer, the US AQI or the European EAQI (you choose once in Settings), and puts it right next to the UV index, so a single glance answers the question that actually matters: is it safe to go out right now? It forecasts both the air and the UV hour by hour and seven days ahead, not just the current number. It tailors burn times and sun advice to your skin type. And it sends a morning summary, so a bad-air or high-UV day reaches you before you head out, not halfway through the run. It works on both iPhone and Android.

That is the difference between glancing at a number and actually knowing your day. Official sources give you the raw reading and a general weather app buries it in one card, but Skyvo is built to turn UV and air quality into a decision. If you install one thing from this list, make it this one. Download Skyvo free on iPhone and Android.

Which source should you trust when they disagree?

It is normal for two sources to show different numbers for the “same” air. Here is how to read the conflict:

• The government monitor is the reference. AirNow and the EEA use regulatory-grade equipment, so treat their reading as the baseline of record.
• Community sensors add local detail, not final authority. A PurpleAir reading that differs from the official one usually means genuine hyperlocal variation, or the sensor running a little high, not that the government is wrong.
• Check the scale and the source. A big gap between two apps is often just the US AQI versus the European EAQI, or one app reading a nearer sensor. Our US AQI vs. European index guide explains why the same air lands in different categories on each scale.

Method	Best for	Coverage	Cost
National service (AirNow, EAQI)	The authoritative, official reading	US / Europe (most countries)	Free
PurpleAir map	Hyperlocal, street-level detail	~35,000 sensors worldwide	Free to view
World Air Quality Index map	Checking anywhere while traveling	Official stations worldwide	Free
Built-in Weather app	A quick glance you already have	Supported regions, iPhone only	Free
Dedicated app (Skyvo)	A daily habit: forecast, UV, a morning heads-up	iPhone and Android	Free tier

How to actually use the reading

Checking the number is only useful if it changes your plan. The habit worth building is a quick look before you commit to time outside, especially a run, a long walk, or anything with kids or older relatives: green and yellow, go; orange, sensitive people ease off; red and above, move it indoors or reschedule.

One last caveat: every source above measures the outdoor air. The EPA notes that levels of some pollutants run 2 to 5 times higher indoors than out, and that we spend about 90% of our time inside, so a home monitor is worth it if indoor air is your concern. For everything outdoors, that “check before you head out” habit, pairing air quality with the UV index in one place, is exactly what Skyvo is built for, and the simplest way to make it automatic.