Weather apps for spotters: clouds, visibility, wind and METAR at a glance

The weather report on the radio says “changeable,” the standard app on your phone shows a sun with a cloud, and at the fence you end up standing in drizzle under a gray blanket. For plane spotters the classic weather symbol is too coarse. You want to know which direction the wind blows from at the airport, whether the clouds are low or high, when the next shower passes through and what the airport itself is reporting right now. This comparison shows you which weather apps for spotters answer which of these questions best – and how to build a small, lean set from them.

The short answer

The one perfect weather app for spotters doesn’t exist. A set of four building blocks has proven itself: a map app for wind and the large-scale weather pattern (such as Windy or Ventusky), an app with clouds by altitude layer (meteoblue or Clear Outside), a rain radar for the next one to two hours (RainViewer or the full version of the DWD WarnWetter app) and a source for METAR and TAF (AeroWeather or the Aviation Weather Center in the browser). That covers runway direction, light, showers and the actual situation at the field.

More important than the choice of apps is the order: several days ahead you look at the large-scale pattern, the day before at wind and clouds hour by hour, and on spotting day itself at METAR, TAF and radar. The model forecast sets the direction, and the reports from the airport have the final say in the end.

What spotters really need to know about the weather

Before you compare apps, it’s worth looking at which values actually make the difference on a spotting day. There are fewer than the many map layers of modern weather services suggest.

• Surface wind at the airport: Aircraft prefer to take off and land into the wind. The direction and strength of the wind near the ground therefore decide the runway direction in use and with it your spot. The guide Understanding runway direction at airports explains the connections.
• Clouds by altitude: Low, dense clouds take away your light, while thin high veils often hardly do. The plain percentage of total cloud cover helps you little.
• Visibility and haze: For long-focal-length photos across the runway, every bit of haze in the air counts. Morning fog can cost you a whole morning.
• Precipitation and thunderstorms: Showers can be tracked well in the short term with radar. With thunderstorms it’s not just about pictures, but about your safety in open country.
• Temperature: On hot days the heated asphalt causes heat shimmer, which blurs detail at a distance. How to deal with it is in the article Avoiding heat haze.

For each of these points there is an app that presents it especially well. The following comparison is sorted by exactly that.

The apps in profile

Windy: the weather map for wind and the large-scale pattern

Windy is the best-known weather map among spotters. The service from Prague presents the results of several weather models as animated maps, including the global models ECMWF, GFS and ICON as well as high-resolution regional models. Of interest to spotters are the layers for wind and gusts, clouds, visibility and precipitation, as well as the ability to search for an airport by ICAO or IATA code and see METAR and TAF there. The basic features are free; premium brings finer time steps, among other things.

Windy is strong when you want to know several days ahead whether a westerly pattern with strong wind is coming or whether a high with weak, shifting wind is settling in. How to read wind arrows, particles and model comparisons correctly is described in the detailed guide Windy & co. for spotters.

Ventusky: the alternative with a clear map look

Ventusky is developed by the Czech meteorology company InMeteo from Pilsen. The idea is similar to Windy: animated maps for wind, temperature, clouds and precipitation based on various models, including ECMWF, GFS, ICON and the Canadian GEM. As its main data suppliers, Ventusky names the German Weather Service and the US agency NOAA. There is a premium variant with extra features.

For spotters Ventusky is mostly a matter of taste. If you don’t warm to the Windy interface, you’ll find a tidy alternative here for keeping wind direction and fronts in view. A second map service is also worthwhile as a cross-check, though: if both show strong easterly wind for tomorrow, you can rely on it more.

meteoblue: meteogram and model comparison

meteoblue AG is a Swiss weather service, founded in 2006, whose roots lie in research at the University of Basel. For spotters the meteogram is of particular interest: a graphic for one location that shows clouds in different altitude layers, temperature, precipitation and wind over time. There is also a model comparison with which you see how far apart different weather models are for your location. Radar, satellite, wind map and warnings round out the offering in the browser and in the app.

The big advantage: you enter the airport as the location and see at a glance whether low clouds will hold tomorrow morning and when they will clear. If the models diverge strongly, that is a clear signal to have a backup plan.

Clear Outside: cloud layers from astronomy

Clear Outside comes from First Light Optics, an astronomy retailer from Exeter, and was originally built for stargazers. That is exactly what makes the app so useful for photographers: it shows hourly and for up to seven days the low, mid-level and high cloud cover separately, plus visibility, fog, precipitation, wind, temperature, dew point and sunrise and sunset. A traffic-light system summarizes the conditions. The website and apps for iOS and Android are free.

The traffic light refers to stargazing, not aircraft photos – so you’re better off reading the individual layers. A row with a lot of high cloud but hardly any low clouds often means filtered, soft light instead of gray on gray. For the direction of the light itself you need a sun position tool; the article Sun position apps for photographers gives an overview, and how to plan the sun position for a photo spot is shown in the guide Planning the sun position at your photo spot.

RainViewer: rain radar with a short-term forecast

RainViewer is a pure radar app. By its own account it pools data from weather radars in over 90 countries and queries the radar servers every few minutes. The free version offers, among other things, a short-term forecast for the next half hour, a radar loop over several hours and a model forecast for the day. Paid tiers extend the forecast and radar loop and bring notifications with custom thresholds.

On shower days, a radar is the most important tool of all for spotters. If you see a rain cell moving toward the airport, you know whether you still have twenty minutes for the next approach or should head to the car right away. After the shower, by the way, often come the best pictures: clear air, a dramatic sky, reflections on a wet runway. More on this in the guide Plane spotting in bad weather.

DWD WarnWetter: official warnings for Germany

The WarnWetter app of the German Weather Service (Deutscher Wetterdienst, DWD) is free in its basic version and delivers official warnings with push notifications for your location – for example for thunderstorms, gale gusts or black ice. With a one-time in-app purchase you unlock the full version, which adds precipitation radar, forecasts and current measurements.

For spotters in Germany the app is above all a safety feature. In open country next to the runway there is hardly any shelter in a thunderstorm, and warnings of gale gusts are also relevant for your gear, such as a tall tripod or a ladder at the fence.

AeroWeather and the Aviation Weather Center: METAR and TAF

For the weather right at the airport there are specialized aviation weather apps. AeroWeather from Lakehorn AG loads METAR and TAF for a great many airports, either as raw text or translated into plain language. You arrange your airports in groups, and a toolbox includes, among other things, a calculator for wind components. The app is available for iOS, Android and macOS; extra features cost extra.

It also works without an app: the Aviation Weather Center of the US weather service provides METAR and TAF in the browser, also for airports outside the USA. You enter the ICAO code – EDDH for Hamburg, EDDF for Frankfurt, EDDM for Munich – and get the reports raw or decoded. Still, learn to read the raw report; the guide Reading METAR and TAF explains every group.

On the side: with the DWD FlugWetter app, the German Weather Service also runs an offering aimed specifically at aviation. However, it requires a paid subscription to the pc_met aviation weather service and is aimed at pilots, not hobby spotters.

The comparison at a glance

App	Provider	Strength for spotters	Clouds by altitude	METAR/TAF	Free to use
Windy	Windy.com, Prague	Wind, gusts, model comparison, large-scale pattern	yes, as map layers	yes, in the airport view	yes, premium optional
Ventusky	InMeteo, Pilsen	animated wind and cloud maps	as map layers	no	yes, premium optional
meteoblue	meteoblue AG, Switzerland	Meteogram, model comparison for one location	yes, in the meteogram	no	yes
Clear Outside	First Light Optics, Exeter	hourly cloud layers, visibility, fog	yes, low/mid/high separately	no	yes
RainViewer	RainViewer	Radar and short-term forecast	no	no	yes, paid tiers optional
DWD WarnWetter	German Weather Service	official warnings, radar in the full version	no	no	warnings yes, full version via one-time purchase
AeroWeather	Lakehorn AG	METAR and TAF, raw and in plain language	via METAR cloud groups	yes	basic features, extra features paid
Aviation Weather Center	NOAA/NWS, USA	METAR and TAF in the browser	via METAR cloud groups	yes	yes

Subscription models and feature sets change regularly. Before buying, check the current description in the App Store or on Google Play – this article is current as of October 2026.

Why the standard weather app isn’t enough

The weather app preinstalled on your smartphone is made for everyday life: umbrella or not, jacket or T-shirt. For spotters it has three weaknesses.

• Wrong place: Many apps compute for a city or a district. Airports are often outside town in open country, where ground fog lasts longer and the wind blows harder.
• Clouds too coarse: A “cloudy” symbol doesn’t distinguish between a dense high fog layer and thin veil clouds. For your light, though, that is the decisive difference.
• No relation to the runway: Wind direction is often shown only as an arrow or compass direction, without you seeing whether it is across or along the runway. What crosswind means for landings is explained in the article Filming crosswind landings and storms.

That doesn’t mean you have to delete the standard app. It’s just not the source you set an early alarm by.

Which set suits you?

How to combine the apps in a routine

With fixed steps, the weather check for a spotting day takes only a few minutes.

An example from Hamburg: Hamburg Airport has two crossing runways, 05/23 and 15/33. If the map apps show wind from westerly directions for the next day, a lot speaks for the common configuration with landings on 23 and takeoffs on 33 – then departing aircraft taxi right past the Affenfelsen. Which runways air traffic control actually uses, however, also depends on noise abatement rules and visibility. What the runway numbers mean is in the article Runway designations at airports. In the morning the METAR confirms or refutes your assumption.

Common mistakes in the weather check

• Looking only at the symbol. A cloud symbol says nothing about whether the sun shines through thin veils. Read the layers.
• Reading upper-level wind instead of surface wind. In map apps an upper-level layer is quickly set. For the runway direction, the surface counts.
• Forgetting UTC. METAR and TAF use UTC. In German summer time you add two hours, in winter one.
• Trusting one model blindly. If the models diverge, the situation is uncertain. Then plan a backup spot or a later decision.
• Ignoring thunderstorm warnings. At the open fence you are exposed to lightning. In a thunderstorm, the camera and you belong in the car.

If you’re out in winter, also watch for fog, black ice and the dew point spread in the METAR – more on this in the guide Plane spotting in winter. And if the weather at your desired airport doesn’t cooperate, a look at live airport webcams is often worthwhile to see the situation on site for yourself.

Conclusion

Spotter weather consists of four questions: where does the wind come from at the airport, how high are the clouds, when will it rain, and what is the field reporting right now. Map services such as Windy and Ventusky answer the first question, meteoblue and Clear Outside the second, RainViewer and the WarnWetter app the third, and METAR and TAF via AeroWeather or the Aviation Weather Center the fourth. Most apps are free in their basic version – what matters is that you use them in the right order and, on spotting day, put the real reports above the model forecast. Which spotting and tracking apps complement the set is shown by the comparisons Plane spotting apps and Flight tracker apps.