Weather or not

What is the best real weather add on please. Opinions ??

Depends on what you are trying to achieve.

Thanks. an acurate as possible live weather program is what I was hoping for.

Again, it may depend on what you mean by ‘accuracy’. As of now, you have a choice between using the stock ‘live’ weather, which when it is working (it does most of the time for me) makes a pretty good effort at modelling large-scale weather systems (though there are issues with it), and mods which inject local METAR data into a large scale model, with the intention of duplicating real live METAR more accurately. Which is fine up to a point, but inevitably leads to discontinuities as you move from ‘local METAR’ to the bigger model. And METARs aren’t live data anyway - they are records of what the weather was doing when the observations were made.

Personally, I’m happy with the stock weather, or at least prefer being able to see changes in weather coming visually. Other people seem to want METAR-matching, and can put up with the issues it raises.

Note that despite what some on this forum have claimed, it isn’t actually possible to duplicate real-world weather in real time, for several reasons - most notably because the data doesn’t exist. ALL large-scale weather sources use models to ‘fill in’ for data they don’t have, and METARs are no use when you are half way across the Pacific, at 35,000 ft. Other data may be available, but again, it won’t be ‘live’. Weather changes between observations: if it didn’t the meteorologists wouldn’t need to model it…


@ Scotlyn2044



I think there’s only REX currently. Even then, it’s a bit iffy too, there has been a recent update allegedly fixing the frame rate issues however.

The native one! There is NO NEED for an external weather addon!


Yes, there is a urgent need to a better real or live weather solution. Do my a favor. Go to SEQM airport, select the MSFS live weather option and now compare the indicated OAT and QNH (pressing B) that you get versus the actual METAR for SEQM. And tell me about the horrendous difference that you get always, guaranteed… now tell me how are you gonna handle that? I bet you are saying you don’t need a weather solutions because you are just happy looking at the shapes of the clouds and have no idea what I am talking about, are you?


Agree, no other than internal weather system but user asked about Addon :wink:

Any addon that I can type the airport ICAO and retrieve the current METAR from MSFS? I often need to plan my approach mid flight and depend on weather information of my destination. The appropriate way would be to use the MCDU (A320) but most pages/functions are not implemented. Tuning in the ATIS frequency does not work. Nearest airport is not an option as well.

I could easily get the METAR from external sources but as you guessed, they are very different from the MSFS one.

@ CaptClarence125

With respect if your avatar points to your identity,

he ask about weather addon, next to internal weather system :wink:

Yup. One of the more obvious flaws with MSFS stock live weather modelling is that it totally screws up temperatures for high-altitude airports, and over high terrain in general.

I’m not sure how well the paid-for alternative, REX, handles this though. Where does it get its outside-of-METAR-range weather from? and does it suffer from the same issue?

That is a pretty valuable observation actually. Here in the Netherlands/Belgium the weather usually is quite spot-on. But I can imagine they failed to correct for airport elevation in their weather model.

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As someone mentioned, there is REX Weather Force, around 20 bucks depending on your currency.
I’m so far happy with. Not impressed, but happy enough to be sure I have the most accurate metar weather available wherever I fly.
It also tells you which metar is reading, and you can check the metar at any location.
Not affiliated in any way with the product, just my 2 cents.

Edit: you may not need this at all if you are happy with stock weather, but man are there more than obvious differences sometimes…

Check This mod out for a free solution to METAR-BASED weather. Works pretty nifty

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I’m sure I’m not the first person to notice it. The trouble is, actual comments regarding the specifics of issues with weather modelling tend to get drowned out by endless posts just saying it’s all ‘broken’, and the sim is ‘unplayable’. Even if the first is true (which partly depends on expectations anyway) the second self-evidently isn’t.

Back to the original question, I’ve been happily bimbling around for weeks (in IFR, or pushing-my-luck IFR-into-IMC) using stock weather, and as my general guide to what to expect when I get where I’m going to. Sometimes it is spot on, sometimes it isn’t. Which as far as realism goes, is about as ‘realistic’ as weather forecasting ever is. I’m quite sure that the real-world pilots amongst us (there seem to be quite a few) prefer to trust what their eyes actually tell them if there is a humongous thundercloud sitting over their destination, than rely on a METAR that says it wasn’t there when they last checked. The weather changes first, and then the METAR…


Probably not, but it’s the first time I’ve read it. And I’ve read a lot of forum posts :slight_smile:

Amen :smiley:

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I’m not even sure why there is so much emphasis on METARs. That is a single observation in time and space for an airfield. It is out of date the second after it is logged and way before it ever makes it onto the broadcasts/get disseminated.

If you want to know what the weather will be like at an airfield for planning purposes you’d be better off with the TAF as that is a forecast over time specific to that airfield. I could see that being used to generate a time series of data for a location to give effects of weather changing over time. But that only works for that specific location. Everything else would have to be interpolated which meteorologically speaking is pretty much garbage unless you have all the computing power to do field modification etc.


Yes, Live Weather is definitely applying some kind of incorrect correction factor to temperature based on the altitude of the terrain. It is as if it is taking the temperature in the model for that location and descending the air parcel adiabatically to sea level at 1.9 degrees C per thousand feet.

SEQM is 7,910 feet. I won’t have a chance to try this until tonight, but I’m curious what would happen if an aircraft spawns at SEQM with the “clear sky” preset enabled. This should give the ISA temperature for 7,900 feet, which would be almost exactly 0 C (32F).

At a guess, because simmers have been using them as ‘best representation of reality’ for years, and have got used to the idea.

I’ve not done the calculation (and couldn’t, without more information than I’ve got) but I suspect that less than 1% of the flyable-in portion of the Earth’s atmosphere is within sensible range of METARs anyway. You need broader coverage to actually model weather, either for a sim or for real-life purposes. It’s three-dimensional, and the role-model for chaotic systems. You can observe it. You can guess what its going to do next. You sure as hell can’t predict it with certainty. Which is why METARs are needed. To keep pilots up to date on how the weather has failed to meet your earlier predictions…