We're excited to unveil our latest feature: ECMWF (European Centre for Medium-Range Weather Forecasts) has developed its own data-driven forecast model called the Artificial Intelligence/Integrated Forecasting System (AIFS)!
Extended Forecast: Get a detailed weather outlook for the next 15 days, helping you plan your activities and trips with greater accuracy. Simply go to the detailed forecast of any location with the ECMWF model.
Global Coverage: Access precise weather forecasts for any location in the world. Whether you're checking the weather for your hometown or the destination of your next trip, Windy.com has you covered.
Detailed Insights: Our 15-day forecast provides in-depth information, including temperature trends, precipitation probabilities, wind speeds, and more.
However, looking 15 days ahead into the weather is risky. This is why we recommend using this long forecast as a trend-watching tool rather than planning your activities for specific days based on this forecast solely.
🤖 How does AIFS work?
These systems use advanced machine learning models to analyze current and past weather patterns, providing accurate and detailed forecasts. AIFS employs ensemble forecasting for reliability, continuously learns and updates its models, and delivers real-time updates. The result is increased forecast accuracy, early warnings for severe weather, personalized predictions, and improved decision-making across various sectors, significantly enhancing our ability to respond to weather changes.
🔗 How to Access the 15-Day Forecast?
Upgrade to Premium: If you're not already a Premium user, head over to this link to purchase Premium
Select Your Location: In Windy, click on any location in the world.
View the Forecast: Enjoy a comprehensive 15-day weather forecast provided by ECMWF and AIFS.
Feel free to share your thoughts and feedback in the comments below.
Jari Sochorová 
Comments (12)
Second --
the warnings about how the tail end of these longer forecasts are less reliable has no visual indication on the forecast, nor any way to disable this longer-term, less accurate forecast. That caveat only appears on the announcement of this product.
Likewise, there should be a visual cue that after day ~6 or so, the forecast is not of the same level of accuracy. Perhaps a change in background or hashing to visually cue the less accurate tail end.
EG When NOAA releases its extended hurricane forecasts, you'll notice that the cone gets larger and the central line of the path is disabled by default. This is because there is less certainty.
Personally, I'd rather have a button to turn off this 15-day completely and revert to the old week long forecast. It's hard to read on my iPhone and I know it's less reliable.
Thank you,
Will also the current prediction be better with the AI ?
Re. The operation of the AI,
- will the AI operate with constantly fintuning or will the AI training be updated as software in general, ie in steps as new releases?
For paragliding on a specific spot many times its possible understand how the local whether usually deviate from the forecasted .
IF the AI take in to account the actual weather at a spot, the local variations at this spot ought to learned by the AI.
Correct?
Then the AI also ought to make better forecasts for that specific spot even in the short and medium term forecast,
I usually look the predicted weather for a place and a specific day. I then follow how the prediction changes day by day. Then it's possible to see a trend in how the forecasted weather changes. This give me a hint on how the predicted weather for that day and place is most likely to change if changed at all.
- Is this a valid way of interpret the possible the forcasted weather i.e. the possible changes in weather compared to the predicted original prediction?
Is there any way the see the calculated certainty of presented forecasts?
I find your description of the model contradictory. At the beginning it's touting using this model plan for future activities with more accuracy and at the end it's stating forecasting out 15 days is risky and caution should used for planning activities around it. Would be good to know the positive predictive value when it forecasts a windy day on a certain body of water 15 days out (ie what % of the time that it predicts a windy day does it turn out to be correct) and likewise what is the sensitivity (what percent of windy days does it truly pickup 15 days out).
We recognize predicting weather/wind is challenging but it would be helpful to know if the accuracy is a flip of the coin (50%) or more like 80-90%.
Thanks for all you have done with this great app!
I can't make the payment smoothly. I've never used such a crappy payment system.
However it seems that my phone is not wide enough as the days are not displayed in the top chart which makes it a bit useless. They do appear when I switch to landscape view though. I guess you are aware of this UI issue.