Mountain Weather Forecast
Live high-altitude mountain weather forecasts with elevation-based meteorological downscaling. Compare summit ridge conditions against base camp staging points across 96 global high-altitude massifs.
Active Weather Station Observatory
K2 Mountain Weather Forecast
High-Altitude Mountain Meteorology: Frequently Asked Questions
How is elevation downscaling calculated for mountain summits?
Standard atmospheric forecast models operate on coarse horizontal grids (typically 10 to 25 km), which often smooth out sharp alpine peaks by thousands of vertical metres. Mountainity passes the exact measured elevation of each summit and base camp to the meteorological API, applying hydrostatic lapse rate adjustments to temperature, air density, and freezing levels.
Why do summit and base camp weather conditions differ drastically?
Due to environmental lapse rates, temperature drops on average 6.5°C for every 1,000 metres of vertical ascent. A peak standing at 8,611m (such as K2) is exposed to uninterrupted jet-stream wind shear and severe high-altitude blizzards, while its base camp at 5,000m benefits from valley sheltering and significantly higher atmospheric pressure.
Can digital weather models replace local alpine guides or radar?
No. Digital models cannot predict localized thermal inversions, spontaneous orographic cloud formation, or sudden serac collapses triggered by wind loading. Mountaineers must always cross-reference official regional weather services, consult experienced expedition leaders, and exercise prudent on-mountain judgment.
What is the data provenance and update frequency of this service?
Meteorological forecasts are powered by Open-Meteo under the Creative Commons Attribution 4.0 International License (CC BY 4.0), integrating NOAA, ECMWF, and DWD numerical model outputs updated multiple times daily.