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Metrics Approximations
Wind

10km/s = 6 miles/h = 3 meter/s = 5 knots

Altitude

1,000 meter = 3,300 feet

Distance

10 kilometer = 6.2 miles = 5.4 nautical miles

Barometric Pressure
340 millibar at Everest Summit - 8,848 meter
500 millibar at Everest Base Camp - 5,500 meter
1000 millibar at Sea Level - 0 meter
The millibar reading versus alitude is dependent of weather systems
5 day weather forecast
Everest Summit, 8,848 m

Satellite: InReach tracker

DeLorme AG-008727-201 InReach Explorer Two Way Satellite Communicator with Built in Navigation

Ranked most important mountaineering safety tech by HumanEdgeTech.

DeLorme AG-008727-201 InReach Explorer Two Way Satellite Communicator with Built in Navigation

Wind Meter: Kestrell 5000

Professional windmeter (200gr/7ounces) measure up to hurricane force and beyond (40 meter/second or 89 mph). Temperature, relative humidity, compass and pressure.

Runs on 1 AA lithium battery. Expected battery life 400 hours.

Kestrel 5000 Environmental Meter

Kestrel 5000 Environmental Meter with LiNK (connects to smartphone)

5 day weather forecast
K2 Summit, 8,611 m

Weather Patterns Himalaya Mountaineering
Mount Everest 4 year weather compilation

4 Year Everest Weather

The Everest Spring Weather Window

Summit success and weather

The Everest Autumn Weather Window

Summit success and weather (2001)
Summit success and weather (2002)

K2 Weather Patterns

K2 Weather 2002
K2 Weather 2002