Online Windsock

Wind Right Now — Live Windsock for Your Location

The windsock above is live. The moment this page detects your location — or you search for a city — it pulls the current wind speed and direction from real meteorological data and translates it into the one thing every pilot, sailor and ground worker understands instantly: the angle of the sock. In dead calm the sock hangs limp against its pole. As the wind picks up it lifts, and by the time it is streaming fully horizontal you are looking at a strong, sustained wind of roughly 28 km/h or more. Nothing on the page needs interpreting; the windsock does what the real thing has done at airfields for over a century.

Below the sock you will find the exact numbers behind the animation: the current wind speed, the gust strength, the compass direction the wind is coming from, the Beaufort force, and the precise angle the sock is holding. Drag the slider to override the live reading and see exactly how the sock behaves at any wind speed from a flat calm to a full gale.

How a Windsock Works

This virtual windsock recreates that behaviour online: it reads live wind data for any location and animates the cone exactly as a real fabric windsock would. A windsock is deceptively simple: a tapered fabric tube, open at both ends, mounted on a swivel so it can rotate freely around a pole. Wind enters the wide mouth, inflates the cone, and escapes through the narrow tail. Two forces are working at once. First, because the sock pivots freely, the mouth always swings to face directly into the oncoming wind — so the tube instantly aligns itself with wind direction. Second, the moving air pushes the inflated cone upward and outward against gravity; the stronger the wind, the higher the sock rises. A light breeze barely lifts the tip, while a strong wind holds the entire length out straight.

The taper matters. Because the tube narrows toward the tail, the escaping air is slightly compressed and accelerated, which keeps the sock inflated and responsive even in moderate wind. A plain cylinder would flap and collapse; the cone shape is what gives a windsock its smooth, readable behaviour. Aviation windsocks are built to a standard so their angle corresponds to a known wind speed — which is exactly what makes them a measuring instrument rather than just a flag.

Reading Wind Speed From the Sock's Angle

The angle a windsock holds is a direct, if approximate, readout of wind speed. A properly specified aviation sock begins to stir at around 3 knots (about 6 km/h), lifts to roughly 45° in a moderate breeze, and reaches fully horizontal — "fully extended" — at about 15 knots (28 km/h). Beyond that the sock cannot rise any further; it simply holds horizontal and may begin to whip and ripple in gusts. That is why the animation on this page maps wind speed to angle up to the extension point and then holds steady: it mirrors the physical limit of a real sock.

This is why airfields still rely on windsocks despite having electronic anemometers: a pilot on final approach can read the sock in a single glance and know both the crosswind component and its rough strength without looking at an instrument panel.

Reading Wind Direction — Which Way Is the Wind Blowing?

A windsock reports direction by pointing. The open mouth faces into the wind; the tail streams away downwind. This leads to the one rule that trips people up: the wind is named for where it comes from, not where it is going to. If a windsock is streaming toward the east, the wind is coming from the west, and a meteorologist would call it a westerly wind. On this page the live direction is given as a compass bearing and a named direction (for example "NW" or "SSE") so there is no ambiguity — but watch the sock itself swing, and you will see it always turns its mouth to meet the wind.

Windsock Angle and the Beaufort Scale

Long before electronic sensors, sailors used the Beaufort scale to estimate wind from its visible effects, and a windsock maps neatly onto it. Force 0 (calm) leaves the sock hanging dead. Force 2–3 (light to gentle breeze) lifts it partway. Force 4 (moderate breeze) has it flying at a strong angle. Force 5–6 (fresh to strong breeze) holds it fully horizontal, and in Force 7 and above (near gale and stronger) the extended sock cracks and ripples violently in the gusts. The live reading on this page includes the current Beaufort force so you can connect the sock's behaviour to the centuries-old scale.

Where Windsocks Are Used

The windsock's home is aviation. Every airport, airstrip, helipad and glider field has at least one, positioned so pilots can judge wind on takeoff and landing — the phase of flight where a crosswind or tailwind matters most. But the instrument's clarity has spread it far beyond runways. You will see windsocks beside long, exposed bridges and mountain highways to warn drivers of dangerous crosswinds. Chemical plants, refineries and laboratories mount them prominently so that, in the event of a gas or chemical release, workers can instantly see which way a toxic cloud would drift and move upwind. Farms use them for spraying decisions, race circuits for safety, and even amusement parks and ski resorts to decide whether high rides or lifts can run.

Windsock vs Anemometer vs Wind Vane

These three instruments overlap but answer different questions. An anemometer measures wind speed precisely, usually with spinning cups or an ultrasonic sensor, and reports an exact number. A wind vane measures wind direction precisely, pointing into the wind and reporting a bearing. A windsock is the elegant compromise: it shows both speed and direction at once, at a glance, with no display and no power — but only approximately. For a control tower that needs logged data it is paired with an anemometer; for a pilot who needs an instant read on short final, the sock alone is often enough.

Wind Speed Units — km/h, mph, m/s and Knots

Wind speed is quoted in different units depending on where and why. Aviation and marine use almost universally favour knots (nautical miles per hour), which is why windsock specifications are given in knots. Most of the world's weather reports use kilometres per hour; the United States uses miles per hour; and scientists prefer metres per second. As a rough guide, the windsock's "fully extended" threshold of 15 knots equals about 28 km/h, 17 mph, or 7.7 m/s. The live reading here can be read in any of these systems, and the conversions are consistent with the Beaufort thresholds above.

Multilingual Wind Terms

Because wind matters everywhere, the words for it travel. A windsock is a manche à air in French, a Windsack in German, a manga de viento in Spanish, a manica a vento in Italian, and a biruta in Portuguese. The wind itself is vento, vent, Wind, viento or ветер depending on where you stand. Whatever the language, the sock says the same thing to everyone who sees it — which is precisely the point of a visual instrument.

A Short History of the Windsock

The windsock's ancestry runs back further than aviation. Roman cavalry and later medieval armies flew the draco, a dragon-shaped tube standard that inflated and hissed in the wind, both to intimidate and to show archers the wind for their aim. When aviation arrived in the early twentieth century, the same simple physics were pressed into service at the first airfields, and the high-visibility orange cone we know today became a global aviation standard. It has survived every advance in electronic sensing because nothing has improved on its core virtue: a wind instrument you can read from a moving aircraft, at a distance, with no power and no interpretation.