Wind speed is measured in kilometers per hour.

Wind direction is linked to the points of the compass.

Precipitation is a measure of the amount of rain that has fallen.

Pressure is measured in millibars.

Relative humidity is the actual amount of water in the air compared to the maximum that the water will hold. To measure humidity you use a hygrometer.

Cloud cover is traditionally measured by how many eights of the sky is covered by cloud.

Temperature is measured using a maximum and minimum thermometer.