Dewpoint & Humidity

Relative Humidity learn more

Relative Humidity

The Relative Humidity map displays the current relative humidity (%) at each Mesonet site. Relative Humidity is the measure of the water vapor content of the air at a given temperature.

This map is updated every 5 minutes.
3-hr Humidity Change learn more

3-hr Humidity Change

The 3-hour Relative Humidity Change map plots the change in relative humidity at each Mesonet station over the past 3 hours. This map is updated every 5 minutes.
24-hr Humidity Change learn more

24-hr Humidity Change

The 24-hour Relative Humidity Change map plots the change in relative humidity at each Mesonet station over the past 24 hours. This map is updated every 5 minutes.
Dewpoint learn more

Dewpoint

The Dewpoint Temperature map displays the current dewpoint temperature (degrees F) observed at each Mesonet site. Dewpoint is the temperature to which air must be cooled for saturation to occur (given a constant pressure and water vapor content).

This map is updated every 5 minutes.
1-hr Dewpoint Change learn more

1-hr Dewpoint Change

The 1-hour Dewpoint Change map plots the change in dewpoint temperature (degrees F) at each Mesonet station over the past 1 hour. This map is updated every 5 minutes.
3-hr Dewpoint Change learn more

3-hr Dewpoint Change

The 3-hour Dewpoint Change map plots the change in dewpoint temperature (degrees F) at each Mesonet station over the past 3 hours. This map is updated every 5 minutes.
Dewpoint Depression learn more

Dewpoint Depression

The Dewpoint Depression map displays the difference (degrees Fahrenheit) between the air temperature and the dewpoint temperature. This map is updated every 5 minutes.
24-hr Dewpoint Change learn more

24-hr Dewpoint Change

The 24-hour Dewpoint Change map plots the change in dewpoint temperature (degrees F) at each Mesonet station over the past 24 hours. This map is updated every 5 minutes.
Wet-Bulb Temperature learn more

Wet-Bulb Temperature

The Wet-Bulb Temperature map displays the temperature the air would have if it cooled to saturation by evaporation. Lower wet bulb temperatures in the summer mean that air conditioners can more efficiently cool the air. Wet bulb temperatures below freezing in the winter indicate that temperatures could drop below freezing during precipitation.
Theta-E learn more

Theta-E

The Theta-E map displays the equivalent potential temperature at each Mesonet station in degrees Kelvin. Theta-E is a quantity that indicates the stability of the atmosphere, or the available energy in the atmosphere. In general, larger Theta-E values represent greater potential instability. Theta-E is the temperature the air would have if (1) all of the moisture were condensed out and (2) it was lowered to sea level.
Current Moisture Convergence learn more

Current Moisture Convergence

The Current Moisture Convergence map displays areas where wind and moisture converge or diverge across the state. Areas of moisture convergence represent locations favorable for the development of surface-based thunderstorms.

National

Dewpoint learn more

Dewpoint

The Dewpoint Temperature map displays the current dewpoint temperature (degrees F) observed at each National Weather Service site. Dewpoint is the temperature to which air must be cooled for saturation to occur (given a constant pressure and water vapor content).

This map is updated every hour using data from NOAA's National Weather Service.

Relative Humidity learn more

Relative Humidity

The Relative Humidity map displays the current relative humidity (%) at each National Weather Service site. Relative Humidity is the measure of the water vapor content of the air at a given temperature.

This map is updated every hour using data from NOAA's National Weather Service.