sim/
sim/weather/
sim/weather/aircraft/
sim/weather/aircraft/wind_now_x_msc
float
in m/s
Wind direction vector in OpenGL coordinates, X component.
sim/weather/aircraft/wind_now_y_msc
float
in m/s
Wind direction vector in OpenGL coordinates, Y component.
sim/weather/aircraft/wind_now_z_msc
float
in m/s
Wind direction vector in OpenGL coordinates, Z component.
sim/weather/aircraft/wind_speed_kts[13]
float
in >=
0. The wind speed in knots.
sim/weather/barometer_current_inhg
float
in inhg
29.92+-.... Barometric pressure at the point the current flight is at.
sim/weather/barometer_sealevel_inhg
float
in inhg
29.92 +- .... The barometric pressure at sea level.
sim/weather/cloud_base_msl_m[0]
float
in meters
MSL >= 0. The base altitude for this cloud layer.
sim/weather/cloud_base_msl_m[1]
float
in meters
MSL >= 0. The base altitude for this cloud layer.
sim/weather/cloud_base_msl_m[2]
float
in meters
MSL >= 0. The base altitude for this cloud layer.
sim/weather/cloud_coverage[0]
float
in enum
0..4 where 0 = Clear, 1 = Few, 2 = Scattered, 3 = Broken, 4 = Overcast
sim/weather/cloud_coverage[1]
float
in enum
0..4 where 0 = Clear, 1 = Few, 2 = Scattered, 3 = Broken, 4 = Overcast
sim/weather/cloud_coverage[2]
float
in enum
0..4 where 0 = Clear, 1 = Few, 2 = Scattered, 3 = Broken, 4 = Overcast
sim/weather/cloud_tops_msl_m[0]
float
in meters
>= 0. The tops for this cloud layer.
sim/weather/cloud_tops_msl_m[1]
float
in meters
>= 0. The tops for this cloud layer.
sim/weather/cloud_tops_msl_m[2]
float
in meters
>= 0. The tops for this cloud layer.
sim/weather/cloud_type[0]
int
in enum
The type of clouds for this cloud layer. Currently there are only 3 cloud layers, 0, 1 or 2. Cloud types:<p>Clear = 0, High Cirrus = 1, Scattered = 2, Broken = 3, Overcast = 4, Stratus = 5 (740 and newer)
sim/weather/cloud_type[1]
int
in enum
The type of clouds for this cloud layer. Currently there are only 3 cloud layers, 0, 1 or 2. Cloud types:<p>Clear = 0, High Cirrus = 1, Scattered = 2, Broken = 3, Overcast = 4, Stratus = 5 (740 and newer)
sim/weather/cloud_type[2]
int
in enum
The type of clouds for this cloud layer. Currently there are only 3 cloud layers, 0, 1 or 2. Cloud types:<p>Clear = 0, High Cirrus = 1, Scattered = 2, Broken = 3, Overcast = 4, Stratus = 5 (740 and newer)
sim/weather/dewpoi_sealevel_c
float
in degreesC
The dew point at sea level.
sim/weather/download_real_weather
int
as a boolean
Wehther the sim downloads real weather itself. DEPRECATED, not writable in v12, do not use. Use new weathre APIs for v12 weather.
sim/weather/gravity_mss
float
in m/s^2
Acceleration of gravity for the current planet.
sim/weather/has_real_weather_bool
int
as a boolean
Whether a real weather file has been located. DEPRECATED, not writable in v12, do not use. Use new weathre APIs for v12 weather.
sim/weather/meteorite_density
float
in unspecified units
The density of meteorites in space.
sim/weather/microburst_probability
float
as a ratio
[0.0 - 1.0] The probability of a microburst occurring.
sim/weather/precipitation_on_aircraft_ratio
float
as a ratio
[0..1] The amount of rain on the airplane windshield as a ratio from 0 to 1.
sim/weather/rain_percent
float
as a ratio
[0.0 - 1.0] The percentage of rain falling.
sim/weather/rate_change_percent
float
as a ratio
[-1.0 - 1.0] How fast weather is improving or degenerating.- -1.0 means degenerating, 1.0 means improving.
sim/weather/region/
Weather data for the surrounding region. These form the basis of the environmental weather, which will also vary slightly over distance. Mostly modifiable.
sim/weather/region/atmosphere_alt_levels_m[13]
float
in meters
The altitudes for the thirteen atmospheric layers returned in other sim/weather/region datarefs.
sim/weather/region/change_mode
int
in enum
How the weather is changing. 0 = Rapidly Improving, 1 = Improving, 2 = Gradually Improving, 3 = Static, 4 = Gradually Deteriorating, 5 = Deteriorating, 6 = Rapidly Deteriorating, 7 = Using Real Weather
sim/weather/region/cloud_base_msl_m[3]
float
in meters
MSL >= 0. The base altitude for this cloud layer.
sim/weather/region/cloud_coverage_percent[3]
float
in float
Cloud coverage per layer, range 0 - 1.
sim/weather/region/cloud_tops_msl_m[3]
float
in meters
>= 0. The tops for this cloud layer.
sim/weather/region/cloud_type[3]
float
in float
Blended cloud types per layer. 0 = Cirrus, 1 = Stratus, 2 = Cumulus, 3 = Cumulo-nimbus. Intermediate values are to be expected.
sim/weather/region/dewpoint_deg_c[13]
float
in degreesC
The dew point at specified levels in the atmosphere.
sim/weather/region/qnh_base_elevation
float
in float
Base elevation for QNH. Takes into account local physical variations from a spheroid.
sim/weather/region/qnh_pas
float
in float
Base elevation for QNH. Takes into account local physical variations from a spheroid.
sim/weather/region/rain_percent
float
as a ratio
[0.0 - 1.0] The percentage of rain falling.
sim/weather/region/runway_friction
float
in enum
The friction constant for runways (how wet they are). Dry = 0, wet(1-3), puddly(4-6), snowy(7-9), icy(10-12), snowy/icy(13-15)
sim/weather/region/sealevel_pressure_pas
float
in pascals
Pressure at sea level, current planet
sim/weather/region/sealevel_temperature_c
float
in degreesC
The temperature at sea level.
sim/weather/region/shear_direction_degt[13]
float
in degrees
[0 - 360]. The direction for a wind shear, per above.
sim/weather/region/shear_speed_msc[13]
float
in kts
>= 0. The gain from the shear in knots.
sim/weather/region/temperature_altitude_msl_m[13]
float
in meters
>= 0. Altitudes used for the temperatures_aloft_deg_c array.
sim/weather/region/temperatures_aloft_deg_c[13]
float
in degreesC
Temperature at pressure altitudes given in sim/weather/region/atmosphere_alt_levels. If the surface is at a higher elevation, the ISA difference at wherever the surface is is assumed to extend all the way down to sea level.
sim/weather/region/thermal_rate_ms
float
in m/s
>= 0 The climb rate for thermals.
sim/weather/region/tropo_alt_m
float
in meters
Altitude of the troposphere
sim/weather/region/tropo_temp_c
float
in degreesC
Temperature at the troposphere
sim/weather/region/turbulence[13]
float
in float
[0 - 10] A turbulence factor, 0-10, the unit is just a scale.
sim/weather/region/update_immediately
int
in bool
If this is true, any weather region changes EXCEPT CLOUDS will take place immediately instead of at the next update interval (currently 60 seconds).
sim/weather/region/variability_pct
float
as a ratio
How randomly variable the weather is over distance. Range 0 - 1.
sim/weather/region/visibility_reported_sm
float
in statute_miles
>= 0. The reported visibility (e.g. what the METAR/weather window says).
sim/weather/region/wave_amplitude
float
in meters
Amplitude of waves in the water (height of waves)
sim/weather/region/wave_dir
float
in degrees
Direction of waves.
sim/weather/region/wave_length
float
in meters
Length of a single wave in the water - not writable starting in v12
sim/weather/region/wave_speed
float
in m/s
Speed of water waves - not writable starting in v12
sim/weather/region/weather_preset
int
in enum
Read the UI weather preset that is closest to the current conditions, or set an UI preset. Clear(0), VFR Few(1), VFR Scattered(2), VFR Broken(3), VFR Marginal(4), IFR Non-precision(5), IFR Precision(6), Convective(7), Large-cell Storms(8)
sim/weather/region/weather_source
int
in enum
What system is currently controlling the weather. 0 = Preset, 1 = Real Weather, 2 = Controlpad, 3 = Plugin.
sim/weather/region/wind_altitude_msl_m[13]
float
in meters
>= 0. The center altitude of this layer of wind in MSL meters.
sim/weather/region/wind_direction_degt[13]
float
in degrees
[0 - 360] The direction the wind is blowing from in degrees from true north clockwise.
sim/weather/region/wind_speed_msc[13]
float
in kts
>= 0. The wind speed in knots.
sim/weather/relative_humidity_sealevel_percent
float
in percent
Relative humidity at sea-level
sim/weather/rho
float
in unspecified units
The density of the air in kg/cubic meters.
sim/weather/runway_friction
float
in enum
The friction constant for runways (how wet they are). Dry = 0, wet(1-3), puddly(4-6), snowy(7-9), icy(10-12), snowy/icy(13-15)
sim/weather/runway_is_patchy
float
as a boolean
0 = uniform conditions, 1 = patchy conditions
sim/weather/shear_direction_degt[0]
float
in degrees
[0 - 360]. The direction for a wind shear, per above.
sim/weather/shear_direction_degt[1]
float
in degrees
[0 - 360]. The direction for a wind shear, per above.
sim/weather/shear_direction_degt[2]
float
in degrees
[0 - 360]. The direction for a wind shear, per above.
sim/weather/shear_speed_kt[0]
float
in kts
>= 0. The gain from the shear in knots.
sim/weather/shear_speed_kt[1]
float
in kts
>= 0. The gain from the shear in knots.
sim/weather/shear_speed_kt[2]
float
in kts
>= 0. The gain from the shear in knots.
sim/weather/sigma
float
in unspecified units
The atmospheric density as a ratio compared to sea level.
sim/weather/speed_sound_ms
float
in m/s
Speed of sound in meters/second at the plane's location.
sim/weather/temperature_ambient_c
float
in degreesC
The air temperature outside the aircraft (at altitude).
sim/weather/temperature_le_c
float
in degreesC
The air temperature at the leading edge of the wings in degrees C.
sim/weather/temperature_sealevel_c
float
in degreesC
The temperature at sea level.
sim/weather/temperature_tropo_c
float
in degreesC
DEPRECATED IN v12 - in v11 these can be used to customize the tropopause altitude and temperature; in v12 these are not writable and return default values
sim/weather/thermal_altitude_msl_m
float
in m
MSL >= 0 The top of thermals in meters MSL.
sim/weather/thermal_percent
float
as a ratio
[0..1] The percentage of thermal occurance in the area.
sim/weather/thermal_rate_ms
float
in m/s
>= 0 The climb rate for thermals.
sim/weather/thunderstorm_percent
float
as a ratio
[0.0 - 1.0] The percentage of thunderstorms present.
sim/weather/tropo_alt_mtr
float
in meters
DEPRECATED IN v12 - in v11 these can be used to customize the tropopause altitude and temperature; in v12 these are not writable and return default values
sim/weather/turbulence[0]
float
in float
[0 - 10] A turbulence factor, 0-10, the unit is just a scale.
sim/weather/turbulence[1]
float
in float
[0 - 10] A turbulence factor, 0-10, the unit is just a scale.
sim/weather/turbulence[2]
float
in float
[0 - 10] A turbulence factor, 0-10, the unit is just a scale.
sim/weather/use_real_weather_bool
int
as a boolean
Whether a real weather file is in use. DEPRECATED, not writable in v12, do not use. Use new weathre APIs for v12 weather.
sim/weather/view/
sim/weather/view/hail_ratio
float
as a ratio
Ratio of hail at the camera
sim/weather/view/rain_ratio
float
as a ratio
Ratio of rain fall at the camera
sim/weather/view/snow_ratio
float
as a ratio
Ratio of snow fall at the camera
sim/weather/view/temperature_C
float
in Celsius
Temperature at camera point
sim/weather/view/urban_ratio
float
as a ratio
Ratio of urbanization at the camera
sim/weather/view/wind_base_speed_kts
float
in knots
Base wind speed in knots before gusts
sim/weather/view/wind_gust_kts
float
in knots
Gust speed in knots
sim/weather/view/wind_relative_heading_deg
float
in degrees
Relative heading of instant wind vector to viewer
sim/weather/view/wind_relative_pitch_deg
float
in degrees
Relative pitch of instant wind vector to viewer
sim/weather/view/wind_shear_deg
float
in degrees
Shear angle range in degrees
sim/weather/view/wind_speed_msc
float
in m/s
Instantaneous wind speed, meters/second
sim/weather/visibility_reported_m
float
in meters
>= 0. The reported visibility (e.g. what the METAR/weather window says).
sim/weather/wave_amplitude
float
in meters
Amplitude of waves in the water (height of waves)
sim/weather/wave_dir
int
in degrees
Direction of waves.