Aviation


The Tomorrow.io REST Weather API provides aviation-related data fields.

Important notice about "Metar" and "MetarTaf" fields:
Our weather engine uses formal airports weather reports (METAR, TAF, ASOS, and other airport weather observations) and publish them on the timeline, allowing users to consume the data sources as a fluent synthetic feed. Using these fields can allow users to base automatic alerts and insights on the most relevant aviation-related weather source, under consideration that this data is an advisory only.

FieldDescriptionAvailability
temperatureMetar

METAR temperature

Includes all weather observations reported by station (including ASOS)

F: [-7d, +1h]
I: T I R (no map support)
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
dewPointMetar

METAR dew point

Includes all weather observations reported by station (including ASOS)

F: [-7d, +1h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
pressureSeaLevelMetar

METAR barometric pressure that was last reported. After 2 hours from last report field will be "null"

Includes all weather observations reported by station (including ASOS)

F: [-7d, +1h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
windSpeedMetarTaf

METAR/TAF wind speed

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h after last METAR report
windDirectionMetarTaf

METAR/TAF wind dierction

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h
windGustMetarTaf

METAR/TAF wind gust

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h

When no gust reports - shows “windSpeedmetarTaf”

visibilityMetarTaf

METAR/TAF visibility

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h after last METAR report
cloudBaseMetarTaf

METAR/TAF cloud base ("Ceiling")

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h after last METAR report

When more than one cloud bases reported - shows only the lowest altitude reported

cloudCoverMetarTaf

METAR/TAF cloud cover

METAR Includes all weather observations reported by station (including ASOS)

F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Describes the lowest reported cloud base.
Transition from METAR data to TAF data at +1h after last METAR report

Rounded to 4 coverage options:
FEW = 25% (1-2/8)
SCT = 50% (3-4/8)
BKN = 75% (5-6-7/8)
OVC = 100% (8/8)

windSpeedAloftxxxxx

Example:
windSpeedAloft3000

Wind speed aloft (WAFS product)

The field returns the wind's velocity at the requested altitude defined with 'xxxxx'

Supported altitudes:
  • Range from 3,000 to 55,000 feet MSL, with 1000 feet increments
  • 6,400 and 98,000 feet
Units:
m/s
mph
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

windDirectionAloftxxxxx

Example:
windDirectionAloft55000

Wind direction aloft (WAFS product)

The field returns the wind's direction at the requested altitude defined with 'xxxxx'

Supported altitudes:
  • Range from 3,000 to 55,000 feet MSL, with 1000 feet increments
  • 6,400 and 98,000 feet
Units:
Degrees - 000-359
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

temperatureAloftxxxxx

Example:
temperatureAloft10000

Temperature aloft (WAFS product)

The field returns the temperature at the requested altitude defined with 'xxxxx'

Supported altitudes:
  • Range from 3,000 to 55,000 feet MSL, with 1000 feet increments
  • 6,400 and 98,000 feet
Units:
Celsius [-90,60]
Fahrenheit [-130,140]
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

humidityAloftxxxxx

Example:
humidityAloft3000

Humidity aloft

The field returns the humidity at the requested altitude defined with 'xxxxx'

Supported altitudes:
3000, 5000, 6400, 10000, 14000, 18000, 24000, 30000, 34000, 39000, 45000, 53000, 98000

F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

dewPointAloftxxxxx

Example:
dewPointAloft3000

Dewpoint aloft

The field returns the dewpoint at the requested altitude defined with 'xxxxx'

Supported altitudes:
3000, 5000, 6400, 10000, 14000, 18000, 24000, 30000, 34000, 39000, 45000, 53000, 98000

F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

turbAloftxxxxx

Example:
turbAloft27000

Turbulence aloft (WAFS product)

The field returns a decimal value ranging from 0 to 1 according to the eddy dissipation rate index, for fhe requested altitude defined with 'xxxxx'

Supported altitudes (MSL):
10000, 14000, 18000, 24000, 27000, 30000, 34000, 39000, 45000

F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -

icingAloftxxxxx

Example:
icingAloft30000

Icing aloft (WAFS product)

The field returns a single number from -1 to 4 for the requested altitude defined with 'xxxxx'.
Index for the response is as follows:
-1: Supercooled Large Drops
0: None
1: Trace
2: Light
3: Moderate
4: Heavy

Supported altitudes (MSL):
6000, 10000, 14000, 18000, 24000, 30000

F: [-7d, +36h]
T I R M
WW
S: ∧∨~
P: -
cloudCeilingMetarTaf

Altitude of the lowest cloud layer which has more than 50% cloud cover.

Reported as "BKN" (Broken, 5-7 oktas or 5/8 to 7/8 coverage), or "OVC" (Overcast, 8 oktas or full sky coverage).

Default value for reported cloud ceiling - feet.

F: [-7d, +24h]
I: T I R
A: Land, 500 meters radius from METAR/TAF stations
S: None
Time steps = up to 1h (including 1h)
windSpeedRemarkMetarTafMax Wind speed that is reported in the remark section of METAR/TAFF: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h after last METAR report
windDirectionRemarkMetarTafDirection of the max wind that is reported in the remarks section of Metar/TafF: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h
lowestRVRMetarTAFThe lowest runway visibility reported in the Metar/Taf (The runway number isn't reported, only the visibility)F: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h
visibilityRemarkMetarTafVisibility that is reported in the remarks section of Metar/TafF: [-7d, +24h]
I: T I R
A: Land, 6km radius from METAR/TAF stations
S: None
P: -
Transition from METAR data to TAF data at +1h after last METAR report