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
temperatureMetarMETAR 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
dewPointMetarMETAR 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
pressureSeaLevelMetarMETAR 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
windSpeedMetarTafMETAR/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

Transition from METAR data to TAF data at +1h after last METAR report
windDirectionMetarTafMETAR/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

Transition from METAR data to TAF data at +1h
windGustMetarTafMETAR/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

Transition from METAR data to TAF data at +1h

When no gust reports - shows “windSpeedmetarTaf”
visibilityMetarTafMETAR/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

Transition from METAR data to TAF data at +1h after last METAR report
cloudBaseMetarTafMETAR/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

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
cloudCoverMetarTafMETAR/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

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

Units:
m/s
mph
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
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

Units:
Degrees - 000-359
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
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

Units:
Celsius [-90,60]
Fahrenheit [-130,140]
F: [-7d, +36h]
T I R M
WW
S: ∧∨~
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: ∧∨~
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: ∧∨~