Forecast for United States, Washington, シアトル＝タコマ＝ベルビュー (122.300 W 47.584 N)

Select Product

CIVIL

CIVIL Light

Two-Week-Overview

ASTRO

METEO

Unit: Metric | British <> Timezone Adjustment: -1h | Default | +1h

Sunrise: 05:22	Sunset: 21:06
Moonrise: 07:02	Moonset: 21:35
Civil twilight begin: 04:35	Civil twilight end: 21:53
Nautical twilight begin: 03:40	Nautical twilight end: 22:48
Astronomical twilight begin: 02:15	Astronomical twilight end: 00:13

Useful links
Road Map	Satellite Image	Satellite Flyby	Sky Map	Calsky Info

Icon Definition

Icon	Meaning	Technical Definition
	Clear	Total cloud cover less than 20%
	Partly Cloudy	Total cloud cover between 20%-60%
	Cloudy	Total cloud cover between 60%-80%
	Very Cloudy	Total cloud cover over over 80%
	Foggy	Relative humidity over 90% with total cloud cover less than 60%
	Light rain or showers	Precipitation rate less than 4mm/hr with cloud cover more than 80%
	Occasional showers	Precipitation rate less than 4mm/hr with cloud cover between 60%-80%
	Isolated showers	Precipitation rate less than 4mm/hr less than 60%
	Light or occasional snow	Precipitation rate less than 4mm/hr
	Rain	Precipitation rate over 4mm/hr
	Snow	Precipitation rate over 4mm/hr
	Mixed	Precipitation type to be ice pellets or freezing rain
	Thunderstorm possible	Lifted Index less than -5 with precipitation rate below 4mm/hr
	Thunderstorm	Lifted Index less than -5 with precipitation rate over 4mm/hr
	Windy	Sustained wind speed over 10.8m/s (force 6 or above)

For more details, please refer to the corresponding chapter in the Documentation.

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Application Programming Interface (API)

Graphical API

The graphical API will display the forecast diagram as seen at the 7Timer! website, this is useful for website makers who wish to include the forecast diagram in their websites. The graphical API address for this location would be

http://www.7timer.com/v4/bin/civil.php?lon=-122.3&lat=47.584&lang=en&ac=0&unit=metric&tzshift=0

The graphical API, when properly called, will return a PNG-type image, so you may use <img> tag to include the forecast diagrams in your website.

Machine-readable API

The machine-readable API will produce a set of data that can be used directly by application. We now offer API in both Extensible Markup Language (XML) and JavaScript Object Notation (JSON) standard. The API address for this location is:

XML: http://www.7timer.com/v4/bin/api.pl?lon=-122.3&lat=47.584&product=civil&output=xml
JSON: http://www.7timer.com/v4/bin/api.pl?lon=-122.3&lat=47.584&product=civil&output=json

A brief explanation of the parameters is given below:

lon, lat – Geographic coordinates of the specified site.
ac – Altitude Correction, only applicable in ASTRO forecast. Should be 0 (default), 2 or 7. Not applicable to the machine-readable APIs.
lang – Language. Not applicable in METEO forecast and the machine-readable APIs..
unit – Metric or British. Not applicable to the machine-readable APIs.
output – should be xml or json (for machine-readable APIs).
tzshift – Adjustment of timezone. Not applicable to the machine-readable APIs.
product – Product selection for machine-readable APIs. Should be astro, civil, civillight, meteo or two.

A successful call of the API will return sets of values. For exact meaning of these values, please refer to the corresponding chapther in Documentation.

Term of Use

You may use these data freely as long as the purpose is noncomercial. Program developers are asked to notify me when using the service so I can track the server workload. Please remember that weather forecast is one of the most highly challenging problems in our times, so using these data is at your own risk.

Find a Location by Coordinates

If you have already know the geographic coordinates of a location, you may enter them to get forecast. Coordinates must be input as "dd.ddd/-dd.ddd", like "113.190,23.094 or -113.190,-23.094", with precision up to 0.001.