Pictograms

Pictograms

Weather conditions are graphically summarised by pictograms. These show sunshine, clouds, precipitation type, intensity and thunderstorms for the time period referenced in the forecast. A detailed symbol description is shown below. Pictograms are used in overviews like on the start page and in meteograms. The period for which the pictogram is effective is printed above or below. An hour indicates the end of the interval (e.g. a 3-hour pictogram marked 11:00 includes the forecast from 8:01 until 11:00, and the following 3-hour pictogram marked 14:00 includes the forecast from 11:01 until 14:00).

Day and Night Pictograms

Day and night pictograms show the weather condition for a period of one or three hour values during the day and night. They contain more detailed descriptions of weather conditions than the iday pictograms which represent a daily total of weather conditions.

Daytime	Nighttime	No.	Description
		1	Clear, cloudless sky
		2	Clear, few cirrus
		3	Clear with cirrus
		4	Clear with few low clouds
		5	Clear with few low clouds and few cirrus
		6	Clear with few low clouds and cirrus
		7	Partly cloudy
		8	Partly cloudy and few cirrus
		9	Partly cloudy and cirrus
		10	Mixed with some thunderstorm clouds possible
		11	Mixed with few cirrus with some thunderstorm clouds possible
		12	Mixed with cirrus and some thunderstorm clouds possible
		13	Clear but hazy
		14	Clear but hazy with few cirrus
		15	Clear but hazy with cirrus
		16	Fog/low stratus clouds
		17	Fog/low stratus clouds with few cirrus
		18	Fog/low stratus clouds with cirrus
		19	Mostly cloudy
		20	Mostly cloudy and few cirrus
		21	Mostly cloudy and cirrus
		22	Overcast
		23	Overcast with rain
		24	Overcast with snow
		25	Overcast with heavy rain
		26	Overcast with heavy snow
		27	Rain, thunderstorms likely
		28	Light rain, thunderstorms likely
		29	Storm with heavy snow
		30	Heavy rain, thunderstorms likely
		31	Mixed with showers
		32	Mixed with snow showers
		33	Overcast with light rain
		34	Overcast with light snow
		35	Overcast with mixture of snow and rain

iday Pictograms

iday pictograms show a summary of the daily weather condition. They are used in the API data feeds. The data feeds for 7 days forecasts use all the 17 iday picto- codes, the data feeds for 14 days use only the first 11 iday pictocodes. The json data feed also uses the 17 iday pictocodes.

Pictogram	No.	Description
	1	Sunny, cloudless sky
	2	Sunny and few clouds
	3	Partly cloudy
	4	Overcast
	5	Fog
	6	Overcast with rain
	7	Mixed with showers
	8	Showers, thunderstorms likely
	9	Overcast with snow
	10	Mixed with snow showers
	11	Mostly cloudy with a mixture of snow and rain
	12	Overcast with light rain
	13	Overcast with light snow
	14	Mostly cloudy with rain
	15	Mostly cloudy with snow
	16	Mostly cloudy with light rain
	17	Mostly cloudy with light snow

Special Pictograms

Daytime	Nighttime	No.	Description
		18	Dust desert dust; dry dust softened by the wind
		19	Blowing dust desert storm; storm or strong wind that carries sand or dust with it

Note: the special pictograms are only shown on our website and not included in the API

Calculation of the Pictograms

meteoblue pictograms show the most likely weather conditions for a location, based on a very detailed analysis of local forecast (black squares) in an area (yellow square). The area considered is within 20-30 km of the chosen centre point location (e.g. green points: Évian in Southeast and Morges in Northwest of square).

For each point, a different pictogram is calculated. Main factors considered are:

• cloud cover: average of all cloud cover in the area.
• precipitation intensity: average of precipitation for the chosen location.
• precipitation type: prevailing precipitation for the chosen location.
• wind (if displayed): average or maximum wind for the chosen location.

Pictogram calculation combines the regional and local forecasts to match our perception: sunshine and cloudiness are perceived regionally, whereas precipitation, wind and temperature are perceived locally.

Download

Get our weather pictograms for free: you can use them with our or with your data, placing a link from your page to this page. All rights reserved. meteoblue_weather_pictograms_2016-11-04.zip