ColorfulClouds Weather API

Try out by yourself

S45Fnpxcwyq0QT4b is a demo token，in producation and development, you should use your own token after signing up at the dahsboard

• General weather API interface：https://api.caiyunapp.com/v2.5/S45Fnpxcwyq0QT4b/121.6544,25.1552/weather.json

The quota of the demo token is very limited and is renewed periodically, so please only use it for testing. If you meet any problem to access the above link, please contact us at api @ caiyunapp.com .

A global service

A global service

Global coverage of minutely forecast

Internationalization

• the datetime calculation will impact the avg/max/min value calculation of weather variables, our i18n features fully support this.
• the unit of measurement is fully support i18n requirement, we support Metric system, Imperial and US customary units and International System of Units
• the user-friendly nature language description of current weather conditions is support i18n, but we only provide Chinese, English and Japanese support.

Data coverage of general weather forecast

• Since the just begining of our weather API offering, we provide global hourly and daily weather forecast at any point on earth with arbitrary latitude and longitude.

Data coverage of minute-by-minute nowcasting service

• We are among the few providers can give global-wide nowcasting service, we can provide service in below areas

Continent	Country/region
Europe	Italy, Lithuania, Malta, France, Slovakia, Norway, Belarus, Iceland, Czech Republic, Slovenia, Germany, Spain, Ukraine, Denmark, Poland, Finland, Sweden, Croatia, Russia, Romania, Portugal, Estonia, Serbia, United Kingdom, Austria, Greece, Hungary
Oceania	Fiji, Guam, Australia, Marshall Islands, New Caledonia, Australia
Asia	Mainland China, Hong Kong, Macao and Taiwan, Diaoyu Islands, Spratly Islands, Turkey, Bahrain, Saudi Arabia, Indonesia, Iran, Singapore, Oman, Philippines, Japan, India, Cambodia, Cyprus, Malaysia, Vietnam, Kuwait, Thailand, South Korea, North Korea
North America	Canada, Bahamas, Cayman Islands, Mexico, Panama, Martinique, Cuba, United States, Bermuda, Puerto Rico, Kura, Guadeloupe, Nicaragua
South America	Brazil, French Guiana, Colombia, Guyana, Paraguay, Argentina

The quality of our nowcasting services is related with the quality of service of the radar data providers, it may vary from country to country; but as a service provider since 2014, we are a provened player in this area.

Data coverage of air quality forecast

Full scope of China and US.

API Features

Full-scoped variables

Name	Code	Quality	Unit of measurement	Temporal granularity	Geospatial scope	Comments
Temperature	temperature	temperature	°C, °F, K	realtime, hourly, daily	globally	temperature 2m above
Pressure	pres	pressure	Pa	realtime, hourly, daily	globally	pressure on surface
Relative humidity	humidity	relative humidity	%	realtime, hourly, daily	globally	relative humidity 2m above
Wind direction	wind direction	wind direction	degree	realtime, hourly, daily	globally	wind direction 10m above
Wind speed	wind speed	wind speed	km/h, mph, m/h	realtime, hourly, daily	globally	wind speed 10m above
Cloud rate	cloudrate	total cloud rate	0~1	realtime, hourly, daily	globally	total cloud rate
Shortwave radiation	dswrf	downward shortwave radiation	W/m^2	realtime, hourly, daily	globally	downward shortwave radiation on surface
Visibility	visibility	visibility by distance	km, mile, m	realtime, hourly, daily	globally	horizontal visibility by distance on surface
Nearest distance to precipitation area	Nearest distance to precipitation area	distance	km, mile, m	realtime	radar supported area	nearest distance to precipitation area
Intensity of nearest precipitation	intensity of nearest precipitation	precipitation intensity	0~1	realtime	radar supported area	intensity of nearest precipitation
Intensity of local precipitation	Intensity of local precipitation	precipitation intensity	0~1	realtime, minutely	radar supported area	intensity of local precipitation
sky condition	skycon	weather condition	text	realtime, hourly, daily	globally	weather condition
comfort index	comfort index	comfort index	text	realtime, hourly, daily	globally	weather comfort condition
ultraviolet index	ultraviolet index	ultraviolet index	text	realtime, hourly, daily	globally	ultraviolet condition
PM25	pm25	PM25	μg/m^3	realtime, hourly, daily	air-quality forecast supported area	PM25 mass concentration
PM10	pm10	PM10	μg/m^3	realtime	air-quality forecast supported area	PM10 mass concentration
O3	o3	O3	μg/m^3	realtime	air-quality forecast supported area	O3 mass concentration
NO2	no2	No2	μg/m^3	realtime	air-quality forecast supported area	NO2 mass concentration
SO2	so2	SO2	μg/m^3	realtime	air-quality forecast supported area	SO2 mass concentration
CO	co	CO	mg/m^3	realtime	air-quality forecast supported area	CO mass concentration
AQI	aqi	AQI by China standard	0~500	realtime, hourly, daily	air-quality forecast supported area	AQI by China standard

The nowcasting service

We provide two kind of nowcasting service:

• pointwise API calls specified by latitude and longitude
• forecasted weather radar images

The AI technology behind

Since the founding at 2014, we always dedicated in improving the algorithms for years, there are many works behind the services.

the 1st generation denoise algorithm

the 3rd generation of precipitation forecast algorithm

the comparison of 1st and 2nd generation air quality forecast

The reliable and stable backend

• Scalability: the public service pool can offer 300M ~ 800M API calls per day and can scale up on demanding
• Availability: the availability of the public service pool for the past year is at 99.94%

the capacity and availability monitoring platform

the technical architecture behind

We can offer private service pool with better availability for large-demanding clients

The team behind

the team members after the annual party

the office and working environment

Contact us

Email: api@caiyunapp.com