OpenWeatherMap provides all essential weather data for a specific location:
  • Current weather
  • Minute forecast for 1 hour
  • Hourly forecast for 48 hours
  • Daily forecast for 8 days
  • National weather alerts
  • Historical weather data for 40+ years back
This page covers how to use the OpenWeatherMap API within LangChain.

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Installation and Setup

  • Install requirements with:
pip install pyowm
  • Go to OpenWeatherMap and sign up for an account to get your API key here
  • Set your API key as OPENWEATHERMAP_API_KEY environment variable

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Wrappers

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Utility

There exists a OpenWeatherMapAPIWrapper utility which wraps this API. To import this utility: 
from langchain_community.utilities.openweathermap import OpenWeatherMapAPIWrapper
For a more detailed walkthrough of this wrapper, see this notebook.

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Tool

You can also easily load this wrapper as a Tool (to use with an Agent). You can do this with: 
import os
from langchain_community.utilities import OpenWeatherMapAPIWrapper

os.environ["OPENWEATHERMAP_API_KEY"] = ""
weather = OpenWeatherMapAPIWrapper()
tools = [weather.run]
For more information on tools, see this page.