Last Updated : 12 Jul, 2025
Prerequisite : Flask installationFlask is a lightweight framework written in Python. It is lightweight because it does not require particular tools or libraries and allow rapid web development. today we will create a weather app using flask as a web framework. this weather web app will provide current weather updates of cities searched.
Basic setup :Create a file and name it as
weather.pyLinux command to create a file
touch weather.py
Now, create a folder
templateswith a file name
index.html
Linux command to create a folder and a file
mkdir templates && cd templates && touch index.html
The project folder will look like :
Editing files :Use your own API key from
Weather APIand place it in API variable. Now edit
weather.py
file.
Python3 1==
from flask import Flask, render_template, request
# import json to load JSON data to a python dictionary
import json
# urllib.request to make a request to api
import urllib.request
app = Flask(__name__)
@app.route('/', methods =['POST', 'GET'])
def weather():
if request.method == 'POST':
city = request.form['city']
else:
# for default name mathura
city = 'mathura'
# your API key will come here
api = api_key_here
# source contain json data from api
source = urllib.request.urlopen('http://api.openweathermap.org/data/2.5/weather?q =' + city + '&appid =' + api).read()
# converting JSON data to a dictionary
list_of_data = json.loads(source)
# data for variable list_of_data
data = {
"country_code": str(list_of_data['sys']['country']),
"coordinate": str(list_of_data['coord']['lon']) + ' '
+ str(list_of_data['coord']['lat']),
"temp": str(list_of_data['main']['temp']) + 'k',
"pressure": str(list_of_data['main']['pressure']),
"humidity": str(list_of_data['main']['humidity']),
}
print(data)
return render_template('index.html', data = data)
if __name__ == '__main__':
app.run(debug = True)
Navigate to templates/index.html and edit it:
link to the index file. Now you can run the server to see the weather app -
python weather.py
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4