Build a Weather App Using Claude Code + Ollama

A few days ago, I had an idea — what if I could build a complete app without writing a single line of code?

Not using templates. Not copying from Stack Overflow. Just pure prompts.

So I decided to test it.

The goal was simple: build a clean, animated weather app showing live conditions for Indian cities.

Overview

This weather app is built entirely using Claude Code — just prompts, not a single line of code.

Install Claude Code

First step — getting Claude running locally.

irm https://claude.ai/install.ps1 | iex

Fix PATH

$env:Path += ";C:\Users\<user>\.local\bin"
claude --help

Install Ollama

Next, install Ollama — this is what powers the models locally.

Download from https://ollama.com/download

ollama --version

Launch Claude

Once everything is installed, fire up the CLI.

ollama launch claude

Recommended Models

You’ll be asked to choose a model. These work well:

• qwen3.5
• glm-5
• minimax-m2.7 (recommended)
• kimi-k2.5

Run Local Model

If your machine is powerful, go fully local.

ollama launch claude --model gpt-oss:20b

Prompt: Build Weather App

Now comes the fun part — just describe what you want.

create a weather app with live weather conditions in Delhi, Mumbai, and Kolkata, with animated backgrounds

Output

Within seconds, Claude generates a complete project:

• index.html
• style.css
• script.js

Prompt: Modify App

Want changes? Just ask.

Modify the app:
- Show one card per screen
- Add next/previous navigation
- Keep background consistent

What surprised me the most wasn’t just that it worked — it was how fast it worked.

Something that would normally take days was done in minutes.

This changes how we build.

Not by replacing developers — but by giving them superpowers.