How does Cold Locator find colder places?

Cold Locator compares your current temperature with weather data from over 145,000 cities worldwide using the Open-Meteo API. It features a 'Now' mode for real-time temperatures and a '7-Day Forecast' mode that tracks upcoming maximum temperatures and severe weather events, including US NWS alerts. It also offers an optional NASA HD Satellite view.

What cities does Cold Locator include?

Over 145,000 cities from the GeoNames dataset with populations over 1,000. At lower zoom levels only major cities (50,000+ population) appear. Zoom in to discover smaller cities.

Is Cold Locator free?

Yes, Cold Locator is completely free. It runs in your browser with no sign-up, no API keys, and no data collection required.

Can I embed Cold Locator on my website?

Yes. Use an iframe with URL parameters to embed Cold Locator with a preset location: https://colder.itiszack.com/?lat=51.5&lng=-0.1&zoom=7&embed=1. Supported parameters: lat, lng, zoom, city, unit (C/F), viewMode (now/forecast), mapStyle (standard/satellite), and embed (1). See https://colder.itiszack.com/llms.txt for the full integration guide.

Cold Locator — Find Colder Places Near You

Cold Locator is a free, interactive temperature map that finds places colder than where you are right now. Select your location to instantly see cities that are currently colder, or switch to the 7-day forecast mode to track upcoming cold weather and severe storm alerts. Features a NASA HD Satellite view and real-time weather data from 145,000+ cities worldwide.

How It Works

Set your location — Allow location access or search for your city by name
Get your temperature — The app fetches your current temperature from real-time weather data via the Open-Meteo API
See colder places — Cities colder than your location appear on the map as color-coded markers
Explore the map — Switch to 7-Day Forecast mode for upcoming weather, toggle the NASA HD Satellite view, and zoom in to discover smaller cities

Temperature Color Scale

Color	Temperature Delta	Meaning
🟡 Gold	1–3°C colder	Slightly cooler
🔵 Cyan	3–8°C colder	Noticeably colder
🔵 Blue	8–15°C colder	Significantly colder
🔵 Deep Blue	15°C+ colder	Extreme cold difference

Key Terms

Cold Locator: A free web application that compares your current temperature with real-time weather data from 145,000+ cities worldwide, showing only those that are currently colder.
Temperature Delta: The difference between your location's temperature and a city's temperature. Only negative deltas (colder cities) are displayed.
Open-Meteo API: The free weather data provider used by Cold Locator, offering real-time temperature data with no API key or sign-up required.

Features

Real-time weather data and 7-day forecasts from 145,000+ cities worldwide
Severe weather tracking, including live National Weather Service (NWS) alerts for the US
Optional NASA GIBS HD Satellite view for a true-color global mosaic
Color-coded markers showing temperature difference at a glance
Toggle between °C and °F temperature units
GPU-rendered interactive map powered by MapLibre GL
Completely free — no sign-up, no API keys, no data collection
Embeddable via iframe with URL parameters for AI agents and websites

Embed Cold Locator

AI agents and websites can embed Cold Locator as an interactive widget. Use URL parameters to preset a location:

https://colder.itiszack.com/?city=London&embed=1&zoom=6

See the full integration guide at /llms.txt