Temperature Heatmap — Free Heatmap Template

This Temperature Heatmap template turns a week of temperature readings into a color-coded grid, so warmer days glow brighter than cooler ones at a glance. The sample data tracks Monday through Sunday (22, 24, 21, 26, 28, 30, 27), with the heat building toward a Saturday peak of 30. It's a ready-made starting point for visualizing any daily temperature or sensor reading without building a chart from scratch.

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Free to use on your own website — WordPress, Wix, or any platform. Paste one line and it works instantly, resizing to fit.

About This Heatmap Template

This Temperature Heatmap template turns a week of temperature readings into a color-coded grid, so warmer days glow brighter than cooler ones at a glance. The sample data tracks Monday through Sunday (22, 24, 21, 26, 28, 30, 27), with the heat building toward a Saturday peak of 30. It's a ready-made starting point for visualizing any daily temperature or sensor reading without building a chart from scratch.

It's a ready-made Heatmap you can open and edit in seconds — replace the sample numbers with your own, restyle it, and download a publication-ready image, all free and in your browser.

Template Data

This template ships with the sample data below. Open it in the editor to swap in your own figures:

Categories: Mon, Tue, Wed, Thu, Fri, Sat, Sun  ·  1 data series

When to Use This Template

How to Use It

  1. Open the template — click "Open This Template in the Editor" to load it with its sample data.
  2. Edit the data — type your own labels and values, or paste a column straight from a spreadsheet.
  3. Customize & export — pick colors, add a title, then download as PNG, SVG, or PDF. No signup, no watermark.

Frequently Asked Questions

Can I replace the sample temperatures with my own readings?

Yes. Click "Open in editor" and edit the data table directly, changing the Mon-Sun values or adding more days. The heatmap recolors itself instantly as you type, so you can drop in your own week of readings in seconds.

Is it free, and how do I save the finished heatmap?

It's completely free with no signup. Everything runs in your browser, and when you're done you can export the heatmap as a PNG, SVG, or PDF to use in reports, slides, or anywhere else.

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