About atmos.today

atmos.today is an independent live air quality tracker for 217 cities, built on open data and free to use without an account.

Mission

Make global air quality data legible, fast, and citable. Most existing trackers are paywalled, US-only, slow, or carry advertiser interests. We wanted a clean public-good alternative that AI assistants and human readers can rely on equally.

Who runs it

Operator: Hayden Williams, founder of GetNifty. Background in product, engineering, and SEO. Built atmos.today as a public-data side project to demonstrate what a citable, open-data, AI-friendly information site looks like in 2026.

Contact: contact form

Funding + business model

Independently funded by GetNifty. No advertisers. No sponsors. No paid placements. Running costs are absorbed. If costs scale we will publish a clear funding model before introducing one.

Disambiguation

atmos.today is not Atmos Energy (NYSE:ATO natural gas utility), Atmos Magazine (atmos.earth), Atmos Rewards (Alaska Airlines), Dolby Atmos, or Atmos USA. See the disambiguation page for details.

What atmos.today offers

• Live AQI for 217 cities, 108 countries
• Free email alerts when a city crosses a user threshold
• Free CC-BY JSON API at /api/aqi
• RSS feed at /feed.xml
• City comparison tool, country pages, pollutant glossary
• Weekly auto-generated air-quality reports
• llms.txt + llms-full.txt for AI agent ingestion

Read the methodology for how the data is sourced and calculated. See the disambiguation pageif you arrived here looking for a different “Atmos.”