TrulyAirAir quality you can trust, right inside ChatGPT.
Ask "What's the air like in Delhi?" or "Is it safe to run outside near me?" TrulyAir answers with the official US EPA Air Quality Index from the nearest monitors, and tells you plainly when a value is a model estimate instead of a measurement.
How to use TrulyAirMeasured by U.S. EPA AirNow, 3.1 km away. Main pollutant: PM2.5.
How TrulyAir stays accurate
Measured first
Official EPA AirNow readings for the US, Canada and Mexico, plus reference monitors worldwide when available.
Honest estimates
Where no monitor is nearby, values come from the Copernicus (CAMS) air quality model and are always labeled as estimates.
Exact EPA math
The 2024 EPA breakpoints, NowCast averaging and EPA health guidance, verified against EPA's own worked examples.
Forecasts
Daily AQI for up to four days, computed with EPA's daily rules from model forecasts.
How to use it
In ChatGPT, mention @TrulyAir and ask about any place. TrulyAir shows a card with the AQI, its category, each pollutant and what the EPA advises.
Developers can connect TrulyAir as a custom MCP server in ChatGPT (or any MCP client) with this URL:
https://trulyair.com/mcp
Data sources
| Source | What we use |
|---|---|
| U.S. EPA AirNow and its reporting agencies | Hourly NowCast AQI from monitors (preliminary data) |
| OpenAQ | Reference monitor concentrations outside AirNow coverage |
| Copernicus Atmosphere Monitoring Service via Open-Meteo | Model estimates and forecasts. Contains modified Copernicus Atmosphere Monitoring Service information; neither the European Commission nor ECMWF is responsible for any use of it. |
| GeoNames via Open-Meteo | Place name search |
TrulyAir is informational and is not medical advice. In an emergency, follow guidance from local authorities.