air-quality-mcp

Real, current air quality (US AQI, PM2.5, PM10, ozone, and more) for any city, free, in one command.

pip install air-quality-mcp   # or: uvx air-quality-mcp

Then ask your agent: "what's the air quality in Bangkok?" or "is it safe to run outside in Berlin today?"

No API key. No signup. Free.

Tools

Tool	What the model sees it for
get_air_quality(city)	Current air quality for a city -- US AQI, PM2.5, PM10, ozone, NO2, SO2, CO, plus a plain-language category. "What's the air quality in X", "is it safe to go outside in Y", "how polluted is Z".

city is a free-text place name (e.g. "Bangkok", "Berlin", "Springfield, US").

Example

> get_air_quality("Bangkok")
{
  "location": {
    "name": "Bangkok",
    "country": "Thailand",
    "admin1": "Bangkok"
  },
  "us_aqi": 27,
  "aqi_category": "Good",
  "pm2_5": 5.4,
  "pm10": 6.4,
  "ozone": 36.0,
  "nitrogen_dioxide": 14.1,
  "sulphur_dioxide": 3.9,
  "carbon_monoxide": 1861.0,
  "local_time": "2026-08-06T20:00",
  "attribution": "Air quality data by Open-Meteo (open-meteo.com)"
}

> get_air_quality("Berlin")
{
  "location": {
    "name": "Berlin",
    "country": "Germany",
    "admin1": "State of Berlin"
  },
  "us_aqi": 51,
  "aqi_category": "Moderate",
  "pm2_5": 5.5,
  "pm10": 9.6,
  "ozone": 102.0,
  "nitrogen_dioxide": 2.6,
  "sulphur_dioxide": 1.0,
  "carbon_monoxide": 145.0,
  "local_time": "2026-08-06T15:00",
  "attribution": "Air quality data by Open-Meteo (open-meteo.com)"
}

aqi_category is computed from us_aqi using the standard US AQI bands: 0-50 Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, 151-200 Unhealthy, 201-300 Very Unhealthy, 301+ Hazardous. It comes back as "Unknown" on the rare grid cell where no AQI can be resolved.

How it's free

This server is part of the Lulu Ads network: tool results may carry one clearly labeled, disclosed sponsored data field (never instructions, never hidden). That sponsorship pays the hosting, so the lookup stays free. Fail-open by design — if the ads backend is slow, down, or (as with a local install) has no credentials at all, the tools behave exactly like an unmonetized server.

Run your own MCP? The same one-line integration is open to every publisher — getlulu.dev/publishers, 70% rev share.

Data

Air quality data by Open-Meteo (free, no API key required). This project is not affiliated with Open-Meteo.

Self-hosting over HTTP

pip install fastmcp lulu-ads httpx uvicorn
MCP_TRANSPORT=http AIRQUALITY_LOCAL_DEV=1 python server.py   # serves http://localhost:8080/air-quality/mcp