OpenAQ

live EnvironmentHealthClimate

Get current air quality readings from worldwide sensor stations. Filter by country code (e.g., "US", "IN").

4 tools
0ms auth
free tier 50 calls/day

Tools

air_quality_near

Get the latest air-quality readings (PM2.5, PM10, O3, NO2, SO2, CO, etc.) at the monitoring station NEAREST to a latitude/longitude. PREFER for "air quality near me", "what is the air quality at <coor

No parameters required.

▶ Try it
find_stations

Find OpenAQ air-quality monitoring stations by location: coordinates+radius (nearest first), a country (ISO 3166-1 alpha-2 code), or a bounding box. Returns station id, name, country, coordinates, and

No parameters required.

▶ Try it
get_latest

Get the latest reading for every pollutant at a specific OpenAQ station (by location id from find_stations). Returns each parameter (PM2.5, O3, NO2, etc.) with its value, units, and measurement time.

No parameters required.

▶ Try it
get_measurements

Get a historical time series (hourly or daily aggregates) for a single OpenAQ sensor (sensor id from find_stations), newest first. Use for pollutant trends over time at one station/parameter.

No parameters required.

▶ Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/openaq/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/openaq/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"air_quality_near","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript 
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("air_quality_near", {});
ask_pipeworx 
// Or ask in plain English:
const answer = await px.ask("get current air quality readings from worldwide sensor stations");