Check air quality from government monitors near you or anywhere in the world.
Connects to OpenAQ's global network of air-quality monitoring stations. Find stations by location or country, read current pollutant levels (PM2.5, PM10, NO2, O3, CO and more), and view historical trends. Real measured data from reference monitors and low-cost sensors.
Try asking Muse: "What's the air quality like in my neighborhood right now?"
Source: Found in the official MCP Registry (io.github.cyanheads/openaq-mcp-server) · First listed September 25, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 6 h ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://openaq.caseyjhand.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
OpenAQ is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://openaq.caseyjhand.com/mcpResponse time at the last check: 41ms. Worked in 0% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
openaq_find_locationsFind air-quality monitoring stations (measured by physical sensors, not modeled) near a point, within a bounding box, or by country, optionally narrowed to one parameter, one station class (reference monitors or low-cost sensors, mobile or fixed), or one provider network. Returnsopenaq_get_readingsLatest measured value for every sensor at a monitoring station — the current-conditions tool. Returns one record per parameter, each with the value, its unit, the UTC and local timestamp, and the sensor id, joined so every value carries its pollutant and unit (the raw latest feedopenaq_get_measurementsHistorical measurement series for one pollutant at one station over a date range — for trend analysis and "was last week worse than the monthly average?". Pass a locationId and a parametersId and work in stations — you get the series for that pollutant at that station. Choose aggopenaq_list_parametersCatalog of every measurable pollutant and its canonical unit: id, code, display name, unit, and a one-line description (pm25, pm10, o3, no2, so2, co, bc, and more). This is the unit-disambiguation reference — the same pollutant exists under several ids with different units (CO isopenaq_list_countriesCatalog of country-level coverage: id, OpenAQ country code, name, the date span of available station data (datetimeFirst/datetimeLast), and which parameters are measured anywhere in that country. The availability check before a regional sweep — answers "which countries have NO2 mopenaq_dataframe_queryRun a read-only SQL SELECT against the measurement tables openaq_get_measurements staged on a DataCanvas. Reference tables by the name the measurements call returned (measurements_<sensorId>). For aggregation (monthly means, exceedance counts) and cross-sensor comparison over seropenaq_dataframe_describeList the tables and columns staged on a DataCanvas so you can write valid SQL for openaq_dataframe_query without guessing column names. Returns each measurement table (measurements_<sensorId>) with its row count and column names. Requires DataCanvas to be enabled.https://openaq.caseyjhand.com/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use OpenAQ to help me. It is a free service with an MCP server at https://openaq.caseyjhand.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (November 13, 2026, 09:00 UTC) the endpoint was having trouble, answering in 41ms. Over the last 7 days it answered 0% of health checks. It is checked every 15 minutes.
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 7 tools, including openaq_find_locations, openaq_get_readings, openaq_get_measurements, openaq_list_parameters. For example, you could ask Muse: "What's the air quality like in my neighborhood right now?"
This listing was added from public sources (Found in the official MCP Registry (io.github.cyanheads/openaq-mcp-server)). If you build OpenAQ, claim it to correct the details and get your badge.
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