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PM2.5 Open Data Portal (LASS)

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pm25.lass-net.org

The LASS participatory PM2.5 sensing network run by IIS-NRL, Academia Sinica: latest readings per project, calibrated PM2.5 per monitoring site, and the anomaly detection framework's device rankings, emission estimates, indoor/outdoor classification and pollution events.

Runs on your machine under the source's own terms

The crw MCP on your computer calls PM2.5 Open Data Portal (LASS) directly. Calls cost no credits and the data does not pass through fastCRW. Install it once for Claude Code, Cursor, Codex, Windsurf, Gemini CLI or OpenCode, with your fastCRW API key in place of the placeholder:

Read the docs

Capabilities (7)

pm25/adf-device-rankingFree, runs locally

Returns the anomaly ranking record for a single device: timestamp, source, ranking score and device id.

device_id
pm25/adf-emissionFree, runs locally

Returns the estimated emission rate per device, each with device id and rate, from the anomaly detection framework.

No parameters
pm25/adf-indoorFree, runs locally

Returns the anomaly framework's indoor probability rate for each device, with device id.

No parameters
pm25/adf-pollutionFree, runs locally

Returns classified pollution events per device: timestamp, pollution type such as Local Pollution, and device id.

No parameters
pm25/adf-rankingFree, runs locally

Returns the anomaly detection framework's device ranking: each device id with its ranking score and the source network and timestamp.

No parameters
pm25/dcf-latestFree, runs locally

Returns the latest data calibration framework output per monitoring site: site name, date, model, latitude and longitude, consistency score and valid and original MAE.

No parameters
pm25/project-latestFree, runs locally

Returns the most recent measurements from every device in a LASS project: device id, timestamp, PM2.5, PM10, temperature and humidity, with the project's source label and record count.

project

Licence

PM2.5 Open Data Portal by IIS-NRL, AS is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

https://pm25.lass-net.org/languages/en.json

Attribution

Display this wherever you show the data. It arrives on every response as provenance.attributionText.

Source: PM2.5 Open Data Portal / LASS, IIS-NRL, Academia Sinica (CC BY-NC-SA 4.0)

Read the docsBack to the catalog