Environment · head-to-head
BreezoMeter Pollen vs PM2.5 Open Data Portal
BreezoMeter's Pollen API was folded into Google Maps Platform after Google's 2023 BreezoMeter acquisition; the old docs.breezometer.com host now redirects straight to Google's own Pollen product page. The live gateway, pollen.googleapis.com, still serves the same daily pollen forecast and heatmap-tile data for a location, just under a Google Cloud API key and Maps Platform billing.
The LASS PM2.5 Open Data Portal aggregates readings from Taiwan's low-cost civic air-quality sensor networks (AirBox, LASS, EPA, and others) into freely downloadable JSON snapshots, refreshed continuously with no key required. It also runs a DCF (Data Calibration Framework) service that publishes machine-learning-corrected PM2.5 estimates per monitoring site.
| BreezoMeter Pollen | PM2.5 Open Data Portal | |
|---|---|---|
| Authentication | API Key | None |
| Pricing | freemium | free |
| Formats | JSON, PNG | JSON |
| CORS | yes | no |
| HTTPS | Yes | Yes |
PM2.5 Open Data Portal needs no API key, while BreezoMeter Pollen requires API Key — pick PM2.5 Open Data Portal to start without signup.