Weather observations you can actually query

Eighty-six years of station data from twelve national networks, deduplicated, quality-flagged and served in one consistent schema. Free for non-commercial use, no attribution gymnastics.

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4 812active stations

86 yrlongest continuous record

19.4 bnquality-checked observations

0.31%records flagged suspect

Berlin-Tempelhof · air temperature

Station 10384 · hourly mean, last 60 hours · °C

observedclimatological normal 1991–2020QC: passed 60/60

Relative humidity

Same station · last 40 hours · %

observed

Latest ingest by network

Delay measured from observation timestamp to availability in the API

Network	Stations	Median delay	p95 delay	Status
DWD (Germany)	1 042	4 min	11 min	nominal
KNMI (Netherlands)	318	6 min	14 min	nominal
Météo-France	901	9 min	27 min	nominal
SMHI (Sweden)	604	5 min	12 min	nominal
NOAA GHCN-h	1 947	22 min	1 h 08	degraded

What you get

One schema

Every network reports differently. We map all of it onto sixteen canonical variables with SI units and explicit missing-value semantics, so you stop writing per-source adapters.

Honest quality flags

Each value carries a flag: passed, suspect, corrected or estimated. We never silently interpolate — gaps stay gaps unless you ask for a filled series.

Stable identifiers

Stations keep their identifier across relocations, with a documented move history. Series that should not be compared across a move are marked as such.