Global D+1 temperature ranking
Mean absolute error (MAE) across all tracked cities. Lower is better.
OfficialSettled data.
PreliminaryMay still shift.
Thin sampleLimited data.
1
MET Norway
Preliminary0.55°C480 samples10 cities
Requires attribution
2
Pirate Weather
Preliminary0.71°C480 samples10 cities
3
Bright Sky
Preliminary0.76°C478 samples10 cities
Requires attribution
4
Visual Crossing
Preliminary0.78°C478 samples10 cities
5
WeatherAPI
Preliminary0.90°C480 samples10 cities
Reference providers
These providers are shown for context but are not included in the public ranked comparison.
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Open-Meteo
PreliminaryDisplay only0.83°C482 samples10 cities
Shown for reference, not included in the ranked comparison under current provider policy.
Requires attribution
—
Meteosource
PreliminaryReview pending0.65°C338 samples10 cities
Policy review pending; not ranked publicly yet.
—
Tomorrow.io
PreliminaryReview pending0.79°C480 samples10 cities
Policy review pending; not ranked publicly yet.
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Meteoblue
OfficialReview pending0.86°C210 samples10 cities
Policy review pending; not ranked publicly yet.
Requires attribution
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World Weather Online
PreliminaryReview pending0.89°C478 samples10 cities
Policy review pending; not ranked publicly yet.
—
OpenWeather
PreliminaryReview pending0.94°C482 samples10 cities
Policy review pending; not ranked publicly yet.
Scores represent average temperature forecast error in °C for the D+1 horizon. Lower MAE indicates more accurate forecasts.