Degree Day and Disease Severity Maps

Introduction

These maps show either degree day accumulation (useful for estimating pest or plant development), or disease severity accumulation (useful for understanding the risk of onset of certain fungal plant diseases). Generating a map may take 10-15 seconds for the upper Midwest region or 5 seconds for Wisconsin only. Once a map has been generated it will load automatically.

For more information on degree day models or to get data for a specific model or location, click here. For more information on insect pests, visit UW Vegetable Entomology. For more information on plant disease modeling, visit UW Vegetable Pathology. To view these models and data in a more interactive framework, check out our Vegetable and Disease Forecasting Network (VDIFN) website.

Use the options below to view or generate a degree day or disease severity map. Currently it is only possible to get tabular data for degree days on this site from this page, but we may add the ability to download disease severity data in the future.

Degree Day and Disease Severity Maps

Please wait, loading map may take up to 10 seconds...

Model: Base 50°F, upper 86°F (10°C / 30°C)
Date range: 2024-01-01 - 2024-04-22
Units: F
Map extent: Upper Midwest

Choose a degree day model to load:
Model options

Temperature units:
Date range:
Map options: Color scale (leave blank to scale automatically):
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Choose a disease severity model to load:
Model options
Date range:
Map options: Color scale (leave blank to scale automatically):
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