GO
Good to spray
Guide only — the product label always sets the legal wind range, droplet size, and buffers. This tool reflects common extension guidance (typical allowable wind ~3–10 mph; never spray in a temperature inversion).
Why each factor matters
- Wind 3–10 mph is the sweet spot on most labels — enough to show direction, not enough to blow product off-target.
- Dead calm (under ~3 mph) often signals a temperature inversion — fine droplets hang and slide sideways for miles. Don't spray.
- Gusts spike drift even when the average looks fine.
- Hot + dry (high temp, low humidity) evaporates fine droplets fast, raising drift and cutting coverage.
- Sensitive areas downwind mean bigger buffers, coarser droplets, or waiting for a better window.
Before every flight — quick checklist
- Read the label's wind, droplet, and buffer requirements
- Measure wind speed and direction at the site
- Rule out an inversion (calm, cool, smoke/dust hanging flat)
- Pick the coarsest droplet that still covers
- Keep the buffer to water, homes, hives, and sensitive crops
- Log conditions (wind, temp, time) for your records
Reflects standard extension/label drift-management guidance. Learn more in our drift management guide. Always follow the specific product label and your state's rules.
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