
PulveCast: Spray Weather
Delta T, drift & inversion
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Free
In-App Purchases
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About
Spray now or wait? PulveCast answers with one colour for every hour — green, yellow or red — checked against the limits of your own equipment, crop and nozzle.
Built for agricultural spray drones, tractor boom sprayers and self-propelled sprayers. Before you fill the tank, see if the weather window is safe and efficient, and which parameter closes it.
WHAT PULVECAST CHECKS, HOUR BY HOUR
• Delta T — the best single indicator of droplet evaporation (ideal 2–8 °C by default)
• Relative humidity and dew point
• Spray drift risk — wind speed crossed with your nozzle's droplet class, Very Fine to Ultra Coarse
• Thermal inversion — forecast temperature at 80 m against 10 m, the classic dawn hazard
• Wind speed, gusts and direction against your equipment's ceiling
• Temperature, rain probability, cloud cover and visibility
• For drones: Kp index and visible GPS, GLONASS, Galileo and BeiDou satellites for RTK accuracy
FREE, NO ADS, NO ACCOUNT
• Spray verdict for the day, with the reason for every yellow or red hour
• Best spray windows of the day, and the forecast shared as an image on WhatsApp
• Delta T, humidity, dew point, drift, inversion, wind and gusts
• Equipment settings: spray drone, tractor or self-propelled sprayer
• Presets for 18 agricultural drone models from DJI Agras, XAG, Hylio and TTA, with their wind and temperature limits
• Pre-operation checklists
• km/h, m/s, mph or knots · °C or °F · metres or feet
• Last forecast kept offline for the far end of the farm
• 16 languages
PULVECAST PRO
• Multi-day planning and the full hourly forecast table
• Wind compass
• Best spray windows for 7 days, with a phone alert before each one
• Several drones, each with its own flight limits
• Operation planner, application log with spreadsheet export, and sensitive sides of each saved field (homes, apiaries, water) marked on its map, with a warning and a phone notification when the drift heads there
• Spray calculator: droplet class against wind
• Crop presets for soybean, corn, sugarcane, cotton, wheat, coffee, beans, rice, sorghum, peanut, potato, tomato, citrus, grape, banana, eucalyptus and pasture, or your own thresholds for any crop
• No-fly zone map with official zones and height limits (plus DJI zones), 24-hour Delta T and humidity history, favourite locations
• Premium forecast sources: WeatherAPI and Apple WeatherKit
Every threshold can be changed to match your own operating standard. PulveCast is decision support based on weather forecasts: the product label and local regulations always prevail.
PulveCast Pro Monthly is an optional 1-month auto-renewable subscription. Eligible accounts get the store's free trial. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Guides on Delta T, drift, thermal inversion and drone spraying rules: https://pulvecast.com
Questions or ideas: support@pulvecast.com
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What's New in PulveCast
1.4.36
November 9, 2026
Team plans and company access are easier to manage. Configure equipment, organise service orders and manage notifications with fewer steps. We also improved sync reliability and overall stability.
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Subscriptions & In-App Purchases
PulveCast Team
Pro + Cloud for up to 5 app users. Monthly plan.
$14.991 Month








