PulveCast: Spray Weather

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