The "Advanced Data" block in the premium dashboard shows four key agronomic indicators. Until now they always calculated against your city. With Fields, each indicator recalculates over the active target's coordinates.
ET0 — reference evapotranspiration
The water lost by the reference crop (well-watered grass) per day, in millimeters. Use it to calculate how much to irrigate.
- Calculated using the Penman-Monteith method (FAO standard) with WeatherKit or yr.no data depending on your provider
- The value varies with temperature, humidity, wind, and solar radiation — a Field in a windy zone can have higher ET0 than the city
- Shows current day value + 7-day trend
If your farm's ET0 is consistently higher than what your irrigation system assumes, it's worth recalibrating your application rates.
Frost
Shows the expected minimum for the current night and the frost probability in the coming hours.
- If the target is a Field with a defined crop (vineyard, orchard), the "alert" threshold adjusts automatically — for a vineyard, 2°C is already cause for concern
- For the minimum we use the hourly forecast; for probability we combine forecast + historical data for the area
- The Vigía "Frost alert" push fires when this number crosses your configured threshold
Water balance
Difference between rainfall + irrigation (input) vs ET0 (output) over the last N days. Positive means available water; negative means deficit.
- Rainfall input is measured at the Field's anchor city (irrigation is not measured — enter it manually for accuracy)
- The chart shows cumulative balance over 30 days, with the "water stress" line (threshold where the crop starts to suffer)
AQI — air quality index
Air quality at the target. Useful for planning spraying operations (with high AQI, droplets get contaminated) or extended manual work.
- Data from OpenAQ with variable resolution by zone
- Shows current AQI + main pollutants (PM2.5, ozone, NO2)
- The "Air quality" push fires if AQI crosses the threshold you configure
What about background workers?
The first three update every hour (backend cron workers). AQI updates every 30 minutes. You don't need to open the app — data is fresh when you arrive.
What if my Field's area is very isolated?
For workers to compute, each Field is linked to an anchor city (the nearest one in the database). If your Field is in the middle of nowhere, 30 km from any city, the system creates a "satellite" City to anchor the workers — see "How the anchor city is chosen".