Will It Rain Today? Rain Probability Percentage vs. Rainfall Amount in mm

One of the most common weather queries in India is "Will it rain today?" (आज बारिश होगी क्या? / आज पाऊस पडेल का?). KisanMitra provides two distinct, scientifically verified metrics to eliminate confusion between probability and volume:

• Rain Probability (%): The statistical likelihood of precipitation occurring at any point within the district over the forecast period. A 70% probability means there is a high likelihood of rain, but does not indicate how heavy it will be.
• Expected Rainfall (mm): The physical depth of water accumulation forecasted. For example, a 75% chance of 2 mm represents a high probability of light drizzling or gentle showers, whereas a 35% chance of 50 mm indicates a localized risk of intense convective cloudbursts or thunderstorms.

Farmers can cross-reference the live Doppler radar reflectivity (dBZ) layer: echoes between 30 and 45 dBZ indicate moderate steady rain, while echoes exceeding 45-50 dBZ indicate severe convective downpours, hail, or squall lines requiring immediate field drainage action.

Relative Humidity (%) & Dew Point: Agricultural Implications

Relative humidity measures the percentage of moisture saturation in the ambient air. In agricultural management:

• High Humidity (>85%): Prolonged moisture saturation prevents leaf transpiration and creates microclimate conditions favorable for fungal spore germination, powdery mildew, blast in paddy, and leaf spot in groundnut and soybean.
• Low Humidity (<30%): Accelerates evapotranspiration in standing crops. In arid and semi-arid zones (e.g. Vidarbha, Marathwada, Saurashtra, Western Rajasthan), low humidity combined with high winds necessitates immediate drip or furrow irrigation to prevent plant wilting.

Temperature & Heat Stress Index for Indian Crops

KisanMitra tracks current temperature, maximum daytime temperature, minimum night temperature, and apparent ("feels-like") heat stress:

• Daytime Heatwaves (>40°C): Triggers IMD Heatwave Alerts. Prolonged temperatures above 40°C during crop flowering and pollination phases (e.g. wheat grain filling, mustard pod development) cause pollen sterility and reduced yield. Farmers are advised to provide light nocturnal irrigation.
• Diurnal Temperature Range: The gap between maximum and minimum temperatures dictates crop respiration and sugar accumulation in sugarcane, horticulture, and table grapes.

Wind Speed (km/h) & Direction: Safe Chemical Spraying Windows

Spraying pesticides, fungicides, or foliar nutrients requires precise wind telemetry:

• Ideal Window: Wind speeds between 3 km/h and 12 km/h.
• High Wind Risk (>15 km/h): Causes off-target droplet drift, wasting costly chemicals, contaminating adjacent crops, and creating livestock hazards. Tall crops like sugarcane, banana, and hybrid maize face lodging risks when wind gusts exceed 45 km/h.

Cloud Cover (%) & Solar Radiation for Farming

Cloud percentage (0-100%) dictates the level of photosynthetically active radiation (PAR) reaching the crop canopy, as well as operational hours for solar agricultural pumps. Overcast skies (>80% cloud cover) for extended periods decrease photosynthetic efficiency and promote pest proliferation.

7-Day & Hourly Forecast Horizons Across 594 Indian Districts

Every district across Maharashtra, Gujarat, Uttar Pradesh, Punjab, Haryana, Madhya Pradesh, Bihar, West Bengal, Rajasthan, Karnataka, Andhra Pradesh, Telangana, Tamil Nadu, Kerala, Odisha, and all other States is covered by localized hourly and 7-day numerical forecasts. Centroid coordinate mapping ensures farmers receive actionable guidance tailored to their agricultural calendar.

Frequently Asked Questions (FAQs)

How often is the live Doppler weather radar updated?

RainViewer multi-band radar mosaics are synchronized every 10 minutes from IMD and global weather radar networks, tracking real-time precipitation cells, cyclone rainbands, and thunderstorm formation.

What is the difference between rain probability and rainfall quantity?

Rain probability (%) indicates how likely it is to rain anywhere in the district, while rainfall quantity (mm) measures how much water is expected to accumulate on the ground.

How does KisanMitra help farmers plan pesticide spraying?

By checking hourly wind speed and precipitation probability. If wind is under 12 km/h and rain probability is under 20% for the next 4 hours, chemical applications can proceed without risk of wash-off or drift.

Are all 28 Indian States and Union Territories included?

Yes, KisanMitra includes all 594 administrative district boundaries based on Survey of India and Census baselines, with live localized Open-Meteo NWP weather feeds.