Pour weather & evaporation risk
Estimate surface water evaporation and check live conditions for your job site. Avoid plastic shrinkage cracking before you place the concrete.
Search a location to load the pour forecast.
Step 2
Evaporation risk calculator
ACI 305 estimation of plastic shrinkage cracking risk based on mix temp and climate.
70°F
75°F
50%
10 mph
Evaporation rate
0.433 lb/ft²/hr
High risk
Plastic shrinkage cracking very likely. Use windbreaks, fog nozzles, evaporation retarders, or reschedule the pour.
Threshold guidance: < 0.10 low, 0.10–0.20 caution, > 0.20 high. Menzel/ACI 305 simplified formula for planning only.
Ready to schedule this pour?
Dispatch can advise on mix design, retarders, and delivery windows.