Weather for your exact job site, scored for concrete. PourDay projects the evaporation rate for every day in a 16-day window and flags each one GO, CAUTION, or WARNING — so you schedule around the bad days instead of canceling on them at 5am.
A cancellation at 5am means idle crews, short-load fees, and a call to the GC nobody wants to make. The fix isn't a better weather app — it's seeing the high-evaporation days coming a week or two out, while you can still move the schedule.
Hyper-local conditions by zip code or pin — not the nearest airport. Save up to 10 job sites, each with its own forecast.
Every day shows a projected evaporation rate and a GO / CAUTION / WARNING built on the ACI 305R formula — the number that actually decides a pour.
Drill into any day for hour-by-hour projections so you can time placement to the safest window — usually early morning.
Get notified when conditions at a saved site shift into CAUTION or WARNING, so a changing forecast never blindsides you.
The 0–3 day forecast is dead reliable — plan around it with confidence. Days 4–16 are directional: good enough to schedule and to catch a hot, dry, windy stretch early, but always re-check the morning of the pour before the truck rolls. Honest beats optimistic when it's your slab on the line.
New to the scoring? See how PourDay works or run conditions yourself in the evaporation rate calculator.
The 16-day job-site forecast, real-time pour conditions, and pour logging — free for contractors on iOS and Android.