Better than the weather app that came with your phone.
Next-hour forecasts checked against 112 research grade US Climate Reference Network rain gauges.
Hyper-local precipitation data
The best hyper-local precipitation data
Precip isn't your typical weather app. We use high-resolution radar to drive better accuracy and precision. We've got the data to prove it.
Observe Radar See the storm in motion
Predict the Storm Forecast path and intensity
Measure What Fell Record calibrated observations
Better observations
Precip starts with what the sky is doing right now
Instead of just relying on forecasts, Precip uses high-resolution radar and quality-controlled gauge data to observe precipitation. We continually refine our data to be the most accurate and useful source for monitoring rainfall, snow, and other types of precipitation.
Minute-by-minute predictions
Better inputs make the best nowcast
Precip's in-house nowcast starts from a high-resolution view of the storm as it is happening, then tracks where precipitation will move through the next hour. It is built to keep you from getting wet unexpectedly.
1 kmspatial resolution
5 minforecast steps
60 minforecast horizon
Nowcast benchmarks
Gauges on the ground prove it's the best
We tested the top nowcasts (short-term minute-by-minute forecasts) against independent rain gauges and airport sensors across the US. Precip comes out on top.
85% better than Apple Weather at calling rain
52% fewer missed rain events than Google Weather
#1 at every lead time from 10 to 60 minutes
Ahead of the weather industry at every minute of the hour.
Accuracy checked every 10 minutes of the hour against 215 airport weather sensors using weatherindex.ai.
- Precip .437 → .364
- Rainbow AI .412 → .342
- AccuWeather .343 → .249
- The Weather Company .320 → .267
- Vaisala .288 → .225
Apple cries wolf. Google lets you get drenched.
The real world experience of just using what's built into your phone
Third-party names are trademarks of their respective owners.
How the measured record is built
Why Precip has the best historical precipitation data
Radar and gauges
The Precip system uses observational data to track what actually happened, including 180 Doppler radar stations and a quality-controlled network of rain measurement stations.
Aligned in time and space
Raw data gets processed through a series of scientific models that convert raw information into easy to understand precipitation amounts. Part of that process includes aligning data from multiple sources into the correct hourly time periods for reliable analysis.
A refined ensemble
The final stage creates a proprietary ensemble of the various model outputs to deliver the highest quality blend of low latency and highly refined data, correctly projected for geospatial analysis.
Coverage and resolution
We dial up the resolution
Most forecasts run at course resolution, often 5-10km. Precip runs at 1km resolution, with 5 minute updates.
Our rainfall measurements in the US quantify rainfall for an area of roughly one half mile squared, or 160 acres. In Canada it is approximately 1 square mile or 250 hectares. Rainfall can vary even within an area that small, so our models provide an average value for the area represented.
See full data availability & specifications 1 km United States
Live rate, nowcast, and measured precipitation
2.5 km Canada
Measured precipitation resolution
Historical precipitation benchmark
Why observations beat forecasts.
Many sources that show historical rain totals only show the most final forecast amount before the actual rain could be measured. Precip uses radar and ground-truth observations as rain happens to create the most accurate possible rainfall totals.
60% more accurate than the NOAA HRRR analysis
275% better rainfall detection (Critical Success Index)
Precip's estimates are the best available, but no rainfall estimate is perfect. Rain gauges themselves can provide inaccurate measurements. For example, wind turbulence can cause an average error rate of 2% to 10% when using gauges to measure rainfall. Read why measuring rain with gauges is hard.
The figures below are excerpts from a 2023 benchmarking study that compared Precip to the High Resolution Rapid Refresh forecast model output and the Integrated Surface Database ground observations. The report analyzes rainfall events at various accumulation thresholds against the corresponding gauge data.
Data provenance
Third-party data sources
Precip combines our own models and processing with authoritative third-party observations and forecast data.
- NOAA Doppler radar and ground observation data
- Open-Meteo Global multi-day forecast data
- Rainbow AI Global nowcast coverage outside Precip's radar domain
Know what's next. See what actually happened.
Put precision precipitation in your pocket.
Get Precip free on iPhone, Android, and the web.