Today’s rainbow opportunity
—/100
Checking the sun, mist and clouds…
Connecting to the National Weather Service.
Best window—
Best viewpoint—
Confidence—
Experimental model estimate — not a guarantee.
Live Niagara Falls decision tool
Will there be a rainbow at Niagara Falls today?
Find the best time and the best place to stand. The model combines the sun’s position with live NWS clouds, wind and the falls’ mist geometry.
See today’s forecastHero: Rlevse / Wikimedia Commons · CC BY-SA 3.0
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Today, hour by hour
When the geometry is best
Each bar shows the strongest modeled viewpoint at that time.
Building today’s 10-minute model…
Look before you go
Live Niagara Falls cameras
Use the cameras as a real-world check for direct sun, mist and visibility. Third-party feeds can occasionally be offline.
Fallsview Casino / EarthCam
Horseshoe Falls live view
Useful for checking whether direct sunlight is actually reaching the main mist plume right now.
Open camera source →Niagara Falls Live
Alternate falls view
A second visual check for cloud breaks and overall visibility across the falls.
Open camera source →Camera feeds are provided by their respective third-party operators and are shown for situational awareness; they are not inputs to the forecast score.
Where to stand
Best Niagara Falls rainbow viewpoints today
The ranking changes as the sun moves and wind shifts the mist plume.
Ranking viewpoints…
Plan ahead
5-day rainbow outlook
If today is poor, the tool looks for the next stronger period.
Building the outlook…
What makes this different
A weather forecast cannot tell you where a rainbow will be
Niagara already supplies the water droplets. The missing pieces are direct sunlight and geometry. A primary rainbow appears about 42 degrees from the antisolar point — the point directly opposite the sun. This tool calculates the sun position every 10 minutes, estimates where the falls’ mist is being pushed by the wind, then evaluates that mist from five public viewpoints.
Direct sunlight is non-negotiable. Cloud cover is still decisive: perfect geometry does not help if a cloud blocks the sun, which is why the result is an opportunity score rather than a promise.
Model details and limitations
The model uses NWS forecast-grid cloud cover, wind speed, wind direction, precipitation probability and visibility when available. It approximates each falls’ mist source and plume displacement. Local spray is turbulent and clouds can change faster than a forecast grid, so real-world conditions can beat or miss the model.
Quick answers
Niagara Falls rainbow FAQ
What is the best time to see a rainbow at Niagara Falls?
There is no fixed hour. The best time depends on the season, clouds, wind and where you stand. The live forecast above identifies the strongest window instead of using a generic “morning” or “afternoon” rule.
Does it need to be raining?
No. Niagara Falls continuously creates a large mist plume. Sunlight hitting those airborne droplets at the correct angle can produce a rainbow on a dry day.
Which side of Niagara Falls is best?
Both sides can work. The model scores U.S. viewpoints such as Terrapin Point, Prospect Point and Luna Island alongside Canadian viewpoints such as Table Rock and Queen Victoria Park.
Why did the rainbow disappear even though the score was high?
A small cloud passing in front of the sun can shut the effect off almost instantly. Wind also moves the mist. Use the score as a decision aid, then use the live cameras above to see whether direct sun is actually hitting the spray.