Live clouds (map)
Hourly chart
What these chart values mean
The chart is tuned for backyard astrophotography. Colors and scope emoji are derived from threshold gates. Tap this panel to close.
Scope (🟢 🟡 🔴): per-hour go/caution/no-go summary from all metrics together during night hours.
Rain %: chance of precipitation that hour. Lower is safer for gear.
Rain in/h: expected precipitation intensity. Any sustained non-zero value is generally bad for imaging sessions.
Cloud %: estimated sky cloud cover. Lower means clearer sky and better target acquisition.
Wind mph: stronger wind can shake mounts/tripods and blur long exposures.
Humid %: high humidity raises dew/fog risk, which can soften images and fog optics.
Moon %: moon illumination percentage. Higher moonlight brightens sky background and reduces contrast on faint targets.
Seeing (0-100): model score for atmospheric steadiness. It combines forecast turbulence signals (mainly wind/thermal instability) into a 0-100 index. Higher values usually mean steadier stars and sharper detail at high magnification.
Bar heights/colors: bars get stronger as values move deeper into caution/no-go thresholds for that metric. For seeing, higher bars are better conditions; for most others, lower is better.
Daytime handling: when daytime is collapsed, ☀ markers represent hidden daylight blocks so nighttime hours stay compact.