See our page about what clouds are made from High Level Clouds Cirrus Thin, wispy, and feathery clouds made of ice crystals, often indicating fair weather.   Cirrocumulus Small, white, patchy clouds that form in sheets or ripples.   Cirrostratus Thin, transparent, sheet-like clouds that can create a halo effect around the sun or moon. Mid-level clouds Altocumulus Puffy or patchy clouds that often appear in rows or waves across the sky.   Altostratus A bluish-gray layer covering the entire sky, often making the sun appear fuzzy. Low-level clouds Stratus Featureless, gray clouds that can bring overcast conditions or light drizzle.   Cumulus Puffy white clouds like cotton balls, indicating fair weather. Can grow into storm clouds.   Stratocumulus Low, lumpy, and gray clouds that can form in rows or patches. Vertical or multi-level clouds Cumulonimbus Large, towering thunderstorm clouds that can produce heavy rain, hail, and lightning. They have a dark base and can stretch from low to high altitudes.   Nimbostratus Dark, gray, and featureless clouds that bring steady rain or snow. Resources HTML, graphics & design by Bill Willis 2025