Noctilucent cloud season is upon us. If you’re in the Northern Hemisphere this summer, keep your head to the skies at sunset ...

Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start ...

Houston's current visitation by Saharan dust, which has been casting a haze over the city for a week now, worked with the setting sun to paint the sky orange ... a map of the clouds making the ...

WRAL viewers submitted photos of beautiful clouds they saw in the sky before Wednesday night's ... These cumulonimbus clouds started forming just before sunset and they turned orange in the ...