The skies will be mostly cloudy. The low will be 13°. Good air quality (0-50) Primary pollutant O₃ 64 μg/m³ Pressure is the weight of the air in the atmosphere. It is normalized to the ...

The northern lights surprise stargazers by appearing in many forms—from patches or scattered clouds, to streamers, arcs, rippling or dancing curtains. The lights move and change shape and color.

Another geomagnetic storm means another chance for some lucky Americans to witness the northern lights this week after the second largest solar flare of the current cycle was observed Tuesday.