Weather in the Grand Canyon varies according to elevation. The forested rims are high enough to receive winter snowfall, but along the Colorado River in the Inner Gorge, temperatures are similar to those found in Tucson and other low elevation desert locations in Arizona.
Although usually very clear, at times, the air quality can be considerably affected by events such as forest fires and dust storms in the Southwest.
We were fortunate during our visit, we stayed inside the park itself at one of the several hotels and cabins available to visitors. There are also free buses you can ride from one area of the canyon to another. Regardless of the length of your visit to the Grand Canyon, whether you stay right in the park or visit for a day, you will leave with a sense of wonder.