On July 6, Earth will be at aphelion, the furthest point from the Sun it can reach on its yearly orbit. At aphelion, Earth will be 94,502,963 million miles (152, 087,778 million km) from the Sun. Earth was at perihelion, its closest point to the Sun, during January, when it was only 91,403 ,640 million miles (147,099,900 million km) away.
The seasons are caused not by how close Earth is to the Sun, but by which hemisphere is tilted towards it. In July the northern hemisphere is tilted towards the Sun, so we have summer, while in January, when Earth is closest to the Sun, the northern hemisphere is tilted away from it and we have winter.
www.theramblingastronomer.co.uk
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