• Friday

    Jul 29

    74°Lo 57°

    Low clouds, then sun

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Saturday

    Jul 30

    72°Lo 58°

    Mostly sunny and pleasant

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sunday

    Jul 31

    71°Lo 56°

    Partly sunny and pleasant

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
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San Francisco Weather Report

90-degree heat to build across northwestern US this week

July 26, 2016; 7:48 AM ET

Dangerous heat will surge northward and send temperatures rising across the northwestern United States this week. more >

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