Back to cities

USA city page

San Francisco, CA Heat-Risk Baseline

A published planning scenario for San Francisco, CA, including risk drivers and safety guidance. It is not a live observation or forecast.

USA - United States

San Francisco, CA

Warm
Baseline temp
23°C
Baseline feels like
24°C
UV index
7
Humidity
60%
Baseline high
26°C
Wind
17 kph
Baseline night low
16°C
Worst hours
13:00-16:00
El Nino Barometer

38 / 100

Warm
SAFEEL NINO

In this published San Francisco scenario, the highest-risk window is 13:00-16:00. Normal summer caution is enough for most people.

Safety recommendations

  • - Normal summer caution is enough for most people.
  • - Stay hydrated during outdoor activity.
  • - Use shade and sunscreen when UV is high.

Microclimates shift quickly between coast, hills, and inland neighborhoods.

Local heat notes

Microclimates shift quickly between coast, hills, and inland neighborhoods.

Use the heat safety tests if you feel weak, dizzy, dehydrated, or unsure whether an outdoor plan is sensible.

Open heat safety tests

elnino.wiki does not provide medical diagnosis or emergency services. If you have severe symptoms such as chest pain, confusion, fainting, severe shortness of breath, or symptoms that do not improve after cooling down, seek urgent medical help immediately.