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Official · NWS

Extreme Heat Warning

until 3:00 am

Extreme Heat Warning issued October 2 at 9:13PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA

Full text

* WHAT...Dangerously hot conditions with high temperatures ranging from the mid 80s to lower 90s near the coast to the mid 90s to low 100s for the mesas and other higher coastal terrain expected. Nights will be very warm with low temperatures mostly in the 70s. * WHERE...San Diego County Coastal Areas. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

San Diego County Coastal Areas

Computed

Heat advisory

Sat

Feels-like high near 35°C.

Computed

Heat advisory

Sun

Feels-like high near 34°C.

Computed

Heat advisory

Mon

Feels-like high near 32°C.

San Diego Weather

California 3:16 am local updated now

Clear sky

73°

Clear sky

Feels like 73°

96° 73° today's high / low
97

Perfect

Outdoor comfort right now

It is 73°F and clear sky in San Diego. Nothing wet on the radar for the next 24 hours. Temperatures climb about 6°F over the next six hours. Tomorrow: clear sky, high 94°F.

  • Wind 0 mph N
  • Humidity 73%
  • Cloud 0%
  • UV peak 8
  • Rain chance 1%

Next 48 hours

Scroll sideways — or pick a day below.

Now

Clear sky

3

3am

Clear sky

5

4am

Clear sky

5

5am

Clear sky

6

6am

Clear sky

6

7am

Clear sky

7

8am

Clear sky

7

9am

Clear sky

7

10am

Clear sky

6

11am

Clear sky

5

12pm

Clear sky

5

1pm

Clear sky

7

2pm

Clear sky

9

3pm

Clear sky

11

4pm

Clear sky

1%

10

5pm

Clear sky

9

6pm

Clear sky

7

7pm

Clear sky

6

8pm

Clear sky

6

9pm

Clear sky

6

10pm

Clear sky

6

11pm

Clear sky

5

12am

Sun

Clear sky

5

1am

Clear sky

5

2am

Clear sky

5

3am

Clear sky

5

4am

Clear sky

5

5am

Clear sky

5

6am

Clear sky

5

7am

Clear sky

5

8am

Clear sky

4

9am

Clear sky

4

10am

Clear sky

4

11am

Clear sky

5

12pm

Clear sky

6

1pm

Clear sky

7

2pm

Clear sky

8

3pm

Clear sky

8

4pm

Clear sky

9

5pm

Clear sky

8

6pm

Clear sky

7

7pm

Clear sky

6

8pm

Clear sky

5

9pm

Clear sky

6

10pm

Clear sky

6

11pm

Clear sky

7

12am

Mon

Clear sky

7

1am

Clear sky

6

Conditions in detail

  • Feels like

    73°

    About what it looks like

  • Dew point

    65°

    Noticeably humid

  • Wind

    0 mph

    Gusting 5 mph from N

  • Pressure

    29.80 inHg

    —

  • Visibility

    9.9 mi

    Clear

  • UV index

    0

    Peaks at 8 today

  • Cloud cover

    0%

    —

  • Precipitation today

    0.00"

    None expected

Air quality

US AQI

74

Moderate

  • PM2.5 20 µg/m³
  • PM10 22 µg/m³
  • Ozone 21 µg/m³
  • NO₂ 43 µg/m³

San Diego weather questions, answered

Will it rain in San Diego today?
No — the next 24 hours in San Diego look dry, with the chance of precipitation peaking at 1%.
How warm does it get in San Diego today?
San Diego reaches a high of 96°F and drops to 73°F overnight. Right now it is 73°F and feels like 73°F.
What is the best time to be outside in San Diego today?
7am looks like the pick — 76°F, clear sky, wind 7 mph. Outdoor comfort scores 98 out of 100 (perfect).
What is the weather in San Diego tomorrow?
Clear sky, with a high of 94°F and a low of 76°F — +2.9° cooler than today. Chance of precipitation peaks at 0%.
What time is sunrise and sunset in San Diego?
The sun rises at 6:44 am and sets at 6:30 pm, giving 11h 46m of daylight.

About this San Diego forecast

Updated 2026-10-03 10:16 UTC, and refreshed automatically every few minutes. Forecast data is provided by Visual Crossing; radar frames from RainViewer; the 20-year normals and records from the ERA5 reanalysis archive. No national weather service publishes point alerts here, so only computed watches are shown.

Watches labelled computed are worked out on this site from forecast thresholds and are not official warnings — always defer to your national weather service. Need help reading a number? See the sourced weather guide.

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