Weather Forecast for La Jolla

California, United States of America

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Sunny

Current Weather - La Jolla: 21°C

California, United States of America

Sunny

Feels like 21°C

Wind

15 km/h WSW

Humidity

55%

Pressure

1012 mb

UV Index

6

Visibility

10 km

Sunny

Sunny

Wednesday, May 20, 2026

High

22°C

Low

17°C

Rain Chance

0%

Hourly Forecast

Clear 18°C
23:00
May 21

Day Statistics

Maximum Wind

17 km/h

Humidity

66%

Precipitation

0 mm

UV Index

9

Visibility

10 km

Rain Chance

0%

Snow Chance

0%

Sun & Moon

Sunrise

05:47 AM

Sunset

07:45 PM

Moonrise

09:33 AM

Moonset

No moonset

Moon Phase

Waxing Crescent

Moon Illumination

15%

Air Quality

PM2.5

18.2

μg/m³

PM10

27.4

μg/m³

NO₂

16.8

μg/m³

O₃

68.8

μg/m³

SO₂

2.5

μg/m³

CO

142.7

μg/m³

US EPA Index: 2 GB DEFRA Index: 2

Solar Radiation Data

Shortwave Radiation

992

Diffuse Radiation

84.77

DNI

0

GTI

93.79

Weather Alerts

Air Quality Alert issued May 19 at 11:05PM PDT by NWS San Diego CA

Santa Ana Mountains and Foothills; Orange County Coastal; Orange County Inland May 19, 11:05 PM - May 20, 04:30 PM
Severity: Unknown Urgency: Unknown

Event: Air Quality Alert Certainty: Unknown Category: Met

Air Quality Alert issued May 19 at 9:42PM PDT by NWS San Diego CA

Santa Ana Mountains and Foothills; Orange County Coastal; Orange County Inland May 19, 09:42 PM - May 20, 09:45 PM
Severity: Unknown Urgency: Unknown

* WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...most of LA County and all of Orange County. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...until Tuesday evening. * IMPACTS...Particles in wildfire smoke can get deep into the lungs and cause serious health problems such as heart attacks, strokes, asthma attacks, and difficulty breathing. Everyone can be affected, but people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.

To protect your health, if you smell or see smoke: * Remain indoors with windows and doors closed * Avoid intense outdoor physical activity * Run your air conditioner and/or an air purifier * If you must be outdoors, keep the time brief and wear a well- fitting N-95 mask * Do not use whole house fans or swamp coolers that bring in outside air if you have other methods to stay cool * Avoid other sources of pollution such as fireplaces, candles, incense, grilling, and gasoline-powered lawn and garden equipment

Event: Air Quality Alert Certainty: Unknown Category: Met

Air Quality Alert issued May 19 at 9:37PM PDT by NWS San Diego CA

Santa Ana Mountains and Foothills; Orange County Coastal; Orange County Inland May 19, 09:37 PM - May 20, 09:45 PM
Severity: Unknown Urgency: Unknown

* WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...most of LA County and all of Orange County. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...until Tuesday evening. * IMPACTS...Particles in wildfire smoke can get deep into the lungs and cause serious health problems such as heart attacks, strokes, asthma attacks, and difficulty breathing. Everyone can be affected, but people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.

To protect your health, if you smell or see smoke: * Remain indoors with windows and doors closed * Avoid intense outdoor physical activity * Run your air conditioner and/or an air purifier * If you must be outdoors, keep the time brief and wear a well- fitting N-95 mask * Do not use whole house fans or swamp coolers that bring in outside air if you have other methods to stay cool * Avoid other sources of pollution such as fireplaces, candles, incense, grilling, and gasoline-powered lawn and garden equipment

Event: Air Quality Alert Certainty: Unknown Category: Met

When to visit La Jolla?

Plan your perfect trip with our month-by-month weather guide

⭐ Best months: June July August

January

☀️
18°C
💧
8 Days of rain
❄️
No snowfall
🥶 Coldest month

February

☀️
18°C
💧
10 Days of rain
❄️
No snowfall
🌧 Wettest month,

March

☀️
18°C
💧
6 Days of rain
❄️
No snowfall

April

☀️
19°C
💧
3 Days of rain
❄️
No snowfall

May

☀️
20°C
💧
1 Days of rain
❄️
No snowfall

June

☀️
22°C
💧
0 Days of rain
❄️
No snowfall
Best time to visit

July

☀️
24°C
💧
0 Days of rain
❄️
No snowfall
Best time to visit

August

☀️
25°C
💧
0 Days of rain
❄️
No snowfall
Best time to visit
🔥 Hottest month
🌵 Driest month

September

☀️
25°C
💧
1 Days of rain
❄️
No snowfall

October

☀️
23°C
💧
2 Days of rain
❄️
No snowfall

November

☀️
21°C
💧
3 Days of rain
❄️
No snowfall

December

☀️
18°C
💧
6 Days of rain
❄️
No snowfall