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Current weather in Aliso Viejo is clear sky.

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Weather data for Aliso Viejo is updated regularly with the latest available observations and forecasts.

Now · 3:41 AM

Aliso Viejo Weather & Hourly Forecast

United States · California · 92656

77°F

Clear night

Feels like: 81°F

💧 Humidity 64% 🌡 Pressure 29.91 inHg 💨 Wind 3 mph 👁 Visibility 21.1 mi ☁ Clouds 2% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Aliso Viejo

Today

4:00 AM

Clear night

77° 💧 None 💨 2 mph H 62%29.91 inHg

7:00 AM

Sunny

76° 💧 None 💨 4 mph H 69%29.94 inHg

10:00 AM

Sunny

88° 💧 None 💨 5 mph H 47%29.94 inHg

1:00 PM

Sunny

92° 💧 None 💨 7 mph H 39%29.91 inHg

4:00 PM

Sunny

90° 💧 None 💨 6 mph H 39%29.85 inHg

7:00 PM

Sunny

80° 💧 None 💨 5 mph H 61%29.83 inHg

10:00 PM

Clear night

76° 💧 None 💨 5 mph H 72%29.88 inHg

Tomorrow

1:00 AM

Clear night

74° 💧 None 💨 4 mph H 74%29.85 inHg

4:00 AM

Clear night

73° 💧 None 💨 2 mph H 71%29.85 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 64%29.85 inHg

10:00 AM

Sunny

85° 💧 None 💨 6 mph H 45%29.88 inHg

1:00 PM

Sunny

88° 💧 None 💨 7 mph H 45%29.83 inHg

4:00 PM

Sunny

86° 💧 None 💨 6 mph H 48%29.80 inHg

7:00 PM

Sunny

78° 💧 None 💨 4 mph H 66%29.80 inHg

10:00 PM

Clear night

74° 💧 None 💨 3 mph H 80%29.85 inHg

Saturday

1:00 AM

Clear night

71° 💧 None 💨 3 mph H 91%29.85 inHg

Today

4:00 AM

Clear night

77° 💧 None 💨 2 mph H 62%29.91 inHg

5:00 AM

Mostly clear night

77° 💧 None 💨 2 mph H 63%29.91 inHg

6:00 AM

Mostly clear night

76° 💧 None 💨 3 mph H 65%29.91 inHg

7:00 AM

Sunny

76° 💧 None 💨 4 mph H 69%29.94 inHg

8:00 AM

Mostly sunny

79° 💧 None 💨 4 mph H 64%29.94 inHg

9:00 AM

Sunny

83° 💧 None 💨 4 mph H 55%29.94 inHg

10:00 AM

Sunny

88° 💧 None 💨 5 mph H 47%29.94 inHg

11:00 AM

Sunny

90° 💧 None 💨 6 mph H 43%29.94 inHg

12:00 PM

Sunny

91° 💧 None 💨 7 mph H 41%29.94 inHg

1:00 PM

Sunny

92° 💧 None 💨 7 mph H 39%29.91 inHg

2:00 PM

Sunny

92° 💧 None 💨 7 mph H 38%29.88 inHg

3:00 PM

Sunny

91° 💧 None 💨 7 mph H 38%29.85 inHg

4:00 PM

Sunny

90° 💧 None 💨 6 mph H 39%29.85 inHg

5:00 PM

Sunny

88° 💧 None 💨 5 mph H 43%29.83 inHg

6:00 PM

Sunny

85° 💧 None 💨 5 mph H 49%29.83 inHg

7:00 PM

Sunny

80° 💧 None 💨 5 mph H 61%29.83 inHg

8:00 PM

Clear night

77° 💧 None 💨 4 mph H 69%29.85 inHg

9:00 PM

Clear night

76° 💧 None 💨 4 mph H 71%29.88 inHg

10:00 PM

Clear night

76° 💧 None 💨 5 mph H 72%29.88 inHg

11:00 PM

Clear night

75° 💧 None 💨 4 mph H 75%29.88 inHg

Tomorrow

12:00 AM

Clear night

74° 💧 None 💨 3 mph H 76%29.88 inHg

1:00 AM

Clear night

74° 💧 None 💨 4 mph H 74%29.85 inHg

2:00 AM

Clear night

74° 💧 None 💨 4 mph H 68%29.85 inHg

3:00 AM

Clear night

74° 💧 None 💨 3 mph H 69%29.85 inHg

4:00 AM

Clear night

73° 💧 None 💨 2 mph H 71%29.85 inHg

5:00 AM

Clear night

73° 💧 None 💨 3 mph H 70%29.85 inHg

6:00 AM

Clear night

73° 💧 None 💨 4 mph H 68%29.85 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 64%29.85 inHg

8:00 AM

Sunny

78° 💧 None 💨 4 mph H 55%29.88 inHg

9:00 AM

Sunny

82° 💧 None 💨 5 mph H 49%29.88 inHg

10:00 AM

Sunny

85° 💧 None 💨 6 mph H 45%29.88 inHg

11:00 AM

Sunny

86° 💧 None 💨 7 mph H 46%29.88 inHg

12:00 PM

Sunny

87° 💧 None 💨 7 mph H 48%29.85 inHg

1:00 PM

Sunny

88° 💧 None 💨 7 mph H 45%29.83 inHg

2:00 PM

Sunny

89° 💧 None 💨 7 mph H 43%29.83 inHg

3:00 PM

Sunny

87° 💧 None 💨 7 mph H 44%29.80 inHg

4:00 PM

Sunny

86° 💧 None 💨 6 mph H 48%29.80 inHg

5:00 PM

Sunny

84° 💧 None 💨 5 mph H 53%29.77 inHg

6:00 PM

Sunny

81° 💧 None 💨 4 mph H 58%29.80 inHg

7:00 PM

Sunny

78° 💧 None 💨 4 mph H 66%29.80 inHg

8:00 PM

Clear night

76° 💧 None 💨 3 mph H 74%29.83 inHg

9:00 PM

Clear night

75° 💧 None 💨 3 mph H 77%29.83 inHg

10:00 PM

Clear night

74° 💧 None 💨 3 mph H 80%29.85 inHg

11:00 PM

Clear night

72° 💧 None 💨 3 mph H 85%29.85 inHg

Saturday

12:00 AM

Clear night

72° 💧 None 💨 3 mph H 89%29.85 inHg

1:00 AM

Clear night

71° 💧 None 💨 3 mph H 91%29.85 inHg

2:00 AM

Clear night

71° 💧 None 💨 4 mph H 89%29.88 inHg

3:00 AM

Clear night

71° 💧 None 💨 5 mph H 84%29.85 inHg

4:00 AM

Clear night

71° 💧 None 💨 5 mph H 83%29.85 inHg

5:00 AM

Clear night

71° 💧 None 💨 5 mph H 85%29.85 inHg

6:00 AM

Mostly clear night

70° 💧 None 💨 5 mph H 87%29.88 inHg

7:00 AM

Partly cloudy

71° 💧 0.000 in 💨 5 mph H 87%29.88 inHg

8:00 AM

Partly cloudy

73° 💧 0.000 in 💨 5 mph H 81%29.91 inHg

9:00 AM

Mostly sunny

76° 💧 None 💨 5 mph H 74%29.91 inHg

10:00 AM

Sunny

79° 💧 None 💨 6 mph H 66%29.91 inHg

11:00 AM

Sunny

81° 💧 None 💨 6 mph H 63%29.91 inHg

12:00 PM

Sunny

82° 💧 None 💨 7 mph H 62%29.91 inHg

1:00 PM

Sunny

82° 💧 None 💨 7 mph H 59%29.88 inHg

2:00 PM

Sunny

82° 💧 None 💨 7 mph H 56%29.88 inHg

3:00 PM

Sunny

81° 💧 None 💨 7 mph H 56%29.85 inHg

4:00 PM

Sunny

80° 💧 None 💨 6 mph H 56%29.85 inHg

5:00 PM

Sunny

79° 💧 None 💨 5 mph H 58%29.85 inHg

8:00 PM

Clear night

73° 💧 None 💨 6 mph H 81%29.85 inHg

11:00 PM

Clear night

71° 💧 None 💨 5 mph H 86%29.91 inHg

Sunday

2:00 AM

Mostly cloudy night

68° 💧 None 💨 2 mph H 91%29.88 inHg

5:00 AM

Mostly cloudy night

67° 💧 None 💨 2 mph H 89%29.88 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 1 mph H 81%29.88 inHg

11:00 AM

Mostly sunny

76° 💧 None 💨 6 mph H 69%29.88 inHg

2:00 PM

Sunny

76° 💧 None 💨 8 mph H 62%29.85 inHg

5:00 PM

Sunny

76° 💧 None 💨 6 mph H 64%29.80 inHg

8:00 PM

Clear night

71° 💧 None 💨 5 mph H 83%29.80 inHg

11:00 PM

Clear night

69° 💧 None 💨 1 mph H 91%29.83 inHg

Monday

2:00 AM

Mostly clear night

68° 💧 None 💨 5 mph H 89%29.80 inHg

5:00 AM

Mostly clear night

67° 💧 None 💨 5 mph H 92%29.80 inHg

8:00 AM

Sunny

70° 💧 None 💨 8 mph H 82%29.83 inHg

11:00 AM

Sunny

75° 💧 None 💨 9 mph H 67%29.85 inHg

2:00 PM

Sunny

78° 💧 None 💨 9 mph H 62%29.80 inHg

5:00 PM

Sunny

74° 💧 None 💨 6 mph H 70%29.77 inHg

8:00 PM

Mostly clear night

71° 💧 None 💨 6 mph H 80%29.80 inHg

11:00 PM

Partly cloudy night

69° 💧 None 💨 7 mph H 83%29.83 inHg

Tuesday

2:00 AM

Partly cloudy night

69° 💧 None 💨 9 mph H 83%29.85 inHg

5:00 AM

Mostly cloudy night

68° 💧 None 💨 9 mph H 82%29.85 inHg

8:00 AM

Partly cloudy

70° 💧 None 💨 8 mph H 74%29.88 inHg

11:00 AM

Mostly sunny

76° 💧 None 💨 9 mph H 63%29.91 inHg

2:00 PM

Sunny

76° 💧 None 💨 9 mph H 62%29.88 inHg

5:00 PM

Sunny

73° 💧 None 💨 7 mph H 67%29.88 inHg

11:00 PM

Partly cloudy night

68° 💧 None 💨 5 mph H 84%29.94 inHg

Wednesday

5:00 AM

Clear night

63° 💧 None 💨 4 mph H 93%29.94 inHg

11:00 AM

Sunny

75° 💧 None 💨 4 mph H 66%30.00 inHg

5:00 PM

Sunny

75° 💧 None 💨 6 mph H 62%29.94 inHg

11:00 PM

Clear night

69° 💧 None 💨 1 mph H 87%30.00 inHg

Thursday

5:00 AM

Clear night

65° 💧 None 💨 0 mph H 91%30.00 inHg

11:00 AM

Sunny

77° 💧 None 💨 6 mph H 65%30.03 inHg

5:00 PM

Sunny

76° 💧 None 💨 11 mph H 66%29.94 inHg

11:00 PM

Clear night

69° 💧 None 💨 2 mph H 90%30.00 inHg

Friday

5:00 AM

Overcast night

67° 💧 None 💨 0 mph H 94%29.97 inHg

11:00 AM

Mostly sunny

77° 💧 None 💨 6 mph H 71%30.00 inHg

5:00 PM

Sunny

76° 💧 None 💨 11 mph H 73%29.88 inHg

11:00 PM

Clear night

71° 💧 None 💨 3 mph H 89%29.94 inHg

Saturday

5:00 AM

Mostly cloudy night

67° 💧 None 💨 2 mph H 94%29.91 inHg

11:00 AM

Mostly sunny

76° 💧 None 💨 5 mph H 67%29.91 inHg

5:00 PM

Mostly sunny

75° 💧 None 💨 9 mph H 73%29.83 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 2 mph H 88%29.85 inHg

Sunday

5:00 AM

Mostly cloudy night

70° 💧 None 💨 4 mph H 88%29.83 inHg

11:00 AM

Mostly cloudy

74° 💧 None 💨 7 mph H 69%29.88 inHg

5:00 PM

Sunny

73° 💧 None 💨 7 mph H 67%29.80 inHg

11:00 PM

Mostly cloudy night

69° 💧 None 💨 5 mph H 75%29.88 inHg

Monday

5:00 AM

Light rain

67° 💧 None 💨 4 mph H 81%29.85 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 7 mph H 62%29.88 inHg

5:00 PM

Partly cloudy

72° 💧 None 💨 8 mph H 60%29.83 inHg

11:00 PM

Partly cloudy night

68° 💧 None 💨 1 mph H 73%29.88 inHg

Tuesday

5:00 AM

Light rain

65° 💧 None 💨 1 mph H 84%29.91 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 3 mph H 55%30.00 inHg

5:00 PM

Sunny

71° 💧 None 💨 9 mph H 59%29.94 inHg

11:00 PM

Clear night

66° 💧 None 💨 3 mph H 72%30.03 inHg

Wednesday

5:00 AM

Mostly clear night

62° 💧 None 💨 5 mph H 74%30.03 inHg

11:00 AM

Sunny

73° 💧 None 💨 6 mph H 52%30.09 inHg

5:00 PM

Sunny

72° 💧 None 💨 14 mph H 63%29.97 inHg

11:00 PM

Clear night

68° 💧 None 💨 6 mph H 75%30.00 inHg

Thursday

5:00 AM

Mostly clear night

61° 💧 None 💨 3 mph H 79%29.94 inHg

11:00 AM

Sunny

74° 💧 None 💨 4 mph H 69%29.94 inHg

5:00 PM

Sunny

75° 💧 None 💨 8 mph H 61%29.83 inHg

In Aliso Viejo and, more broadly, across the state of California: This evening, the sky will be mostly sunny with just a few clouds passing through. Temperatures will remain quite hot, ranging from 88 to 97 degrees Fahrenheit. Light northwest winds will blow at up to 9 mph, with occasional gusts reaching 12 mph, providing only slight relief from the heat. No precipitation is expected during the next few hours, so outdoor activities can generally proceed without concern for rain. It will be a warm evening, and it’s advisable to stay hydrated if you plan to be outdoors. Temperatures will gradually stay in the high 80s to low 90s through the night, with the winds remaining gentle. Overall, it should be a warm, dry evening with clear skies.

15-Day Weather Outlook for Aliso Viejo

TomorrowTomorrow

Sunny 89°/73° 💧 None 💨 7 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 84°/70° 💧 None 💨 7 mph

Sunday, Sep 13Sun Sep 13

Mostly cloudy 79°/67° 💧 0.002 in 💨 8 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 78°/67° 💧 None 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 76°/68° 💧 0.002 in 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Partly cloudy 75°/63° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Sunny 77°/65° 💧 None 💨 6 mph

Friday, Sep 18Fri Sep 18

Overcast 77°/67° 💧 None 💨 11 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 76°/67° 💧 0.001 in 💨 11 mph

Sunday, Sep 20Sun Sep 20

Mostly cloudy 75°/70° 💧 0.004 in 💨 9 mph

Monday, Sep 21Mon Sep 21

Light rain 73°/67° 💧 0.038 in 💨 7 mph

Tuesday, Sep 22Tue Sep 22

Light rain 72°/65° 💧 0.046 in 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 73°/62° 💧 None 💨 9 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 74°/61° 💧 None 💨 14 mph

Friday, Sep 25Fri Sep 25

Sunny 75°/75° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Aliso Viejo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Aliso Viejo

Hourly forecast · Updated every 2 hours

Poor

Nearest forecast value 4:00 AM

PM2.5 Fine particles Fair 22,3µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Fair 44,8µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Poor 144,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Strenuous outdoor physical activity should be limited, especially for sensitive people.

UV & HEALTH

UV, Sun & Health Outlook in Aliso Viejo

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 9,1Very high 😷Poor

Tomorrow UV 9,2Very high 😐Moderate

Saturday UV 9,1Very high 😐Moderate

Sunday UV 9,1Very high 🙂Fair

Monday UV 6,0High 🙂Fair

Tuesday UV 6,0High —Unavailable

Wednesday UV 6,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,7 9:00 AMUV 1,9 10:00 AMUV 4,2 11:00 AMUV 6,5 12:00 PMUV 8,4 1:00 PMUV 9,1 2:00 PMUV 8,2 3:00 PMUV 6,1 4:00 PMUV 3,6 5:00 PMUV 1,5 6:00 PMUV 0,4

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Take it easier outdoors

If you are sensitive to air pollution, keep intense outdoor exercise shorter or choose a less demanding activity.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Consider reducing outdoor activity

Current air conditions favor shorter, lighter outdoor activity rather than prolonged strenuous exercise.

WIND OUTLOOK

Hourly Wind Forecast for Aliso Viejo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ALISO VIEJO, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

94/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:30 PM–5:06 AM

☁ Cloud cover 9% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 79° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min79%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Aliso Viejo were last refreshed today at 3:22 AM. The current forecast period extends through 12/09/2026 at 1:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.