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Current weather in Tustin is clear sky.

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

Now · 11:14 AM

Tustin Weather & Hourly Forecast

United States · California · 92780

78°F

Sunny

Feels like: 80°F

💧 Humidity 56% 🌡 Pressure 29.88 inHg 💨 Wind 3 mph 👁 Visibility 16.4 mi ☁ Clouds 0% ☀️ UV index 3.4 · Moderate 🌅 Sunrise 6:39 AM 🌇 Sunset 6:47 PM

Hourly Forecast for Tustin

Today

12:00 PM

Sunny

82° 💧 None 💨 4 mph H 52%29.85 inHg

3:00 PM

Sunny

86° 💧 None 💨 6 mph H 43%29.80 inHg

6:00 PM

Sunny

78° 💧 None 💨 6 mph H 56%29.83 inHg

9:00 PM

Clear night

71° 💧 None 💨 4 mph H 85%29.88 inHg

Tomorrow

12:00 AM

Clear night

68° 💧 None 💨 2 mph H 93%29.88 inHg

3:00 AM

Clear night

67° 💧 None 💨 0 mph H 94%29.85 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 1 mph H 95%29.88 inHg

9:00 AM

Sunny

71° 💧 None 💨 1 mph H 79%29.91 inHg

12:00 PM

Sunny

84° 💧 None 💨 4 mph H 51%29.88 inHg

3:00 PM

Sunny

86° 💧 None 💨 6 mph H 41%29.83 inHg

6:00 PM

Sunny

77° 💧 None 💨 6 mph H 63%29.85 inHg

9:00 PM

Clear night

73° 💧 None 💨 1 mph H 82%29.91 inHg

Friday

12:00 AM

Clear night

70° 💧 None 💨 0 mph H 91%29.91 inHg

3:00 AM

Mostly cloudy night

68° 💧 None 💨 1 mph H 95%29.88 inHg

6:00 AM

Mostly clear night

66° 💧 None 💨 0 mph H 95%29.88 inHg

9:00 AM

Sunny

73° 💧 None 💨 1 mph H 74%29.91 inHg

Today

12:00 PM

Sunny

82° 💧 None 💨 4 mph H 52%29.85 inHg

1:00 PM

Sunny

84° 💧 None 💨 4 mph H 49%29.85 inHg

2:00 PM

Sunny

86° 💧 None 💨 5 mph H 46%29.83 inHg

3:00 PM

Sunny

86° 💧 None 💨 6 mph H 43%29.80 inHg

4:00 PM

Sunny

84° 💧 None 💨 6 mph H 44%29.80 inHg

5:00 PM

Sunny

82° 💧 None 💨 5 mph H 46%29.80 inHg

6:00 PM

Sunny

78° 💧 None 💨 6 mph H 56%29.83 inHg

7:00 PM

Clear night

73° 💧 None 💨 6 mph H 72%29.83 inHg

8:00 PM

Clear night

72° 💧 None 💨 5 mph H 83%29.85 inHg

9:00 PM

Clear night

71° 💧 None 💨 4 mph H 85%29.88 inHg

10:00 PM

Clear night

70° 💧 None 💨 2 mph H 87%29.88 inHg

11:00 PM

Clear night

69° 💧 None 💨 0 mph H 91%29.88 inHg

Tomorrow

12:00 AM

Clear night

68° 💧 None 💨 2 mph H 93%29.88 inHg

1:00 AM

Clear night

67° 💧 None 💨 1 mph H 94%29.88 inHg

2:00 AM

Clear night

67° 💧 None 💨 1 mph H 94%29.88 inHg

3:00 AM

Clear night

67° 💧 None 💨 0 mph H 94%29.85 inHg

4:00 AM

Mostly cloudy night

66° 💧 None 💨 1 mph H 95%29.85 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 1 mph H 95%29.88 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 1 mph H 95%29.88 inHg

7:00 AM

Mostly cloudy

64° 💧 None 💨 1 mph H 95%29.88 inHg

8:00 AM

Mist

66° 💧 None 💨 0 mph H 92%29.91 inHg

9:00 AM

Sunny

71° 💧 None 💨 1 mph H 79%29.91 inHg

10:00 AM

Sunny

76° 💧 None 💨 2 mph H 68%29.91 inHg

11:00 AM

Sunny

80° 💧 None 💨 3 mph H 58%29.91 inHg

12:00 PM

Sunny

84° 💧 None 💨 4 mph H 51%29.88 inHg

1:00 PM

Sunny

86° 💧 None 💨 5 mph H 48%29.85 inHg

2:00 PM

Sunny

87° 💧 None 💨 6 mph H 43%29.85 inHg

3:00 PM

Sunny

86° 💧 None 💨 6 mph H 41%29.83 inHg

4:00 PM

Sunny

84° 💧 None 💨 6 mph H 43%29.83 inHg

5:00 PM

Sunny

81° 💧 None 💨 6 mph H 51%29.85 inHg

6:00 PM

Sunny

77° 💧 None 💨 6 mph H 63%29.85 inHg

7:00 PM

Clear night

74° 💧 None 💨 3 mph H 74%29.88 inHg

8:00 PM

Clear night

73° 💧 None 💨 2 mph H 79%29.88 inHg

9:00 PM

Clear night

73° 💧 None 💨 1 mph H 82%29.91 inHg

10:00 PM

Clear night

72° 💧 None 💨 1 mph H 86%29.91 inHg

11:00 PM

Clear night

71° 💧 None 💨 1 mph H 89%29.91 inHg

Friday

12:00 AM

Clear night

70° 💧 None 💨 0 mph H 91%29.91 inHg

1:00 AM

Mostly clear night

69° 💧 None 💨 1 mph H 94%29.91 inHg

2:00 AM

Mostly cloudy night

68° 💧 None 💨 1 mph H 96%29.88 inHg

3:00 AM

Mostly cloudy night

68° 💧 None 💨 1 mph H 95%29.88 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 1 mph H 94%29.88 inHg

5:00 AM

Partly cloudy night

67° 💧 None 💨 1 mph H 92%29.88 inHg

6:00 AM

Mostly clear night

66° 💧 None 💨 0 mph H 95%29.88 inHg

7:00 AM

Partly cloudy

65° 💧 None 💨 0 mph H 95%29.91 inHg

8:00 AM

Sunny

68° 💧 None 💨 0 mph H 88%29.91 inHg

9:00 AM

Sunny

73° 💧 None 💨 1 mph H 74%29.91 inHg

10:00 AM

Sunny

78° 💧 None 💨 2 mph H 58%29.91 inHg

11:00 AM

Sunny

84° 💧 None 💨 3 mph H 47%29.91 inHg

12:00 PM

Sunny

88° 💧 None 💨 4 mph H 39%29.91 inHg

1:00 PM

Sunny

90° 💧 None 💨 5 mph H 33%29.88 inHg

2:00 PM

Mostly sunny

90° 💧 None 💨 6 mph H 30%29.85 inHg

3:00 PM

Sunny

89° 💧 None 💨 6 mph H 30%29.85 inHg

4:00 PM

Sunny

89° 💧 None 💨 5 mph H 29%29.83 inHg

5:00 PM

Sunny

88° 💧 None 💨 4 mph H 29%29.83 inHg

Saturday

2:00 AM

Mostly cloudy night

72° 💧 None 💨 0 mph H 39%29.85 inHg

5:00 AM

Mostly clear night

69° 💧 None 💨 0 mph H 48%29.85 inHg

8:00 AM

Sunny

75° 💧 None 💨 1 mph H 38%29.88 inHg

11:00 AM

Overcast

89° 💧 None 💨 4 mph H 27%29.88 inHg

2:00 PM

Sunny

95° 💧 None 💨 6 mph H 19%29.83 inHg

5:00 PM

Sunny

90° 💧 None 💨 6 mph H 22%29.80 inHg

8:00 PM

Partly cloudy night

79° 💧 None 💨 4 mph H 37%29.85 inHg

11:00 PM

Overcast night

75° 💧 None 💨 3 mph H 43%29.88 inHg

Sunday

2:00 AM

Overcast night

73° 💧 None 💨 1 mph H 47%29.85 inHg

5:00 AM

Overcast night

72° 💧 None 💨 1 mph H 51%29.88 inHg

8:00 AM

Overcast

73° 💧 None 💨 3 mph H 55%29.91 inHg

11:00 AM

Mostly cloudy

79° 💧 None 💨 5 mph H 53%29.94 inHg

2:00 PM

Mostly sunny

88° 💧 None 💨 9 mph H 26%29.88 inHg

5:00 PM

Sunny

83° 💧 None 💨 7 mph H 34%29.85 inHg

8:00 PM

Clear night

72° 💧 None 💨 4 mph H 71%29.88 inHg

11:00 PM

Clear night

68° 💧 None 💨 1 mph H 83%29.88 inHg

Monday

2:00 AM

Clear night

65° 💧 None 💨 0 mph H 88%29.85 inHg

5:00 AM

Clear night

63° 💧 None 💨 1 mph H 86%29.85 inHg

8:00 AM

Sunny

66° 💧 None 💨 2 mph H 75%29.88 inHg

11:00 AM

Sunny

77° 💧 None 💨 5 mph H 52%29.88 inHg

2:00 PM

Sunny

82° 💧 None 💨 8 mph H 38%29.83 inHg

5:00 PM

Sunny

77° 💧 None 💨 6 mph H 38%29.77 inHg

8:00 PM

Clear night

70° 💧 None 💨 2 mph H 67%29.80 inHg

11:00 PM

Clear night

68° 💧 None 💨 1 mph H 66%29.83 inHg

Tuesday

5:00 AM

Clear night

71° 💧 None 💨 1 mph H 55%29.80 inHg

11:00 AM

Sunny

68° 💧 None 💨 4 mph H 45%29.77 inHg

5:00 PM

Sunny

96° 💧 None 💨 2 mph H 7%29.80 inHg

11:00 PM

Clear night

97° 💧 None 💨 5 mph H 9%29.71 inHg

Wednesday

5:00 AM

Clear night

79° 💧 None 💨 2 mph H 25%29.80 inHg

11:00 AM

Sunny

74° 💧 None 💨 0 mph H 21%29.80 inHg

5:00 PM

Sunny

91° 💧 None 💨 3 mph H 22%29.85 inHg

11:00 PM

Clear night

92° 💧 None 💨 6 mph H 20%29.80 inHg

Thursday

5:00 AM

Clear night

78° 💧 None 💨 1 mph H 42%29.85 inHg

11:00 AM

Mostly cloudy

74° 💧 None 💨 1 mph H 33%29.80 inHg

5:00 PM

Mostly sunny

90° 💧 None 💨 3 mph H 23%29.85 inHg

11:00 PM

Clear night

91° 💧 None 💨 5 mph H 13%29.77 inHg

Friday

5:00 AM

Clear night

78° 💧 None 💨 1 mph H 33%29.83 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 1 mph H 41%29.80 inHg

5:00 PM

Sunny

85° 💧 None 💨 4 mph H 41%29.83 inHg

11:00 PM

Clear night

86° 💧 None 💨 6 mph H 31%29.77 inHg

Saturday

5:00 AM

Clear night

73° 💧 None 💨 2 mph H 59%29.80 inHg

11:00 AM

Sunny

69° 💧 None 💨 1 mph H 64%29.80 inHg

5:00 PM

Sunny

87° 💧 None 💨 4 mph H 36%29.83 inHg

11:00 PM

Clear night

87° 💧 None 💨 5 mph H 34%29.77 inHg

Sunday

5:00 AM

Clear night

74° 💧 None 💨 0 mph H 63%29.85 inHg

11:00 AM

Sunny

73° 💧 None 💨 0 mph H 51%29.83 inHg

5:00 PM

Sunny

89° 💧 None 💨 3 mph H 32%29.88 inHg

11:00 PM

Clear night

91° 💧 None 💨 3 mph H 30%29.83 inHg

Monday

5:00 AM

Clear night

77° 💧 None 💨 2 mph H 55%29.88 inHg

11:00 AM

Sunny

74° 💧 None 💨 0 mph H 47%29.85 inHg

5:00 PM

Sunny

93° 💧 None 💨 4 mph H 25%29.88 inHg

11:00 PM

Clear night

96° 💧 None 💨 5 mph H 23%29.80 inHg

Tuesday

5:00 AM

Clear night

84° 💧 None 💨 1 mph H 24%29.83 inHg

11:00 AM

Sunny

79° 💧 None 💨 1 mph H 25%29.80 inHg

5:00 PM

Sunny

101° 💧 None 💨 3 mph H 13%29.83 inHg

11:00 PM

Clear night

102° 💧 None 💨 6 mph H 13%29.77 inHg

Wednesday

5:00 AM

Clear night

88° 💧 None 💨 1 mph H 18%29.80 inHg

11:00 AM

Sunny

81° 💧 None 💨 2 mph H 18%29.80 inHg

5:00 PM

Sunny

100° 💧 None 💨 3 mph H 12%29.83 inHg

11:00 PM

Clear night

102° 💧 None 💨 7 mph H 14%29.74 inHg

In Tustin and, more broadly, across the state of California: Tonight, expect mostly cloudy skies with mild to warm temperatures ranging from 73 to 80 degrees Fahrenheit. Winds will be light, coming from the west at around 9 mph, with occasional gusts reaching up to 16 mph. No precipitation is forecast for the evening and the early night hours, so outdoor plans should be comfortable. Temperatures may gradually cool into the lower 70s later in the night, but overall, conditions will remain mild. The wind remains gentle, providing a slight breeze without causing concern. Overall, it should be a pleasant evening with no weather-related disruptions.

15-Day Weather Outlook for Tustin

TomorrowTomorrow

Mostly cloudy 87°/64° 💧 None 💨 6 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 90°/65° 💧 None 💨 6 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 95°/69° 💧 None 💨 6 mph

Sunday, Sep 27Sun Sep 27

Overcast 88°/68° 💧 None 💨 9 mph

Monday, Sep 28Mon Sep 28

Sunny 82°/63° 💧 None 💨 8 mph

Tuesday, Sep 29Tue Sep 29

Sunny 97°/68° 💧 None 💨 5 mph

Wednesday, Sep 30Wed Sep 30

Sunny 92°/74° 💧 None 💨 6 mph

Thursday, Oct 1Thu Oct 1

Mostly cloudy 91°/74° 💧 None 💨 5 mph

Friday, Oct 2Fri Oct 2

Mostly sunny 86°/72° 💧 None 💨 6 mph

Saturday, Oct 3Sat Oct 3

Sunny 87°/69° 💧 None 💨 5 mph

Sunday, Oct 4Sun Oct 4

Sunny 91°/73° 💧 None 💨 3 mph

Monday, Oct 5Mon Oct 5

Sunny 96°/74° 💧 None 💨 5 mph

Tuesday, Oct 6Tue Oct 6

Sunny 102°/79° 💧 None 💨 6 mph

Wednesday, Oct 7Wed Oct 7

Sunny 102°/81° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Tustin

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Tustin

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 12:00 PM

PM2.5 Fine particles Good 5,7µg/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 Good 19,9µg/m³

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

O₃ Ozone Fair 81,3µg/m³

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

NO₂ Nitrogen dioxide Good 0,3µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Tustin

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 7,5High 🙂Fair

Tomorrow UV 7,3High 🙂Fair

Friday UV 7,6High 😐Moderate

Saturday UV 7,4High 🙂Fair

Sunday UV 7,0High 🙂Fair

Monday UV 8,0Very high —Unavailable

Tuesday UV 8,0Very high —Unavailable

Hourly UV index today

12:00 PMUV 7,0 1:00 PMUV 7,5 2:00 PMUV 6,6 3:00 PMUV 4,8 4:00 PMUV 2,8 5:00 PMUV 1,1 6:00 PMUV 0,2 7:00 PMUV 0,0

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Tustin

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · TUSTIN, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

91/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:09 PM–5:17 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 95% Waxing Gibbous · Moon about 17° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 66° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min44%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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 Tustin were last refreshed today at 10:56 AM. The current forecast period extends through 25/09/2026 at 9:00 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.