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

Now · 3:20 PM

Placentia Weather & Hourly Forecast

United States · California · 92870

83°F

Sunny

Feels like: 81°F

💧 Humidity 46% 🌡 Pressure 29.83 inHg 💨 Wind 8 mph 👁 Visibility 25.4 mi ☁ Clouds 1% ☀️ UV index 4.8 · Moderate 🌅 Sunrise 6:38 AM 🌇 Sunset 6:49 PM

Hourly Forecast for Placentia

Today

4:00 PM

Sunny

81° 💧 None 💨 8 mph H 50%29.83 inHg

7:00 PM

Clear night

73° 💧 None 💨 5 mph H 61%29.83 inHg

10:00 PM

Clear night

69° 💧 None 💨 3 mph H 75%29.85 inHg

Tomorrow

1:00 AM

Clear night

66° 💧 None 💨 1 mph H 86%29.85 inHg

4:00 AM

Clear night

63° 💧 None 💨 1 mph H 96%29.83 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 2 mph H 99%29.85 inHg

10:00 AM

Sunny

77° 💧 None 💨 2 mph H 61%29.88 inHg

1:00 PM

Sunny

87° 💧 None 💨 5 mph H 39%29.83 inHg

4:00 PM

Sunny

88° 💧 None 💨 7 mph H 38%29.80 inHg

7:00 PM

Clear night

79° 💧 None 💨 5 mph H 56%29.80 inHg

10:00 PM

Clear night

71° 💧 None 💨 3 mph H 78%29.88 inHg

Thursday

1:00 AM

Clear night

69° 💧 None 💨 1 mph H 90%29.88 inHg

4:00 AM

Mostly clear night

66° 💧 None 💨 0 mph H 98%29.85 inHg

7:00 AM

Fog

64° 💧 None 💨 0 mph H 100%29.88 inHg

10:00 AM

Sunny

76° 💧 None 💨 3 mph H 68%29.88 inHg

1:00 PM

Sunny

86° 💧 None 💨 5 mph H 45%29.88 inHg

Today

4:00 PM

Sunny

81° 💧 None 💨 8 mph H 50%29.83 inHg

5:00 PM

Sunny

79° 💧 None 💨 7 mph H 52%29.80 inHg

6:00 PM

Sunny

76° 💧 None 💨 6 mph H 56%29.80 inHg

7:00 PM

Clear night

73° 💧 None 💨 5 mph H 61%29.83 inHg

8:00 PM

Clear night

72° 💧 None 💨 4 mph H 65%29.83 inHg

9:00 PM

Clear night

70° 💧 None 💨 4 mph H 70%29.85 inHg

10:00 PM

Clear night

69° 💧 None 💨 3 mph H 75%29.85 inHg

11:00 PM

Clear night

68° 💧 None 💨 2 mph H 79%29.85 inHg

Tomorrow

12:00 AM

Clear night

67° 💧 None 💨 1 mph H 82%29.85 inHg

1:00 AM

Clear night

66° 💧 None 💨 1 mph H 86%29.85 inHg

2:00 AM

Clear night

65° 💧 None 💨 1 mph H 89%29.85 inHg

3:00 AM

Clear night

64° 💧 None 💨 1 mph H 93%29.85 inHg

4:00 AM

Clear night

63° 💧 None 💨 1 mph H 96%29.83 inHg

5:00 AM

Mostly clear night

63° 💧 None 💨 2 mph H 97%29.83 inHg

6:00 AM

Mostly clear night

62° 💧 None 💨 1 mph H 98%29.85 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 2 mph H 99%29.85 inHg

8:00 AM

Mostly sunny

67° 💧 None 💨 2 mph H 86%29.85 inHg

9:00 AM

Mostly sunny

72° 💧 None 💨 1 mph H 72%29.88 inHg

10:00 AM

Sunny

77° 💧 None 💨 2 mph H 61%29.88 inHg

11:00 AM

Sunny

81° 💧 None 💨 3 mph H 52%29.85 inHg

12:00 PM

Sunny

85° 💧 None 💨 4 mph H 45%29.85 inHg

1:00 PM

Sunny

87° 💧 None 💨 5 mph H 39%29.83 inHg

2:00 PM

Sunny

89° 💧 None 💨 6 mph H 36%29.80 inHg

3:00 PM

Sunny

89° 💧 None 💨 7 mph H 36%29.80 inHg

4:00 PM

Sunny

88° 💧 None 💨 7 mph H 38%29.80 inHg

5:00 PM

Sunny

86° 💧 None 💨 5 mph H 40%29.77 inHg

6:00 PM

Sunny

83° 💧 None 💨 5 mph H 47%29.80 inHg

7:00 PM

Clear night

79° 💧 None 💨 5 mph H 56%29.80 inHg

8:00 PM

Clear night

76° 💧 None 💨 6 mph H 66%29.83 inHg

9:00 PM

Clear night

73° 💧 None 💨 6 mph H 72%29.85 inHg

10:00 PM

Clear night

71° 💧 None 💨 3 mph H 78%29.88 inHg

11:00 PM

Clear night

70° 💧 None 💨 2 mph H 83%29.88 inHg

Thursday

12:00 AM

Clear night

69° 💧 None 💨 1 mph H 88%29.88 inHg

1:00 AM

Clear night

69° 💧 None 💨 1 mph H 90%29.88 inHg

2:00 AM

Clear night

68° 💧 None 💨 0 mph H 92%29.88 inHg

3:00 AM

Clear night

67° 💧 None 💨 1 mph H 95%29.85 inHg

4:00 AM

Mostly clear night

66° 💧 None 💨 0 mph H 98%29.85 inHg

5:00 AM

Fog at night

65° 💧 None 💨 1 mph H 98%29.85 inHg

6:00 AM

Fog at night

65° 💧 None 💨 1 mph H 99%29.85 inHg

7:00 AM

Fog

64° 💧 None 💨 0 mph H 100%29.88 inHg

8:00 AM

Mostly cloudy

68° 💧 None 💨 2 mph H 93%29.88 inHg

9:00 AM

Partly cloudy

72° 💧 None 💨 3 mph H 82%29.88 inHg

10:00 AM

Sunny

76° 💧 None 💨 3 mph H 68%29.88 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 4 mph H 57%29.88 inHg

12:00 PM

Sunny

83° 💧 None 💨 5 mph H 50%29.88 inHg

1:00 PM

Sunny

86° 💧 None 💨 5 mph H 45%29.88 inHg

2:00 PM

Sunny

87° 💧 None 💨 5 mph H 42%29.85 inHg

3:00 PM

Sunny

87° 💧 None 💨 6 mph H 43%29.83 inHg

4:00 PM

Sunny

86° 💧 None 💨 6 mph H 44%29.83 inHg

5:00 PM

Sunny

84° 💧 None 💨 6 mph H 49%29.83 inHg

6:00 PM

Sunny

80° 💧 None 💨 6 mph H 57%29.83 inHg

7:00 PM

Clear night

76° 💧 None 💨 6 mph H 66%29.85 inHg

8:00 PM

Clear night

74° 💧 None 💨 5 mph H 72%29.85 inHg

9:00 PM

Clear night

72° 💧 None 💨 3 mph H 77%29.88 inHg

10:00 PM

Clear night

71° 💧 None 💨 2 mph H 81%29.88 inHg

11:00 PM

Clear night

70° 💧 None 💨 2 mph H 86%29.88 inHg

Friday

12:00 AM

Clear night

70° 💧 None 💨 0 mph H 88%29.88 inHg

1:00 AM

Clear night

69° 💧 None 💨 1 mph H 89%29.88 inHg

2:00 AM

Clear night

68° 💧 None 💨 1 mph H 92%29.88 inHg

3:00 AM

Mostly cloudy night

67° 💧 None 💨 0 mph H 95%29.88 inHg

4:00 AM

Clear night

66° 💧 None 💨 1 mph H 97%29.88 inHg

5:00 AM

Clear night

66° 💧 None 💨 1 mph H 98%29.88 inHg

8:00 AM

Partly cloudy

66° 💧 None 💨 1 mph H 89%29.91 inHg

11:00 AM

Sunny

85° 💧 None 💨 2 mph H 43%29.91 inHg

2:00 PM

Overcast

96° 💧 None 💨 5 mph H 23%29.83 inHg

5:00 PM

Mostly sunny

90° 💧 None 💨 9 mph H 35%29.80 inHg

8:00 PM

Overcast night

79° 💧 None 💨 7 mph H 47%29.83 inHg

11:00 PM

Clear night

73° 💧 None 💨 3 mph H 68%29.88 inHg

Saturday

2:00 AM

Overcast night

69° 💧 None 💨 1 mph H 82%29.85 inHg

5:00 AM

Partly cloudy night

65° 💧 None 💨 0 mph H 90%29.83 inHg

8:00 AM

Overcast

68° 💧 None 💨 2 mph H 72%29.85 inHg

11:00 AM

Partly cloudy

87° 💧 None 💨 1 mph H 34%29.85 inHg

2:00 PM

Partly cloudy

96° 💧 None 💨 7 mph H 19%29.80 inHg

5:00 PM

Overcast

91° 💧 None 💨 8 mph H 26%29.77 inHg

8:00 PM

Mostly cloudy night

79° 💧 None 💨 6 mph H 44%29.83 inHg

11:00 PM

Partly cloudy night

73° 💧 None 💨 2 mph H 57%29.85 inHg

Sunday

2:00 AM

Overcast night

69° 💧 None 💨 1 mph H 63%29.83 inHg

5:00 AM

Mostly clear night

66° 💧 None 💨 1 mph H 70%29.83 inHg

8:00 AM

Mostly cloudy

68° 💧 None 💨 2 mph H 72%29.88 inHg

11:00 AM

Mostly sunny

84° 💧 None 💨 4 mph H 34%29.88 inHg

2:00 PM

Sunny

89° 💧 None 💨 7 mph H 29%29.83 inHg

5:00 PM

Sunny

85° 💧 None 💨 9 mph H 33%29.80 inHg

8:00 PM

Clear night

74° 💧 None 💨 6 mph H 67%29.83 inHg

11:00 PM

Clear night

69° 💧 None 💨 4 mph H 82%29.85 inHg

Monday

2:00 AM

Clear night

65° 💧 None 💨 2 mph H 94%29.83 inHg

5:00 AM

Mostly cloudy night

61° 💧 None 💨 1 mph H 99%29.83 inHg

11:00 AM

Sunny

80° 💧 None 💨 1 mph H 44%29.83 inHg

5:00 PM

Sunny

83° 💧 None 💨 7 mph H 30%29.71 inHg

11:00 PM

Clear night

68° 💧 None 💨 0 mph H 63%29.77 inHg

Tuesday

5:00 AM

Clear night

62° 💧 None 💨 2 mph H 74%29.71 inHg

11:00 AM

Sunny

87° 💧 None 💨 1 mph H 23%29.74 inHg

5:00 PM

Sunny

91° 💧 None 💨 9 mph H 26%29.65 inHg

11:00 PM

Clear night

72° 💧 None 💨 2 mph H 61%29.74 inHg

Wednesday

5:00 AM

Clear night

65° 💧 None 💨 2 mph H 68%29.71 inHg

11:00 AM

Sunny

86° 💧 None 💨 3 mph H 33%29.74 inHg

5:00 PM

Sunny

89° 💧 None 💨 7 mph H 30%29.65 inHg

11:00 PM

Clear night

71° 💧 None 💨 1 mph H 65%29.74 inHg

Thursday

5:00 AM

Clear night

63° 💧 None 💨 0 mph H 85%29.71 inHg

11:00 AM

Sunny

87° 💧 None 💨 1 mph H 25%29.74 inHg

5:00 PM

Sunny

93° 💧 None 💨 7 mph H 24%29.68 inHg

11:00 PM

Clear night

73° 💧 None 💨 1 mph H 62%29.80 inHg

Friday

5:00 AM

Clear night

67° 💧 None 💨 1 mph H 76%29.77 inHg

11:00 AM

Sunny

91° 💧 None 💨 2 mph H 26%29.80 inHg

5:00 PM

Sunny

94° 💧 None 💨 8 mph H 29%29.71 inHg

11:00 PM

Clear night

77° 💧 None 💨 1 mph H 54%29.80 inHg

Saturday

5:00 AM

Clear night

72° 💧 None 💨 3 mph H 58%29.77 inHg

11:00 AM

Sunny

94° 💧 None 💨 1 mph H 26%29.80 inHg

5:00 PM

Mostly sunny

95° 💧 None 💨 8 mph H 24%29.68 inHg

11:00 PM

Clear night

79° 💧 None 💨 1 mph H 41%29.77 inHg

Sunday

5:00 AM

Clear night

70° 💧 None 💨 1 mph H 71%29.74 inHg

11:00 AM

Sunny

91° 💧 None 💨 1 mph H 26%29.77 inHg

5:00 PM

Sunny

94° 💧 None 💨 9 mph H 22%29.65 inHg

11:00 PM

Clear night

76° 💧 None 💨 2 mph H 47%29.77 inHg

Monday

5:00 AM

Mostly clear night

65° 💧 None 💨 1 mph H 97%29.74 inHg

11:00 AM

Sunny

86° 💧 None 💨 4 mph H 34%29.77 inHg

5:00 PM

Sunny

82° 💧 None 💨 9 mph H 30%29.68 inHg

11:00 PM

Mostly clear night

66° 💧 None 💨 3 mph H 89%29.77 inHg

Tuesday

5:00 AM

Mostly cloudy night

64° 💧 None 💨 1 mph H 97%29.77 inHg

11:00 AM

Sunny

75° 💧 None 💨 1 mph H 51%29.83 inHg

5:00 PM

Sunny

76° 💧 None 💨 8 mph H 55%29.77 inHg

11:00 PM

Clear night

66° 💧 None 💨 3 mph H 75%29.85 inHg

Wednesday

5:00 AM

Clear night

61° 💧 None 💨 1 mph H 93%29.85 inHg

In Placentia 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 Placentia

TomorrowTomorrow

Mostly sunny 89°/62° 💧 None 💨 7 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 87°/64° 💧 None 💨 6 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 96°/66° 💧 None 💨 9 mph

Saturday, Sep 26Sat Sep 26

Overcast 96°/65° 💧 None 💨 8 mph

Sunday, Sep 27Sun Sep 27

Overcast 89°/66° 💧 None 💨 9 mph

Monday, Sep 28Mon Sep 28

Mostly cloudy 83°/61° 💧 None 💨 7 mph

Tuesday, Sep 29Tue Sep 29

Sunny 91°/62° 💧 None 💨 9 mph

Wednesday, Sep 30Wed Sep 30

Sunny 89°/65° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Sunny 93°/63° 💧 None 💨 7 mph

Friday, Oct 2Fri Oct 2

Sunny 94°/67° 💧 None 💨 8 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 95°/72° 💧 None 💨 8 mph

Sunday, Oct 4Sun Oct 4

Sunny 94°/70° 💧 None 💨 9 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 86°/65° 💧 None 💨 9 mph

Tuesday, Oct 6Tue Oct 6

Mostly cloudy 76°/64° 💧 None 💨 8 mph

Wednesday, Oct 7Wed Oct 7

Sunny 61°/61° 💧 None 💨 1 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Placentia

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Placentia

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 3,4µg/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 10,4µg/m³

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

O₃ Ozone Moderate 100,2µg/m³

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

NO₂ Nitrogen dioxide Good 0,2µg/m³

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

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Placentia

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 7,4High 😐Moderate

Tomorrow UV 7,5High 🙂Fair

Thursday UV 7,3High 🙂Fair

Friday UV 7,6High 😐Moderate

Saturday UV 7,2High 😐Moderate

Sunday UV 8,0Very high —Unavailable

Monday UV 7,0High —Unavailable

Hourly UV index today

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

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor 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 Placentia

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · PLACENTIA, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

92/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 8:11 PM–5:17 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 88% Waxing Gibbous · Moon about 26° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 43° 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 min38%

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.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Placentia were last refreshed today at 3:20 PM. The current forecast period extends through 24/09/2026 at 1:00 PM. 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.