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Current weather in Union is clear sky.

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

Now · 8:35 PM

Union Weather & Hourly Forecast

United States · Louisiana · 70723

80°F

Clear night

Feels like: 90°F

💧 Humidity 94% 🌡 Pressure 29.88 inHg 💨 Wind 4 mph 👁 Visibility 12.8 mi ☁ Clouds 5% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Union

Today

9:00 PM

Clear night

80° 💧 0.000 in 💨 4 mph H 94%29.88 inHg

Tomorrow

12:00 AM

Clear night

80° 💧 None 💨 5 mph H 96%29.88 inHg

3:00 AM

Clear night

78° 💧 None 💨 5 mph H 97%29.88 inHg

6:00 AM

Clear night

78° 💧 0.032 in 💨 4 mph H 98%29.91 inHg

9:00 AM

Sunny

81° 💧 0.001 in 💨 6 mph H 93%29.94 inHg

12:00 PM

Light thunderstorms

91° 💧 0.031 in 💨 4 mph H 66%29.94 inHg

3:00 PM

Severe thunderstorms

84° 💧 0.854 in 💨 4 mph H 89%29.91 inHg

6:00 PM

Mostly cloudy

80° 💧 0.003 in 💨 4 mph H 93%29.91 inHg

9:00 PM

Clear night

78° 💧 None 💨 0 mph H 96%29.94 inHg

Tuesday

12:00 AM

Mostly clear night

77° 💧 None 💨 2 mph H 99%29.97 inHg

3:00 AM

Fog at night

76° 💧 None 💨 1 mph H 100%29.97 inHg

6:00 AM

Fog at night

76° 💧 0.009 in 💨 3 mph H 99%29.97 inHg

9:00 AM

Light rain

79° 💧 0.017 in 💨 4 mph H 93%30.03 inHg

12:00 PM

Light rain

86° 💧 0.139 in 💨 6 mph H 72%30.06 inHg

3:00 PM

Mostly cloudy

84° 💧 0.003 in 💨 7 mph H 74%30.03 inHg

6:00 PM

Overcast

84° 💧 0.000 in 💨 7 mph H 76%30.00 inHg

Today

9:00 PM

Clear night

80° 💧 0.000 in 💨 4 mph H 94%29.88 inHg

10:00 PM

Clear night

80° 💧 None 💨 4 mph H 94%29.91 inHg

11:00 PM

Clear night

80° 💧 None 💨 5 mph H 95%29.88 inHg

Tomorrow

12:00 AM

Clear night

80° 💧 None 💨 5 mph H 96%29.88 inHg

1:00 AM

Mostly clear night

79° 💧 None 💨 5 mph H 96%29.88 inHg

2:00 AM

Clear night

79° 💧 None 💨 5 mph H 97%29.88 inHg

3:00 AM

Clear night

78° 💧 None 💨 5 mph H 97%29.88 inHg

4:00 AM

Clear night

78° 💧 None 💨 6 mph H 98%29.88 inHg

5:00 AM

Clear night

78° 💧 None 💨 5 mph H 98%29.91 inHg

6:00 AM

Clear night

78° 💧 None 💨 4 mph H 98%29.91 inHg

7:00 AM

Light thunderstorms

77° 💧 0.012 in 💨 5 mph H 98%29.94 inHg

8:00 AM

Light rain

78° 💧 0.021 in 💨 6 mph H 97%29.94 inHg

9:00 AM

Sunny

81° 💧 0.001 in 💨 6 mph H 93%29.94 inHg

10:00 AM

Sunny

84° 💧 0.000 in 💨 6 mph H 84%29.94 inHg

11:00 AM

Sunny

88° 💧 None 💨 5 mph H 73%29.94 inHg

12:00 PM

Light thunderstorms

91° 💧 0.002 in 💨 4 mph H 66%29.94 inHg

1:00 PM

Light thunderstorms

91° 💧 0.010 in 💨 3 mph H 64%29.91 inHg

2:00 PM

Light thunderstorms

92° 💧 0.019 in 💨 2 mph H 65%29.91 inHg

3:00 PM

Severe thunderstorms

84° 💧 0.423 in 💨 4 mph H 89%29.91 inHg

4:00 PM

Severe thunderstorms

80° 💧 0.405 in 💨 5 mph H 96%29.94 inHg

5:00 PM

Light rain

80° 💧 0.026 in 💨 5 mph H 96%29.88 inHg

6:00 PM

Mostly cloudy

80° 💧 0.003 in 💨 4 mph H 93%29.91 inHg

7:00 PM

Partly cloudy

79° 💧 0.001 in 💨 2 mph H 95%29.91 inHg

8:00 PM

Clear night

78° 💧 None 💨 3 mph H 96%29.91 inHg

9:00 PM

Clear night

78° 💧 None 💨 0 mph H 96%29.94 inHg

10:00 PM

Clear night

78° 💧 None 💨 0 mph H 96%29.94 inHg

11:00 PM

Clear night

77° 💧 None 💨 0 mph H 97%29.97 inHg

Tuesday

12:00 AM

Mostly clear night

77° 💧 None 💨 2 mph H 99%29.97 inHg

1:00 AM

Fog at night

76° 💧 None 💨 1 mph H 99%29.97 inHg

2:00 AM

Fog at night

76° 💧 None 💨 0 mph H 100%29.97 inHg

3:00 AM

Fog at night

76° 💧 None 💨 1 mph H 100%29.97 inHg

4:00 AM

Fog at night

76° 💧 None 💨 2 mph H 100%29.97 inHg

5:00 AM

Fog at night

76° 💧 None 💨 2 mph H 100%29.97 inHg

6:00 AM

Fog at night

76° 💧 None 💨 3 mph H 99%29.97 inHg

7:00 AM

Fog

76° 💧 None 💨 3 mph H 99%30.00 inHg

8:00 AM

Light thunderstorms

77° 💧 0.009 in 💨 6 mph H 98%30.03 inHg

9:00 AM

Light rain

79° 💧 0.007 in 💨 4 mph H 93%30.03 inHg

10:00 AM

Light rain

81° 💧 0.007 in 💨 7 mph H 89%30.06 inHg

11:00 AM

Light rain

84° 💧 0.004 in 💨 6 mph H 81%30.06 inHg

12:00 PM

Light rain

86° 💧 0.007 in 💨 6 mph H 72%30.06 inHg

1:00 PM

Light thunderstorms

80° 💧 0.053 in 💨 14 mph H 84%30.06 inHg

2:00 PM

Light thunderstorms

80° 💧 0.079 in 💨 4 mph H 87%30.03 inHg

3:00 PM

Mostly cloudy

84° 💧 0.002 in 💨 7 mph H 74%30.03 inHg

4:00 PM

Overcast

86° 💧 0.000 in 💨 7 mph H 69%30.00 inHg

5:00 PM

Overcast

85° 💧 0.000 in 💨 8 mph H 69%30.00 inHg

6:00 PM

Overcast

84° 💧 0.000 in 💨 7 mph H 76%30.00 inHg

7:00 PM

Overcast

82° 💧 None 💨 5 mph H 82%30.00 inHg

8:00 PM

Mostly cloudy night

80° 💧 None 💨 5 mph H 86%30.03 inHg

9:00 PM

Partly cloudy night

79° 💧 None 💨 4 mph H 88%30.03 inHg

10:00 PM

Partly cloudy night

79° 💧 None 💨 4 mph H 90%30.06 inHg

11:00 PM

Mostly cloudy night

78° 💧 None 💨 4 mph H 90%30.06 inHg

Wednesday

12:00 AM

Mostly cloudy night

78° 💧 None 💨 3 mph H 91%30.06 inHg

1:00 AM

Mostly cloudy night

77° 💧 None 💨 4 mph H 92%30.03 inHg

2:00 AM

Mostly cloudy night

77° 💧 None 💨 3 mph H 93%30.03 inHg

3:00 AM

Partly cloudy night

76° 💧 None 💨 2 mph H 94%30.03 inHg

4:00 AM

Mostly cloudy night

76° 💧 None 💨 3 mph H 96%30.03 inHg

5:00 AM

Mostly cloudy night

76° 💧 0.001 in 💨 4 mph H 97%30.06 inHg

6:00 AM

Light rain

76° 💧 0.011 in 💨 5 mph H 97%30.06 inHg

7:00 AM

Thunderstorms

74° 💧 0.099 in 💨 4 mph H 99%30.06 inHg

4:00 PM

Moderate rain

79° 💧 None 💨 5 mph H 89%30.03 inHg

7:00 PM

Overcast

79° 💧 None 💨 3 mph H 93%30.03 inHg

10:00 PM

Overcast night

76° 💧 None 💨 4 mph H 97%30.03 inHg

Thursday

1:00 AM

Mostly clear night

75° 💧 None 💨 2 mph H 97%30.03 inHg

4:00 AM

Overcast night

75° 💧 None 💨 1 mph H 99%30.00 inHg

7:00 AM

Overcast

75° 💧 None 💨 2 mph H 99%30.03 inHg

10:00 AM

Light rain

82° 💧 None 💨 3 mph H 82%30.03 inHg

1:00 PM

Light rain

84° 💧 None 💨 2 mph H 75%30.00 inHg

4:00 PM

Moderate rain

76° 💧 None 💨 2 mph H 96%29.94 inHg

7:00 PM

Overcast

77° 💧 None 💨 2 mph H 97%29.91 inHg

10:00 PM

Mostly cloudy night

76° 💧 None 💨 3 mph H 98%29.94 inHg

Friday

1:00 AM

Overcast night

74° 💧 None 💨 2 mph H 99%29.91 inHg

4:00 AM

Partly cloudy night

74° 💧 None 💨 1 mph H 99%29.91 inHg

7:00 AM

Light rain

73° 💧 None 💨 2 mph H 99%29.91 inHg

10:00 AM

Overcast

79° 💧 None 💨 2 mph H 86%29.94 inHg

1:00 PM

Light rain

84° 💧 None 💨 2 mph H 73%29.91 inHg

4:00 PM

Light rain

86° 💧 None 💨 1 mph H 71%29.83 inHg

7:00 PM

Light rain

78° 💧 None 💨 3 mph H 96%29.83 inHg

10:00 PM

Partly cloudy night

76° 💧 None 💨 2 mph H 98%29.88 inHg

Saturday

1:00 AM

Clear night

75° 💧 None 💨 3 mph H 97%29.88 inHg

4:00 AM

Mostly clear night

75° 💧 None 💨 3 mph H 98%29.88 inHg

7:00 AM

Light rain

74° 💧 None 💨 5 mph H 99%29.91 inHg

10:00 AM

Overcast

79° 💧 None 💨 3 mph H 88%29.97 inHg

1:00 PM

Overcast

85° 💧 None 💨 2 mph H 73%29.94 inHg

7:00 PM

Partly cloudy

88° 💧 None 💨 1 mph H 72%29.97 inHg

Sunday

1:00 AM

Overcast night

81° 💧 None 💨 2 mph H 92%29.94 inHg

7:00 AM

Partly cloudy

77° 💧 None 💨 1 mph H 98%30.00 inHg

1:00 PM

Light rain

76° 💧 None 💨 0 mph H 99%30.03 inHg

7:00 PM

Partly cloudy

87° 💧 None 💨 2 mph H 71%30.03 inHg

Monday

1:00 AM

Partly cloudy night

80° 💧 None 💨 2 mph H 92%30.00 inHg

7:00 AM

Partly cloudy

76° 💧 None 💨 2 mph H 98%30.03 inHg

1:00 PM

Partly cloudy

76° 💧 None 💨 3 mph H 99%30.06 inHg

7:00 PM

Light rain

88° 💧 None 💨 5 mph H 69%30.03 inHg

Tuesday

1:00 AM

Mostly clear night

79° 💧 None 💨 1 mph H 96%30.00 inHg

7:00 AM

Sunny

77° 💧 None 💨 3 mph H 97%30.00 inHg

1:00 PM

Sunny

76° 💧 None 💨 3 mph H 98%30.06 inHg

7:00 PM

Mostly cloudy

88° 💧 None 💨 3 mph H 70%30.09 inHg

Wednesday

1:00 AM

Light thunderstorms

81° 💧 None 💨 7 mph H 87%30.06 inHg

7:00 AM

Mostly sunny

75° 💧 None 💨 2 mph H 98%30.09 inHg

1:00 PM

Mostly sunny

75° 💧 None 💨 4 mph H 99%30.12 inHg

7:00 PM

Mostly sunny

89° 💧 None 💨 5 mph H 69%30.12 inHg

Thursday

1:00 AM

Mostly clear night

82° 💧 None 💨 2 mph H 89%30.06 inHg

7:00 AM

Sunny

78° 💧 None 💨 2 mph H 97%30.09 inHg

1:00 PM

Sunny

77° 💧 None 💨 6 mph H 95%30.09 inHg

7:00 PM

Sunny

89° 💧 None 💨 11 mph H 61%30.06 inHg

Friday

1:00 AM

Partly cloudy night

82° 💧 None 💨 4 mph H 79%30.03 inHg

7:00 AM

Sunny

77° 💧 None 💨 4 mph H 94%30.03 inHg

1:00 PM

Sunny

76° 💧 None 💨 4 mph H 98%30.03 inHg

7:00 PM

Sunny

91° 💧 None 💨 5 mph H 58%30.00 inHg

Saturday

1:00 AM

Mostly clear night

81° 💧 None 💨 2 mph H 91%29.94 inHg

7:00 AM

Sunny

78° 💧 None 💨 7 mph H 94%29.94 inHg

1:00 PM

Sunny

73° 💧 None 💨 9 mph H 55%29.94 inHg

7:00 PM

Sunny

83° 💧 None 💨 10 mph H 44%30.00 inHg

Sunday

1:00 AM

Clear night

77° 💧 None 💨 8 mph H 52%29.91 inHg

7:00 AM

Sunny

68° 💧 None 💨 7 mph H 59%30.00 inHg

1:00 PM

Sunny

63° 💧 None 💨 7 mph H 59%30.00 inHg

7:00 PM

Sunny

77° 💧 None 💨 7 mph H 41%30.03 inHg

Monday

1:00 AM

Clear night

72° 💧 None 💨 4 mph H 63%29.97 inHg

7:00 AM

Mostly cloudy

66° 💧 None 💨 4 mph H 70%30.00 inHg

1:00 PM

Sunny

66° 💧 None 💨 7 mph H 73%30.03 inHg

In Union and, more broadly, across the state of Louisiana: The evening will feature a mix of sun and clouds, with temperatures remaining quite warm between 89 and 93 degrees Fahrenheit. Winds are expected to be light, coming from the southwest at around 5 mph, with gusts reaching up to 8 mph. No precipitation is anticipated during the night or in the early hours of the next day. Conditions will be calm, and there’s little chance of significant changes in the weather overnight. It should remain warm and relatively quiet through the evening hours.

15-Day Weather Outlook for Union

Tuesday, Sep 8Tue Sep 8

Light thunderstorms 86°/76° 💧 None 💨 14 mph

Wednesday, Sep 9Wed Sep 9

Thunderstorms 82°/74° 💧 0.299 in 💨 5 mph

Thursday, Sep 10Thu Sep 10

Moderate rain 84°/75° 💧 0.346 in 💨 4 mph

Friday, Sep 11Fri Sep 11

Light rain 86°/73° 💧 0.350 in 💨 3 mph

Saturday, Sep 12Sat Sep 12

Light rain 85°/74° 💧 0.413 in 💨 5 mph

Sunday, Sep 13Sun Sep 13

Light rain 88°/76° 💧 0.236 in 💨 2 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 87°/76° 💧 0.151 in 💨 3 mph

Tuesday, Sep 15Tue Sep 15

Light rain 88°/76° 💧 0.150 in 💨 5 mph

Wednesday, Sep 16Wed Sep 16

Light thunderstorms 88°/75° 💧 0.159 in 💨 7 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 89°/77° 💧 0.059 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Partly cloudy 89°/76° 💧 0.044 in 💨 11 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 91°/73° 💧 0.114 in 💨 9 mph

Sunday, Sep 20Sun Sep 20

Sunny 83°/63° 💧 None 💨 10 mph

Monday, Sep 21Mon Sep 21

Mostly cloudy 77°/66° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Union

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Union

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 PM

PM2.5 Fine particles Good 0,8µg/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 1,2µg/m³

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

O₃ Ozone Good 49,6µg/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.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Union

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 10,0Very high 😊Good

Tomorrow UV 9,8Very high 🙂Fair

Tuesday UV 9,7Very high 🙂Fair

Wednesday UV 9,2Very high 🙂Fair

Thursday UV 9,2Very high 😊Good

Friday UV 8,0Very high —Unavailable

Saturday UV 7,0High —Unavailable

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.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. High humidity can make it feel hotter.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Union

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · UNION, LOUISIANA

Tonight's Stargazing & Shooting Stars

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

93/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:41 PM–5:22 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 1° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 62° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min70%

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 Union were last refreshed today at 8:35 PM. The current forecast period extends through 08/09/2026 at 6:00 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.