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Current weather in Waterloo is few clouds.

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Is the weather forecast for Waterloo updated regularly?

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

Now · 11:26 AM

Waterloo Weather & Hourly Forecast

United States · Alabama · 35677

89°F

Mostly sunny

Feels like: 95°F

💧 Humidity 51% 🌡 Pressure 29.97 inHg 💨 Wind 3 mph 👁 Visibility 24.9 mi ☁ Clouds 20% ☀️ UV index 5.5 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Waterloo

Today

12:00 PM

Mostly sunny

92° 💧 0.002 in 💨 2 mph H 43%29.94 inHg

3:00 PM

Partly cloudy

94° 💧 0.004 in 💨 4 mph H 38%29.88 inHg

6:00 PM

Partly cloudy

90° 💧 None 💨 2 mph H 46%29.85 inHg

9:00 PM

Mostly cloudy night

82° 💧 None 💨 4 mph H 68%29.91 inHg

Tomorrow

12:00 AM

Clear night

78° 💧 None 💨 3 mph H 77%29.91 inHg

3:00 AM

Clear night

75° 💧 None 💨 4 mph H 83%29.91 inHg

6:00 AM

Mostly cloudy night

74° 💧 None 💨 3 mph H 87%29.94 inHg

9:00 AM

Mostly sunny

82° 💧 None 💨 3 mph H 68%29.97 inHg

12:00 PM

Partly cloudy

92° 💧 0.003 in 💨 3 mph H 41%29.94 inHg

3:00 PM

Mostly cloudy

94° 💧 0.007 in 💨 1 mph H 37%29.88 inHg

6:00 PM

Light thunderstorms

87° 💧 0.015 in 💨 4 mph H 57%29.85 inHg

9:00 PM

Mostly clear night

80° 💧 0.001 in 💨 5 mph H 69%29.91 inHg

Tuesday

12:00 AM

Clear night

78° 💧 None 💨 1 mph H 77%29.91 inHg

3:00 AM

Mostly clear night

75° 💧 None 💨 1 mph H 91%29.94 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 2 mph H 94%29.97 inHg

9:00 AM

Mostly cloudy

79° 💧 0.001 in 💨 0 mph H 78%30.00 inHg

Today

12:00 PM

Mostly sunny

92° 💧 0.000 in 💨 2 mph H 43%29.94 inHg

1:00 PM

Mostly sunny

94° 💧 0.002 in 💨 2 mph H 40%29.91 inHg

2:00 PM

Mostly sunny

94° 💧 0.000 in 💨 3 mph H 39%29.91 inHg

3:00 PM

Partly cloudy

94° 💧 0.000 in 💨 4 mph H 38%29.88 inHg

4:00 PM

Light thunderstorms

93° 💧 0.003 in 💨 3 mph H 38%29.85 inHg

5:00 PM

Strong thunderstorm

92° 💧 0.002 in 💨 2 mph H 39%29.85 inHg

6:00 PM

Partly cloudy

90° 💧 None 💨 2 mph H 46%29.85 inHg

7:00 PM

Partly cloudy night

85° 💧 None 💨 3 mph H 60%29.85 inHg

8:00 PM

Partly cloudy night

83° 💧 None 💨 4 mph H 68%29.88 inHg

9:00 PM

Mostly cloudy night

82° 💧 None 💨 4 mph H 68%29.91 inHg

10:00 PM

Mostly clear night

81° 💧 None 💨 4 mph H 70%29.91 inHg

11:00 PM

Clear night

80° 💧 None 💨 6 mph H 70%29.91 inHg

Tomorrow

12:00 AM

Clear night

78° 💧 None 💨 3 mph H 77%29.91 inHg

1:00 AM

Mostly clear night

77° 💧 None 💨 3 mph H 79%29.91 inHg

2:00 AM

Clear night

76° 💧 None 💨 3 mph H 82%29.91 inHg

3:00 AM

Clear night

75° 💧 None 💨 4 mph H 83%29.91 inHg

4:00 AM

Mostly clear night

75° 💧 None 💨 3 mph H 84%29.91 inHg

5:00 AM

Partly cloudy night

74° 💧 None 💨 3 mph H 86%29.91 inHg

6:00 AM

Mostly cloudy night

74° 💧 None 💨 3 mph H 87%29.94 inHg

7:00 AM

Mostly sunny

74° 💧 None 💨 3 mph H 88%29.94 inHg

8:00 AM

Sunny

78° 💧 None 💨 4 mph H 79%29.94 inHg

9:00 AM

Mostly sunny

82° 💧 None 💨 3 mph H 68%29.97 inHg

10:00 AM

Mostly sunny

86° 💧 None 💨 4 mph H 57%29.97 inHg

11:00 AM

Mostly sunny

90° 💧 None 💨 4 mph H 48%29.97 inHg

12:00 PM

Partly cloudy

92° 💧 0.001 in 💨 3 mph H 41%29.94 inHg

1:00 PM

Partly cloudy

93° 💧 0.001 in 💨 3 mph H 39%29.91 inHg

2:00 PM

Partly cloudy

94° 💧 None 💨 2 mph H 38%29.88 inHg

3:00 PM

Mostly cloudy

94° 💧 None 💨 1 mph H 37%29.88 inHg

4:00 PM

Mostly cloudy

94° 💧 None 💨 2 mph H 37%29.85 inHg

5:00 PM

Light thunderstorms

91° 💧 0.007 in 💨 5 mph H 41%29.85 inHg

6:00 PM

Light thunderstorms

87° 💧 0.012 in 💨 4 mph H 57%29.85 inHg

7:00 PM

Mostly cloudy night

83° 💧 0.000 in 💨 5 mph H 61%29.88 inHg

8:00 PM

Mostly cloudy night

81° 💧 0.002 in 💨 6 mph H 65%29.88 inHg

9:00 PM

Mostly clear night

80° 💧 0.001 in 💨 5 mph H 69%29.91 inHg

10:00 PM

Mostly clear night

79° 💧 0.001 in 💨 5 mph H 72%29.94 inHg

11:00 PM

Mostly clear night

79° 💧 None 💨 3 mph H 75%29.94 inHg

Tuesday

12:00 AM

Clear night

78° 💧 None 💨 1 mph H 77%29.91 inHg

1:00 AM

Clear night

78° 💧 None 💨 0 mph H 79%29.91 inHg

2:00 AM

Mostly clear night

76° 💧 None 💨 0 mph H 85%29.94 inHg

3:00 AM

Mostly clear night

75° 💧 None 💨 1 mph H 91%29.94 inHg

4:00 AM

Partly cloudy night

74° 💧 None 💨 2 mph H 94%29.94 inHg

5:00 AM

Partly cloudy night

74° 💧 None 💨 1 mph H 94%29.94 inHg

6:00 AM

Mostly cloudy night

73° 💧 None 💨 2 mph H 94%29.97 inHg

7:00 AM

Overcast

73° 💧 None 💨 2 mph H 93%29.97 inHg

8:00 AM

Overcast

76° 💧 None 💨 2 mph H 87%30.00 inHg

9:00 AM

Mostly cloudy

79° 💧 None 💨 0 mph H 78%30.00 inHg

10:00 AM

Sunny

82° 💧 None 💨 4 mph H 68%30.03 inHg

11:00 AM

Sunny

85° 💧 0.001 in 💨 6 mph H 58%30.03 inHg

12:00 PM

Strong thunderstorm

87° 💧 0.002 in 💨 5 mph H 52%30.00 inHg

1:00 PM

Mostly sunny

89° 💧 0.002 in 💨 4 mph H 49%30.00 inHg

2:00 PM

Strong thunderstorm

90° 💧 0.001 in 💨 3 mph H 45%29.97 inHg

3:00 PM

Strong thunderstorm

90° 💧 0.001 in 💨 3 mph H 43%29.94 inHg

4:00 PM

Light rain

85° 💧 0.008 in 💨 6 mph H 54%29.94 inHg

5:00 PM

Light rain

85° 💧 0.008 in 💨 3 mph H 57%29.94 inHg

6:00 PM

Partly cloudy

82° 💧 0.004 in 💨 4 mph H 66%29.97 inHg

7:00 PM

Light rain

77° 💧 0.021 in 💨 6 mph H 79%30.00 inHg

Wednesday

4:00 AM

Clear night

70° 💧 None 💨 7 mph H 73%30.06 inHg

7:00 AM

Sunny

69° 💧 None 💨 6 mph H 77%30.09 inHg

10:00 AM

Sunny

79° 💧 None 💨 6 mph H 59%30.12 inHg

1:00 PM

Mostly sunny

86° 💧 None 💨 7 mph H 47%30.09 inHg

4:00 PM

Mostly sunny

86° 💧 None 💨 7 mph H 42%30.03 inHg

7:00 PM

Partly cloudy night

80° 💧 None 💨 6 mph H 49%30.06 inHg

10:00 PM

Mostly clear night

76° 💧 None 💨 8 mph H 54%30.09 inHg

Thursday

1:00 AM

Clear night

71° 💧 None 💨 8 mph H 60%30.09 inHg

4:00 AM

Clear night

68° 💧 None 💨 6 mph H 69%30.09 inHg

7:00 AM

Sunny

67° 💧 None 💨 5 mph H 78%30.12 inHg

10:00 AM

Light rain

77° 💧 None 💨 5 mph H 69%30.15 inHg

1:00 PM

Mostly sunny

84° 💧 None 💨 3 mph H 47%30.09 inHg

4:00 PM

Overcast

87° 💧 None 💨 4 mph H 36%30.03 inHg

7:00 PM

Partly cloudy night

80° 💧 None 💨 3 mph H 48%30.03 inHg

10:00 PM

Partly cloudy night

76° 💧 None 💨 5 mph H 54%30.09 inHg

Friday

1:00 AM

Mostly clear night

72° 💧 None 💨 4 mph H 76%30.09 inHg

4:00 AM

Overcast night

70° 💧 None 💨 1 mph H 83%30.09 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 3 mph H 91%30.12 inHg

10:00 AM

Sunny

80° 💧 None 💨 3 mph H 60%30.12 inHg

1:00 PM

Partly cloudy

86° 💧 None 💨 3 mph H 42%30.09 inHg

4:00 PM

Mostly sunny

88° 💧 None 💨 5 mph H 35%30.00 inHg

7:00 PM

Clear night

82° 💧 None 💨 2 mph H 46%29.97 inHg

10:00 PM

Partly cloudy night

78° 💧 None 💨 8 mph H 39%30.03 inHg

Saturday

1:00 AM

Partly cloudy night

73° 💧 None 💨 7 mph H 55%30.03 inHg

7:00 AM

Partly cloudy

71° 💧 None 💨 5 mph H 69%30.03 inHg

1:00 PM

Overcast

67° 💧 None 💨 4 mph H 74%30.06 inHg

7:00 PM

Mostly cloudy night

84° 💧 None 💨 5 mph H 42%30.03 inHg

Sunday

1:00 AM

Overcast night

76° 💧 None 💨 4 mph H 61%30.00 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 4 mph H 71%29.97 inHg

1:00 PM

Partly cloudy

71° 💧 None 💨 2 mph H 78%29.97 inHg

7:00 PM

Mostly clear night

85° 💧 None 💨 4 mph H 42%29.91 inHg

Monday

1:00 AM

Clear night

77° 💧 None 💨 6 mph H 62%29.85 inHg

7:00 AM

Partly cloudy

69° 💧 None 💨 4 mph H 76%29.88 inHg

1:00 PM

Mostly sunny

64° 💧 None 💨 5 mph H 50%29.91 inHg

7:00 PM

Clear night

84° 💧 None 💨 4 mph H 24%29.88 inHg

Tuesday

1:00 AM

Clear night

76° 💧 None 💨 6 mph H 31%29.80 inHg

7:00 AM

Sunny

67° 💧 None 💨 7 mph H 34%29.83 inHg

1:00 PM

Partly cloudy

64° 💧 None 💨 6 mph H 48%29.85 inHg

7:00 PM

Overcast night

87° 💧 None 💨 4 mph H 33%29.80 inHg

Wednesday

1:00 AM

Overcast night

79° 💧 None 💨 2 mph H 46%29.77 inHg

7:00 AM

Overcast

76° 💧 None 💨 8 mph H 54%29.80 inHg

1:00 PM

Moderate rain

68° 💧 None 💨 8 mph H 98%29.83 inHg

7:00 PM

Light rain

74° 💧 None 💨 9 mph H 98%29.83 inHg

Thursday

1:00 AM

Light rain

74° 💧 None 💨 8 mph H 99%29.83 inHg

7:00 AM

Heavy rain

70° 💧 None 💨 4 mph H 100%29.88 inHg

1:00 PM

Moderate rain

71° 💧 None 💨 7 mph H 100%29.94 inHg

7:00 PM

Light rain

76° 💧 None 💨 7 mph H 89%29.97 inHg

Friday

1:00 AM

Light rain

73° 💧 None 💨 1 mph H 99%29.97 inHg

7:00 AM

Mostly cloudy

71° 💧 None 💨 3 mph H 100%30.00 inHg

1:00 PM

Light rain

71° 💧 None 💨 4 mph H 99%30.03 inHg

7:00 PM

Overcast night

76° 💧 None 💨 5 mph H 91%30.03 inHg

Saturday

1:00 AM

Mostly cloudy night

74° 💧 None 💨 2 mph H 96%29.97 inHg

7:00 AM

Partly cloudy

73° 💧 None 💨 6 mph H 85%30.00 inHg

1:00 PM

Overcast

73° 💧 None 💨 6 mph H 79%30.00 inHg

7:00 PM

Mostly cloudy night

80° 💧 None 💨 8 mph H 75%30.00 inHg

Sunday

1:00 AM

Partly cloudy night

77° 💧 None 💨 5 mph H 77%29.94 inHg

7:00 AM

Sunny

73° 💧 None 💨 7 mph H 88%29.97 inHg

1:00 PM

Overcast

72° 💧 None 💨 7 mph H 99%30.03 inHg

7:00 PM

Light rain

82° 💧 None 💨 9 mph H 74%30.03 inHg

Monday

1:00 AM

Overcast night

73° 💧 None 💨 4 mph H 99%30.06 inHg

In Waterloo and, more broadly, across the state of Alabama: The rest of the day will be mostly sunny with a few clouds, maintaining hot conditions with temperatures ranging from 77 to 89 degrees Fahrenheit. Light northeast winds will persist, blowing at up to 4 mph, with occasional gusts reaching 9 mph. A slight chance of rain remains, with possible accumulation around 0.01 inches and a maximum probability of 20%. Overall, expect warm and mostly clear weather through the afternoon, with only a minimal chance of light showers. It’s a good idea to stay hydrated if you're outdoors, especially during the peak heat hours.

15-Day Weather Outlook for Waterloo

TomorrowTomorrow

Light thunderstorms 94°/74° 💧 None 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Strong thunderstorm 90°/73° 💧 None 💨 6 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 86°/69° 💧 0.083 in 💨 8 mph

Thursday, Sep 24Thu Sep 24

Light rain 87°/67° 💧 0.023 in 💨 8 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 88°/68° 💧 0.008 in 💨 8 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 84°/67° 💧 0.069 in 💨 7 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 85°/71° 💧 0.015 in 💨 4 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 84°/64° 💧 0.018 in 💨 6 mph

Tuesday, Sep 29Tue Sep 29

Partly cloudy 87°/64° 💧 None 💨 7 mph

Wednesday, Sep 30Wed Sep 30

Moderate rain 79°/68° 💧 0.637 in 💨 9 mph

Thursday, Oct 1Thu Oct 1

Heavy rain 76°/70° 💧 1.666 in 💨 8 mph

Friday, Oct 2Fri Oct 2

Light rain 76°/71° 💧 0.442 in 💨 5 mph

Saturday, Oct 3Sat Oct 3

Mostly cloudy 80°/73° 💧 0.017 in 💨 8 mph

Sunday, Oct 4Sun Oct 4

Light rain 82°/72° 💧 0.133 in 💨 9 mph

Monday, Oct 5Mon Oct 5

Overcast 73°/73° 💧 0.195 in 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Waterloo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Waterloo

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 12:00 PM

PM2.5 Fine particles Fair 10,3µg/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 Good 11,8µg/m³

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

O₃ Ozone Moderate 100,4µg/m³

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

NO₂ Nitrogen dioxide Good 2,5µg/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 Waterloo

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 7,2High 😐Moderate

Tomorrow UV 7,3High 😐Moderate

Tuesday UV 7,3High 😐Moderate

Wednesday UV 7,4High 🙂Fair

Thursday UV 7,0High 🙂Fair

Friday UV 6,0High —Unavailable

Saturday UV 6,0High —Unavailable

Hourly UV index today

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

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 Waterloo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WATERLOO, ALABAMA

Tonight's Stargazing & Shooting Stars

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

99/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:16 PM–5:15 AM

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

☾ Moonlight 72% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 76° 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 min80%

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

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

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.

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Forecast data for Waterloo were last refreshed today at 11:26 AM. The current forecast period extends through 22/09/2026 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.