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Current weather in Waterloo is overcast clouds.

Where can I find the hourly weather forecast for Waterloo?

This page shows hourly weather forecast for Waterloo, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Waterloo updated regularly?

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

Now · 1:52 AM

Waterloo Weather & Hourly Forecast

United States · Iowa · 50701

71°F

Overcast night

Feels like: 70°F

💧 Humidity 79% 🌡 Pressure 30.06 inHg 💨 Wind 9 mph 👁 Visibility 20.3 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Waterloo

Today

2:00 AM

Overcast night

71° 💧 None 💨 9 mph H 79%30.06 inHg

5:00 AM

Partly cloudy night

68° 💧 None 💨 9 mph H 80%30.09 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 7 mph H 81%30.12 inHg

11:00 AM

Mostly cloudy

73° 💧 None 💨 9 mph H 70%30.12 inHg

2:00 PM

Mostly cloudy

78° 💧 None 💨 11 mph H 56%30.06 inHg

5:00 PM

Overcast

78° 💧 None 💨 11 mph H 56%30.00 inHg

8:00 PM

Mostly cloudy night

73° 💧 None 💨 10 mph H 65%30.00 inHg

11:00 PM

Overcast night

71° 💧 None 💨 11 mph H 66%30.06 inHg

Tomorrow

2:00 AM

Overcast night

69° 💧 None 💨 10 mph H 73%30.03 inHg

5:00 AM

Clear night

68° 💧 None 💨 11 mph H 73%30.00 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 11 mph H 72%30.00 inHg

11:00 AM

Mostly sunny

78° 💧 None 💨 10 mph H 64%29.97 inHg

2:00 PM

Mostly cloudy

86° 💧 None 💨 9 mph H 59%29.94 inHg

5:00 PM

Mostly sunny

88° 💧 None 💨 9 mph H 61%29.88 inHg

8:00 PM

Thunderstorms

78° 💧 0.197 in 💨 8 mph H 91%29.94 inHg

11:00 PM

Light thunderstorms

75° 💧 0.498 in 💨 3 mph H 94%29.91 inHg

Today

2:00 AM

Overcast night

71° 💧 None 💨 9 mph H 79%30.06 inHg

3:00 AM

Mostly cloudy night

70° 💧 None 💨 10 mph H 79%30.06 inHg

4:00 AM

Overcast night

69° 💧 None 💨 9 mph H 80%30.06 inHg

5:00 AM

Partly cloudy night

68° 💧 None 💨 9 mph H 80%30.09 inHg

6:00 AM

Clear night

66° 💧 None 💨 8 mph H 82%30.09 inHg

7:00 AM

Mostly sunny

65° 💧 None 💨 8 mph H 82%30.09 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 7 mph H 81%30.12 inHg

9:00 AM

Mostly sunny

68° 💧 None 💨 8 mph H 77%30.12 inHg

10:00 AM

Partly cloudy

70° 💧 None 💨 9 mph H 74%30.12 inHg

11:00 AM

Mostly cloudy

73° 💧 None 💨 9 mph H 70%30.12 inHg

12:00 PM

Mostly cloudy

76° 💧 None 💨 10 mph H 64%30.09 inHg

1:00 PM

Overcast

77° 💧 None 💨 10 mph H 60%30.09 inHg

2:00 PM

Mostly cloudy

78° 💧 None 💨 11 mph H 56%30.06 inHg

3:00 PM

Mostly cloudy

79° 💧 None 💨 11 mph H 54%30.03 inHg

4:00 PM

Mostly cloudy

79° 💧 None 💨 10 mph H 54%30.03 inHg

5:00 PM

Overcast

78° 💧 None 💨 11 mph H 56%30.00 inHg

6:00 PM

Mostly cloudy

77° 💧 None 💨 10 mph H 60%30.00 inHg

7:00 PM

Partly cloudy

75° 💧 None 💨 10 mph H 64%30.00 inHg

8:00 PM

Mostly cloudy night

73° 💧 None 💨 10 mph H 65%30.00 inHg

9:00 PM

Mostly cloudy night

72° 💧 None 💨 11 mph H 65%30.03 inHg

10:00 PM

Overcast night

72° 💧 None 💨 11 mph H 64%30.03 inHg

11:00 PM

Overcast night

71° 💧 None 💨 11 mph H 66%30.06 inHg

Tomorrow

12:00 AM

Overcast night

70° 💧 None 💨 11 mph H 68%30.03 inHg

1:00 AM

Mostly cloudy night

70° 💧 None 💨 10 mph H 71%30.03 inHg

2:00 AM

Overcast night

69° 💧 None 💨 10 mph H 73%30.03 inHg

3:00 AM

Mostly cloudy night

69° 💧 None 💨 11 mph H 73%30.00 inHg

4:00 AM

Partly cloudy night

69° 💧 None 💨 11 mph H 73%30.00 inHg

5:00 AM

Clear night

68° 💧 None 💨 11 mph H 73%30.00 inHg

6:00 AM

Mostly clear night

68° 💧 None 💨 11 mph H 73%30.00 inHg

7:00 AM

Mostly sunny

68° 💧 None 💨 11 mph H 73%30.00 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 11 mph H 72%30.00 inHg

9:00 AM

Sunny

72° 💧 None 💨 10 mph H 70%30.00 inHg

10:00 AM

Mostly sunny

75° 💧 None 💨 10 mph H 66%30.00 inHg

11:00 AM

Mostly sunny

78° 💧 None 💨 10 mph H 64%29.97 inHg

12:00 PM

Sunny

81° 💧 None 💨 9 mph H 61%29.97 inHg

1:00 PM

Mostly sunny

84° 💧 None 💨 9 mph H 60%29.94 inHg

2:00 PM

Mostly cloudy

86° 💧 None 💨 9 mph H 59%29.94 inHg

3:00 PM

Partly cloudy

87° 💧 None 💨 9 mph H 60%29.91 inHg

4:00 PM

Mostly sunny

88° 💧 None 💨 9 mph H 60%29.91 inHg

5:00 PM

Mostly sunny

88° 💧 None 💨 9 mph H 61%29.88 inHg

6:00 PM

Mostly sunny

87° 💧 None 💨 8 mph H 67%29.88 inHg

7:00 PM

Overcast

85° 💧 None 💨 7 mph H 73%29.88 inHg

8:00 PM

Thunderstorms

78° 💧 0.133 in 💨 8 mph H 91%29.94 inHg

9:00 PM

Light rain

76° 💧 0.045 in 💨 4 mph H 96%29.94 inHg

10:00 PM

Light rain

76° 💧 0.019 in 💨 6 mph H 94%29.91 inHg

11:00 PM

Light thunderstorms

75° 💧 0.081 in 💨 3 mph H 94%29.91 inHg

Wednesday

12:00 AM

Thunderstorms

74° 💧 0.232 in 💨 2 mph H 95%29.94 inHg

1:00 AM

Thunderstorms

73° 💧 0.185 in 💨 4 mph H 96%29.94 inHg

2:00 AM

Severe thunderstorms

73° 💧 0.359 in 💨 2 mph H 96%29.97 inHg

3:00 AM

Light thunderstorms

73° 💧 0.076 in 💨 6 mph H 96%29.94 inHg

4:00 AM

Thunderstorms

73° 💧 0.232 in 💨 8 mph H 96%29.97 inHg

5:00 AM

Moderate rain

73° 💧 0.105 in 💨 9 mph H 95%29.97 inHg

6:00 AM

Light rain

72° 💧 0.064 in 💨 5 mph H 97%29.94 inHg

7:00 AM

Light rain

72° 💧 0.010 in 💨 6 mph H 97%29.97 inHg

8:00 AM

Overcast

72° 💧 None 💨 6 mph H 97%30.00 inHg

9:00 AM

Overcast

73° 💧 None 💨 5 mph H 97%30.00 inHg

10:00 AM

Overcast

73° 💧 None 💨 5 mph H 96%30.00 inHg

11:00 AM

Overcast

74° 💧 None 💨 6 mph H 90%30.03 inHg

12:00 PM

Overcast

77° 💧 None 💨 3 mph H 79%30.03 inHg

1:00 PM

Overcast

79° 💧 None 💨 3 mph H 71%30.00 inHg

2:00 PM

Mostly sunny

81° 💧 None 💨 5 mph H 63%30.00 inHg

3:00 PM

Sunny

82° 💧 None 💨 6 mph H 54%29.97 inHg

4:00 PM

Sunny

82° 💧 None 💨 7 mph H 51%29.97 inHg

5:00 PM

Sunny

82° 💧 None 💨 7 mph H 54%29.97 inHg

6:00 PM

Sunny

80° 💧 None 💨 7 mph H 60%29.97 inHg

7:00 PM

Sunny

76° 💧 None 💨 6 mph H 69%29.97 inHg

10:00 PM

Clear night

69° 💧 None 💨 7 mph H 76%30.03 inHg

Thursday

1:00 AM

Clear night

64° 💧 None 💨 5 mph H 86%30.03 inHg

4:00 AM

Clear night

60° 💧 None 💨 3 mph H 92%30.03 inHg

7:00 AM

Sunny

59° 💧 None 💨 3 mph H 95%30.06 inHg

10:00 AM

Sunny

69° 💧 None 💨 3 mph H 77%30.06 inHg

1:00 PM

Sunny

75° 💧 None 💨 4 mph H 55%30.03 inHg

4:00 PM

Sunny

77° 💧 None 💨 5 mph H 54%29.97 inHg

7:00 PM

Sunny

72° 💧 None 💨 3 mph H 74%29.94 inHg

10:00 PM

Clear night

66° 💧 None 💨 4 mph H 85%29.94 inHg

Friday

1:00 AM

Clear night

63° 💧 None 💨 6 mph H 83%29.94 inHg

4:00 AM

Clear night

62° 💧 None 💨 7 mph H 85%29.91 inHg

7:00 AM

Sunny

61° 💧 None 💨 9 mph H 87%29.91 inHg

10:00 AM

Sunny

70° 💧 None 💨 11 mph H 72%29.88 inHg

1:00 PM

Sunny

77° 💧 None 💨 12 mph H 60%29.80 inHg

4:00 PM

Mostly sunny

79° 💧 None 💨 14 mph H 57%29.74 inHg

7:00 PM

Overcast

74° 💧 None 💨 11 mph H 65%29.71 inHg

10:00 PM

Overcast night

71° 💧 None 💨 12 mph H 69%29.68 inHg

Saturday

1:00 AM

Clear night

69° 💧 None 💨 11 mph H 84%29.68 inHg

4:00 AM

Clear night

69° 💧 None 💨 6 mph H 90%29.74 inHg

7:00 AM

Sunny

67° 💧 None 💨 7 mph H 95%29.77 inHg

10:00 AM

Sunny

72° 💧 None 💨 8 mph H 62%29.85 inHg

1:00 PM

Mostly sunny

75° 💧 None 💨 6 mph H 55%29.88 inHg

7:00 PM

Sunny

73° 💧 None 💨 9 mph H 57%29.94 inHg

Sunday

1:00 AM

Partly cloudy night

70° 💧 None 💨 3 mph H 70%29.97 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 73%30.00 inHg

1:00 PM

Overcast

61° 💧 None 💨 8 mph H 84%30.06 inHg

7:00 PM

Light thunderstorms

60° 💧 None 💨 11 mph H 91%30.06 inHg

Monday

1:00 AM

Overcast night

61° 💧 None 💨 12 mph H 84%30.03 inHg

7:00 AM

Overcast

60° 💧 None 💨 9 mph H 88%30.06 inHg

1:00 PM

Overcast

61° 💧 None 💨 10 mph H 93%29.97 inHg

7:00 PM

Sunny

78° 💧 None 💨 10 mph H 80%29.88 inHg

Tuesday

1:00 AM

Mostly clear night

84° 💧 None 💨 16 mph H 60%29.65 inHg

7:00 AM

Overcast

67° 💧 None 💨 14 mph H 91%29.88 inHg

1:00 PM

Mostly cloudy

57° 💧 None 💨 11 mph H 84%30.03 inHg

7:00 PM

Partly cloudy

66° 💧 None 💨 9 mph H 61%30.15 inHg

Wednesday

1:00 AM

Clear night

63° 💧 None 💨 3 mph H 76%30.18 inHg

7:00 AM

Sunny

54° 💧 None 💨 4 mph H 91%30.27 inHg

1:00 PM

Sunny

51° 💧 None 💨 5 mph H 92%30.36 inHg

7:00 PM

Sunny

69° 💧 None 💨 4 mph H 61%30.39 inHg

Thursday

1:00 AM

Clear night

66° 💧 None 💨 5 mph H 76%30.33 inHg

7:00 AM

Sunny

58° 💧 None 💨 6 mph H 89%30.36 inHg

1:00 PM

Light rain

58° 💧 None 💨 3 mph H 93%30.39 inHg

7:00 PM

Overcast

68° 💧 None 💨 4 mph H 76%30.39 inHg

Friday

1:00 AM

Clear night

67° 💧 None 💨 4 mph H 82%30.33 inHg

7:00 AM

Sunny

59° 💧 None 💨 5 mph H 91%30.39 inHg

1:00 PM

Sunny

56° 💧 None 💨 7 mph H 92%30.42 inHg

7:00 PM

Partly cloudy

65° 💧 None 💨 13 mph H 63%30.47 inHg

Saturday

1:00 AM

Mostly clear night

59° 💧 None 💨 10 mph H 60%30.47 inHg

7:00 AM

Sunny

50° 💧 None 💨 7 mph H 73%30.50 inHg

1:00 PM

Sunny

45° 💧 None 💨 5 mph H 83%30.53 inHg

7:00 PM

Sunny

60° 💧 None 💨 6 mph H 50%30.47 inHg

Sunday

1:00 AM

Clear night

56° 💧 None 💨 4 mph H 69%30.36 inHg

7:00 AM

Sunny

48° 💧 None 💨 4 mph H 86%30.36 inHg

1:00 PM

Sunny

46° 💧 None 💨 5 mph H 92%30.39 inHg

7:00 PM

Sunny

62° 💧 None 💨 8 mph H 56%30.33 inHg

Monday

1:00 AM

Clear night

59° 💧 None 💨 5 mph H 69%30.24 inHg

7:00 AM

Overcast

53° 💧 None 💨 9 mph H 72%30.24 inHg

1:00 PM

Mostly sunny

49° 💧 None 💨 8 mph H 77%30.24 inHg

In Waterloo and, more broadly, across the state of Iowa: Tonight will be mostly cloudy with mild temperatures ranging from 73 to 74 degrees Fahrenheit. Expect a gentle east wind at around 11 mph, with gusts reaching up to 18 mph. No precipitation is expected during the evening hours, so conditions will remain dry. The moderate breeze will provide some movement in the air, but overall, it will be a relatively calm and mild evening. Temperatures are likely to stay steady and comfortable through the night.

15-Day Weather Outlook for Waterloo

TomorrowTomorrow

Mostly cloudy 88°/67° 💧 None 💨 11 mph

Wednesday, Sep 9Wed Sep 9

Thunderstorms 84°/70° 💧 0.825 in 💨 11 mph

Thursday, Sep 10Thu Sep 10

Sunny 77°/59° 💧 None 💨 7 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 79°/61° 💧 0.000 in 💨 14 mph

Saturday, Sep 12Sat Sep 12

Overcast 75°/67° 💧 0.007 in 💨 12 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 73°/61° 💧 0.032 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Light thunderstorms 61°/60° 💧 1.129 in 💨 12 mph

Tuesday, Sep 15Tue Sep 15

Overcast 84°/57° 💧 0.350 in 💨 16 mph

Wednesday, Sep 16Wed Sep 16

Partly cloudy 66°/51° 💧 None 💨 9 mph

Thursday, Sep 17Thu Sep 17

Sunny 69°/58° 💧 0.001 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Overcast 68°/56° 💧 0.002 in 💨 7 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 65°/45° 💧 0.001 in 💨 13 mph

Sunday, Sep 20Sun Sep 20

Sunny 60°/46° 💧 None 💨 6 mph

Monday, Sep 21Mon Sep 21

Overcast 62°/49° 💧 None 💨 9 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

Fair

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 7,9µg/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 8,4µg/m³

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

O₃ Ozone Fair 60,9µg/m³

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

NO₂ Nitrogen dioxide Good 2,2µg/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 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 7,1High 🙂Fair

Tomorrow UV 7,0High 🙂Fair

Wednesday UV 6,4High 🙂Fair

Thursday UV 6,3High 🙂Fair

Friday UV 7,0High 😊Good

Saturday UV 7,0High —Unavailable

Sunday UV 6,0High —Unavailable

Hourly UV index today

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

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.

Comfortable temperature conditions

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

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, IOWA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

68/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:13 PM–5:03 AM

☁ Cloud cover 42% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 26° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 86° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min64%

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 Waterloo were last refreshed today at 1:52 AM. The current forecast period extends through 08/09/2026 at 11:00 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.