What is the weather in Alton right now?

Current weather in Alton is few clouds.

Where can I find the hourly weather forecast for Alton?

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

Is the weather forecast for Alton updated regularly?

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

Now · 5:01 AM

Alton Weather & Hourly Forecast

United States · Missouri · 65606

73°F

Mostly clear night

Feels like: 75°F

💧 Humidity 78% 🌡 Pressure 30.00 inHg 💨 Wind 7 mph 👁 Visibility 17.2 mi ☁ Clouds 37% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Alton

Today

6:00 AM

Mostly cloudy night

72° 💧 None 💨 6 mph H 79%30.00 inHg

9:00 AM

Sunny

78° 💧 None 💨 6 mph H 65%30.03 inHg

12:00 PM

Sunny

88° 💧 None 💨 5 mph H 46%30.03 inHg

3:00 PM

Sunny

93° 💧 None 💨 5 mph H 36%29.97 inHg

6:00 PM

Sunny

91° 💧 None 💨 8 mph H 35%29.94 inHg

9:00 PM

Clear night

80° 💧 None 💨 7 mph H 45%30.03 inHg

Tomorrow

12:00 AM

Clear night

74° 💧 None 💨 5 mph H 55%30.06 inHg

3:00 AM

Clear night

71° 💧 None 💨 4 mph H 66%30.06 inHg

6:00 AM

Clear night

68° 💧 None 💨 3 mph H 75%30.09 inHg

9:00 AM

Mostly sunny

78° 💧 None 💨 2 mph H 55%30.09 inHg

12:00 PM

Mostly cloudy

90° 💧 None 💨 2 mph H 38%30.06 inHg

3:00 PM

Partly cloudy

96° 💧 None 💨 4 mph H 26%30.00 inHg

6:00 PM

Mostly sunny

94° 💧 None 💨 7 mph H 31%30.00 inHg

9:00 PM

Clear night

83° 💧 None 💨 6 mph H 46%30.03 inHg

Wednesday

12:00 AM

Clear night

79° 💧 None 💨 5 mph H 56%30.06 inHg

3:00 AM

Clear night

76° 💧 None 💨 5 mph H 63%30.06 inHg

Today

6:00 AM

Mostly cloudy night

72° 💧 None 💨 6 mph H 79%30.00 inHg

7:00 AM

Overcast

72° 💧 None 💨 6 mph H 79%30.03 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 6 mph H 73%30.03 inHg

9:00 AM

Sunny

78° 💧 None 💨 6 mph H 65%30.03 inHg

10:00 AM

Sunny

81° 💧 None 💨 6 mph H 58%30.03 inHg

11:00 AM

Sunny

85° 💧 None 💨 6 mph H 52%30.03 inHg

12:00 PM

Sunny

88° 💧 None 💨 5 mph H 46%30.03 inHg

1:00 PM

Sunny

90° 💧 None 💨 5 mph H 42%30.00 inHg

2:00 PM

Sunny

92° 💧 None 💨 5 mph H 38%29.97 inHg

3:00 PM

Sunny

93° 💧 None 💨 5 mph H 36%29.97 inHg

4:00 PM

Sunny

93° 💧 None 💨 5 mph H 34%29.94 inHg

5:00 PM

Sunny

93° 💧 None 💨 6 mph H 34%29.94 inHg

6:00 PM

Sunny

91° 💧 None 💨 8 mph H 35%29.94 inHg

7:00 PM

Sunny

87° 💧 None 💨 7 mph H 40%29.97 inHg

8:00 PM

Clear night

83° 💧 None 💨 7 mph H 45%29.97 inHg

9:00 PM

Clear night

80° 💧 None 💨 7 mph H 45%30.03 inHg

10:00 PM

Clear night

78° 💧 None 💨 6 mph H 47%30.03 inHg

11:00 PM

Clear night

76° 💧 None 💨 5 mph H 52%30.06 inHg

Tomorrow

12:00 AM

Clear night

74° 💧 None 💨 5 mph H 55%30.06 inHg

1:00 AM

Clear night

73° 💧 None 💨 5 mph H 58%30.03 inHg

2:00 AM

Clear night

72° 💧 None 💨 5 mph H 61%30.03 inHg

3:00 AM

Clear night

71° 💧 None 💨 4 mph H 66%30.06 inHg

4:00 AM

Clear night

70° 💧 None 💨 3 mph H 70%30.06 inHg

5:00 AM

Clear night

69° 💧 None 💨 2 mph H 72%30.06 inHg

6:00 AM

Clear night

68° 💧 None 💨 3 mph H 75%30.09 inHg

7:00 AM

Sunny

68° 💧 None 💨 3 mph H 77%30.09 inHg

8:00 AM

Sunny

73° 💧 None 💨 3 mph H 66%30.09 inHg

9:00 AM

Mostly sunny

78° 💧 None 💨 2 mph H 55%30.09 inHg

10:00 AM

Partly cloudy

83° 💧 None 💨 1 mph H 48%30.09 inHg

11:00 AM

Mostly cloudy

87° 💧 None 💨 2 mph H 45%30.09 inHg

12:00 PM

Mostly cloudy

90° 💧 None 💨 2 mph H 38%30.06 inHg

1:00 PM

Mostly cloudy

93° 💧 None 💨 3 mph H 32%30.06 inHg

2:00 PM

Partly cloudy

95° 💧 None 💨 3 mph H 28%30.03 inHg

3:00 PM

Partly cloudy

96° 💧 None 💨 4 mph H 26%30.00 inHg

4:00 PM

Mostly sunny

96° 💧 None 💨 5 mph H 26%30.00 inHg

5:00 PM

Mostly sunny

96° 💧 None 💨 6 mph H 27%30.00 inHg

6:00 PM

Mostly sunny

94° 💧 None 💨 7 mph H 31%30.00 inHg

7:00 PM

Mostly sunny

90° 💧 None 💨 6 mph H 38%30.00 inHg

8:00 PM

Clear night

85° 💧 None 💨 7 mph H 44%30.00 inHg

9:00 PM

Clear night

83° 💧 None 💨 6 mph H 46%30.03 inHg

10:00 PM

Clear night

82° 💧 None 💨 5 mph H 48%30.06 inHg

11:00 PM

Clear night

81° 💧 None 💨 6 mph H 51%30.06 inHg

Wednesday

12:00 AM

Clear night

79° 💧 None 💨 5 mph H 56%30.06 inHg

1:00 AM

Clear night

78° 💧 None 💨 5 mph H 60%30.06 inHg

2:00 AM

Clear night

77° 💧 None 💨 5 mph H 62%30.06 inHg

3:00 AM

Clear night

76° 💧 None 💨 5 mph H 63%30.06 inHg

4:00 AM

Clear night

76° 💧 None 💨 5 mph H 65%30.06 inHg

5:00 AM

Clear night

76° 💧 None 💨 6 mph H 65%30.09 inHg

6:00 AM

Clear night

76° 💧 None 💨 7 mph H 65%30.09 inHg

7:00 AM

Sunny

76° 💧 None 💨 7 mph H 65%30.09 inHg

8:00 AM

Sunny

80° 💧 None 💨 6 mph H 61%30.12 inHg

9:00 AM

Sunny

84° 💧 None 💨 6 mph H 55%30.09 inHg

10:00 AM

Sunny

89° 💧 None 💨 6 mph H 49%30.09 inHg

11:00 AM

Sunny

93° 💧 None 💨 8 mph H 43%30.09 inHg

12:00 PM

Mostly sunny

95° 💧 None 💨 8 mph H 38%30.09 inHg

1:00 PM

Sunny

97° 💧 None 💨 9 mph H 35%30.06 inHg

2:00 PM

Sunny

98° 💧 0.000 in 💨 9 mph H 33%30.03 inHg

3:00 PM

Mostly sunny

98° 💧 0.000 in 💨 9 mph H 32%30.00 inHg

4:00 PM

Mostly sunny

98° 💧 None 💨 9 mph H 32%29.97 inHg

5:00 PM

Sunny

97° 💧 0.000 in 💨 9 mph H 32%29.97 inHg

6:00 PM

Mostly sunny

95° 💧 None 💨 7 mph H 33%29.94 inHg

7:00 PM

Sunny

92° 💧 None 💨 5 mph H 39%29.97 inHg

10:00 PM

Clear night

85° 💧 None 💨 6 mph H 53%30.00 inHg

Thursday

1:00 AM

Mostly clear night

81° 💧 None 💨 6 mph H 62%30.00 inHg

4:00 AM

Light rain

77° 💧 None 💨 3 mph H 74%30.00 inHg

7:00 AM

Moderate rain

72° 💧 None 💨 7 mph H 98%30.06 inHg

10:00 AM

Light thunderstorms

75° 💧 None 💨 3 mph H 96%30.06 inHg

1:00 PM

Light thunderstorms

77° 💧 None 💨 1 mph H 93%30.06 inHg

4:00 PM

Moderate rain

77° 💧 None 💨 4 mph H 93%29.97 inHg

7:00 PM

Mostly cloudy

77° 💧 None 💨 3 mph H 96%29.94 inHg

10:00 PM

Mostly clear night

74° 💧 None 💨 3 mph H 99%29.97 inHg

Friday

1:00 AM

Overcast night

73° 💧 None 💨 3 mph H 100%29.97 inHg

4:00 AM

Overcast night

72° 💧 None 💨 4 mph H 100%29.94 inHg

7:00 AM

Overcast

73° 💧 None 💨 6 mph H 99%29.97 inHg

10:00 AM

Overcast

78° 💧 None 💨 2 mph H 84%29.97 inHg

1:00 PM

Overcast

84° 💧 None 💨 4 mph H 69%29.91 inHg

4:00 PM

Light rain

86° 💧 None 💨 2 mph H 61%29.85 inHg

7:00 PM

Light rain

76° 💧 None 💨 3 mph H 97%29.85 inHg

10:00 PM

Clear night

74° 💧 None 💨 1 mph H 98%29.88 inHg

Saturday

1:00 AM

Clear night

73° 💧 None 💨 5 mph H 97%29.88 inHg

4:00 AM

Clear night

73° 💧 None 💨 7 mph H 97%29.85 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 4 mph H 98%29.88 inHg

10:00 AM

Mostly sunny

81° 💧 None 💨 4 mph H 83%29.94 inHg

1:00 PM

Light rain

88° 💧 None 💨 4 mph H 63%29.94 inHg

4:00 PM

Moderate rain

76° 💧 None 💨 4 mph H 98%29.94 inHg

7:00 PM

Overcast

77° 💧 None 💨 3 mph H 98%29.91 inHg

Sunday

1:00 AM

Overcast night

75° 💧 None 💨 1 mph H 100%30.03 inHg

7:00 AM

Overcast

73° 💧 None 💨 2 mph H 100%30.06 inHg

1:00 PM

Light rain

87° 💧 None 💨 3 mph H 64%30.06 inHg

7:00 PM

Mostly sunny

84° 💧 None 💨 3 mph H 76%29.97 inHg

Monday

1:00 AM

Clear night

77° 💧 None 💨 6 mph H 85%30.03 inHg

7:00 AM

Sunny

75° 💧 None 💨 4 mph H 91%30.03 inHg

1:00 PM

Mostly sunny

90° 💧 None 💨 8 mph H 56%29.97 inHg

7:00 PM

Sunny

86° 💧 None 💨 6 mph H 64%29.88 inHg

Tuesday

1:00 AM

Clear night

80° 💧 None 💨 6 mph H 73%29.97 inHg

7:00 AM

Mostly sunny

75° 💧 None 💨 6 mph H 89%30.06 inHg

1:00 PM

Partly cloudy

86° 💧 None 💨 6 mph H 64%30.09 inHg

7:00 PM

Mostly sunny

81° 💧 None 💨 8 mph H 57%30.09 inHg

Wednesday

1:00 AM

Mostly clear night

70° 💧 None 💨 7 mph H 61%30.21 inHg

7:00 AM

Sunny

65° 💧 None 💨 8 mph H 72%30.27 inHg

1:00 PM

Mostly sunny

79° 💧 None 💨 8 mph H 44%30.27 inHg

7:00 PM

Sunny

75° 💧 None 💨 8 mph H 47%30.21 inHg

Thursday

1:00 AM

Clear night

66° 💧 None 💨 8 mph H 65%30.30 inHg

7:00 AM

Sunny

61° 💧 None 💨 7 mph H 74%30.33 inHg

1:00 PM

Sunny

78° 💧 None 💨 8 mph H 41%30.30 inHg

7:00 PM

Sunny

74° 💧 None 💨 8 mph H 40%30.24 inHg

Friday

1:00 AM

Mostly clear night

64° 💧 None 💨 7 mph H 67%30.27 inHg

7:00 AM

Mostly sunny

62° 💧 None 💨 7 mph H 78%30.27 inHg

1:00 PM

Sunny

79° 💧 None 💨 5 mph H 37%30.24 inHg

7:00 PM

Mostly sunny

75° 💧 None 💨 3 mph H 42%30.12 inHg

Saturday

1:00 AM

Partly cloudy night

66° 💧 None 💨 5 mph H 49%30.18 inHg

7:00 AM

Overcast

66° 💧 None 💨 5 mph H 55%30.18 inHg

1:00 PM

Overcast

76° 💧 None 💨 3 mph H 37%30.15 inHg

7:00 PM

Mostly sunny

73° 💧 None 💨 4 mph H 47%30.06 inHg

Sunday

1:00 AM

Partly cloudy night

64° 💧 None 💨 3 mph H 62%30.09 inHg

7:00 AM

Overcast

63° 💧 None 💨 4 mph H 67%30.06 inHg

1:00 PM

Overcast

78° 💧 None 💨 5 mph H 36%30.03 inHg

7:00 PM

Overcast

75° 💧 None 💨 1 mph H 51%29.94 inHg

Monday

1:00 AM

Overcast night

67° 💧 None 💨 6 mph H 78%30.00 inHg

7:00 AM

Light rain

64° 💧 None 💨 5 mph H 97%30.00 inHg

1:00 PM

Light rain

69° 💧 None 💨 4 mph H 92%30.00 inHg

7:00 PM

Overcast

67° 💧 None 💨 4 mph H 97%29.94 inHg

In Alton and, more broadly, across the state of Missouri: Tonight, the sky will remain mostly sunny with just a few clouds drifting by. Temperatures will stay hot, ranging from around 89 to 92 degrees Fahrenheit. Winds will be moderate out of the east at up to 12 mph, with gusts reaching 28 mph. No rain is expected during the evening hours, so conditions will be dry. Humidity levels are likely to stay relatively steady, maintaining the warm and somewhat breezy environment. As the night progresses, temperatures will gradually ease, but it will still feel warm and humid. Expect the wind to continue being a bit gusty at times, providing some relief from the heat. Overall, it’s a warm, dry evening with comfortable breezes.

15-Day Weather Outlook for Alton

TomorrowTomorrow

Sunny 95°/65° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Sunny 98°/74° 💧 0.077 in 💨 7 mph

Thursday, Sep 10Thu Sep 10

Moderate rain 91°/73° 💧 0.325 in 💨 10 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 87°/69° 💧 0.079 in 💨 7 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 86°/74° 💧 0.181 in 💨 7 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 93°/77° 💧 0.001 in 💨 4 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 95°/78° 💧 0.007 in 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 97°/78° 💧 0.003 in 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 98°/74° 💧 0.023 in 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 94°/74° 💧 0.016 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 95°/72° 💧 0.037 in 💨 8 mph

Saturday, Sep 19Sat Sep 19

Sunny 85°/57° 💧 0.001 in 💨 13 mph

Sunday, Sep 20Sun Sep 20

Sunny 70°/53° 💧 None 💨 11 mph

Monday, Sep 21Mon Sep 21

Sunny 70°/52° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Alton

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Alton

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 7,0µg/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 8,0µg/m³

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

O₃ Ozone Good 50,3µg/m³

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

NO₂ Nitrogen dioxide Good 1,7µg/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 Alton

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 8,7Very high 😊Good

Tomorrow UV 8,2Very high 😐Moderate

Wednesday UV 8,4Very high 🙂Fair

Thursday UV 2,8Low 🙂Fair

Friday UV 8,0Very high 😊Good

Saturday UV 9,0Very high —Unavailable

Sunday UV 8,0Very high —Unavailable

Hourly UV index today

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

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.

Comfortable temperature conditions

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

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 Alton

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ALTON, MISSOURI

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 9:00 AM–10:00 AM.

97/100Best-hour score

BEST TIME TONIGHT 9:00 AM–10:00 AM Astronomical darkness: 8:55 PM–5:12 AM

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

☾ Moonlight 19% Waning Crescent · Moon about 70° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 46° 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 min69%

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.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Alton were last refreshed today at 4:13 AM. The current forecast period extends through 09/09/2026 at 3:00 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.