Support Time.now: Join our Premium Plan for an ad-free experience! Support Us: Go Premium Ad-Free!

Weather in Alton, United States 🇺🇸

Current Weather in Alton

Light rain
22°C
Feels like 24°C. Light rain.
🌬️ 10 km/h NNE
💧 88% Humidity
🧭 1015 hPa
👁️ 2.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 20°C
🌅 Sunrise: 06:19 AM
🌇 Sunset: 07:49 PM
Map Overlays:

As of now, Alton is 22°C and light rain, feeling like 24°C. The air is at 88% humidity and winds are about 10 km/h, and the UV index is 0 (low). In the days ahead, expect temperatures in Alton from about 18°C to 30°C.

Hourly Forecast for Alton

02:00
Moderate rain
21°
89%
03:00
Moderate rain
22°
91%
04:00
Moderate rain at times
21°
88%
05:00
Patchy rain nearby
20°
89%
06:00
Patchy rain nearby
20°
89%
07:00
Moderate rain at times
20°
89%
08:00
Moderate rain at times
21°
83%
09:00
Moderate rain
22°
88%
10:00
Moderate rain
22°
84%
11:00
Moderate rain
23°
85%
12:00
Moderate rain
24°
83%
13:00
Moderate rain at times
26°
66%
14:00
Moderate rain at times
27°
71%
15:00
Moderate rain at times
28°
69%
16:00
Sunny
27°
3%
17:00
Sunny
27°
4%
18:00
Sunny
26°
6%
19:00
Sunny
25°
8%
20:00
Clear
23°
10%
21:00
Clear
22°
10%
22:00
Clear
21°
10%
23:00
Clear
20°
11%
00:00
Clear
19°
12%
01:00
Clear
19°
13%

14-Day Forecast for Alton

Thu, Aug 20
Sunny Sunny
28° / 20°
Fri, Aug 21
Sunny Sunny
30° / 18°
Sat, Aug 22
Sunny Sunny
29° / 21°
Sun, Aug 23
Overcast Overcast
30° / 20°
Mon, Aug 24
Patchy rain nearby Patchy rain nearby
26° / 19°
Tue, Aug 25
Mist Mist
29° / 22°
Wed, Aug 26
Sunny Sunny
24° / 15°
Thu, Aug 27
Sunny Sunny
21° / 12°
Fri, Aug 28
Sunny Sunny
25° / 12°
Sat, Aug 29
Overcast Overcast
27° / 15°
Sun, Aug 30
Overcast Overcast
23° / 19°
Mon, Aug 31
Sunny Sunny
32° / 21°
Tue, Sep 01
Overcast Overcast
32° / 22°
Wed, Sep 02
Sunny Sunny
31° / 21°

Additional Forecasts for Alton

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 159.0 μg/m³
O₃ (Ozone) 43.0 μg/m³
NO₂ (Nitrogen Dioxide) 18.3 μg/m³
SO₂ (Sulphur Dioxide) 1.4 μg/m³
PM2.5 (Fine particles) 5.6 μg/m³
PM10 (Coarse particles) 6.1 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

Browse Weather in United States by cities in alphabetical order:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Weather in United States ›

Best Time to Be Outside in Alton Today

The most comfortable window in Alton today looks like 17:00 to 20:00, when it is around 26°C. It should stay dry through that window. The next likely rain is around 02:00.

Frequently Asked Questions about Weather in Alton

What is the temperature in Alton right now?

It is currently 22°C (72°F) in Alton, light rain (feels like 24°C).

What's the weather like in Alton right now?

Conditions in Alton right now: Light rain, humidity 88%, wind 10 km/h NNE.

What is today's forecast for Alton?

Today in Alton: high 28°C, low 20°C, sunny. Chance of rain: 82%.

What is the 7-day weather forecast for Alton?

Daily highs and lows for Alton:

  • 2026-08-20: 28°C / 20°C
  • 2026-08-21: 30°C / 18°C
  • 2026-08-22: 29°C / 21°C
  • 2026-08-23: 30°C / 20°C
  • 2026-08-24: 26°C / 19°C
  • 2026-08-25: 29°C / 22°C
  • 2026-08-26: 24°C / 15°C
Is it going to rain in Alton today?

There is a 82% chance of rain in Alton today. Total expected precipitation: 61.94 mm.

What is the wind speed in Alton right now?

Wind in Alton is currently 10 km/h (6 mph) from the NNE.

What is the UV index in Alton right now?

The UV index in Alton is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇺🇸 United States: New York City · Los Angeles · Brooklyn · Chicago · Houston · Queens · Phoenix · Philadelphia · Manhattan · San Antonio · San Diego · The Bronx · Dallas · Jacksonville · Austin · Fort Worth · Columbus · Indianapolis · Charlotte · San Francisco · Seattle · Denver · Washington, D.C. · Washington · Nashville · El Paso · Oklahoma City · Detroit · Boston · Portland · New South Memphis · Memphis · Las Vegas · Milwaukee · Baltimore · South Boston · Albuquerque · Tucson · Fresno · Sacramento · Omaha · Kansas City · Long Beach · Mesa · Staten Island · Atlanta · Colorado Springs · Virginia Beach · Raleigh · Miami