Alton, Illinois | Local and National Hourly Weather Forecasts | WeatherBug
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  • Sunday
    Forecast hour icon
    10am
    Mostly Cloudy
    71°
    Precip 0%
    10am Sun
    71°
    Feels like 71°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      74%
    • Wind
      S 19
    • Dew Point
      62°
  • Forecast hour icon
    11am
    Mostly Cloudy
    73°
    Precip 0%
    11am Sun
    73°
    Feels like 73°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      69%
    • Wind
      S 20
    • Dew Point
      63°
  • Forecast hour icon
    12pm
    Partly Cloudy
    75°
    Precip 10%
    12pm Sun
    75°
    Feels like 75°
    Current forecast icon
    Partly Cloudy
    • Humidity
      67%
    • Wind
      S 20
    • Dew Point
      63°
  • Forecast hour icon
    1pm
    Mostly Cloudy
    75°
    Precip 10%
    1pm Sun
    75°
    Feels like 75°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      67%
    • Wind
      S 20
    • Dew Point
      64°
  • Forecast hour icon
    2pm
    Windy
    75°
    Precip 20%
    2pm Sun
    75°
    Feels like 75°
    Current forecast icon
    Windy
    • Humidity
      69%
    • Wind
      S 20
    • Dew Point
      64°
  • Forecast hour icon
    3pm
    Mostly Cloudy
    75°
    Precip 10%
    3pm Sun
    75°
    Feels like 75°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      69%
    • Wind
      S 19
    • Dew Point
      64°
  • Forecast hour icon
    4pm
    Partly Cloudy
    75°
    Precip 10%
    4pm Sun
    75°
    Feels like 75°
    Current forecast icon
    Partly Cloudy
    • Humidity
      69%
    • Wind
      S 18
    • Dew Point
      64°
  • Forecast hour icon
    5pm
    Mostly Cloudy
    74°
    Precip 20%
    5pm Sun
    74°
    Feels like 74°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      71%
    • Wind
      S 17
    • Dew Point
      64°
  • Forecast hour icon
    6pm
    Partly Cloudy
    74°
    Precip 20%
    6pm Sun
    74°
    Feels like 74°
    Current forecast icon
    Partly Cloudy
    • Humidity
      73%
    • Wind
      S 15
    • Dew Point
      64°
  • Forecast hour icon
    7pm
    Partly Cloudy
    72°
    Precip 20%
    7pm Sun
    72°
    Feels like 72°
    Current forecast icon
    Partly Cloudy
    • Humidity
      75%
    • Wind
      S 14
    • Dew Point
      64°
  • 7:51p
    Forecast hour icon
    8pm
    Mostly Cloudy
    72°
    Precip 20%
    8pm Sun
    72°
    Feels like 72°
    Current forecast icon
    Mostly Cloudy
    • Humidity
      77%
    • Wind
      S 13
    • Dew Point
      64°
  • Forecast hour icon
    9pm
    30% Chance of Light Rain
    71°
    Precip 30%
    9pm Sun
    71°
    Feels like 71°
    Current forecast icon
    30% Chance of Light Rain
    • Humidity
      79%
    • Wind
      S 13
    • Dew Point
      64°