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WeatherLive › Illinois › Alton

Alton, IL Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherAlton · 11:22 AM CST
43° | 33°
38°F
Feels like 31°
Partly cloudy
WindNW 11 mph · Gusts 20 mph
Precip7% · –
Humidity64% · Dew point 27°
UV index3 Low
Air Quality31 Good
Pressure30.12 inHg
Visibility6 mi
Sunrise / Sunset6:41 AM · 4:48 PM · 10h 7m

Weather map — Alton

Full radar →
Now
42°
7%
12 mph
12:00
43°
10%
12 mph
13:00
43°
10%
12 mph
14:00
43°
10%
12 mph
15:00
43°
10%
11 mph
16:00
42°
7%
10 mph
17:00
41°
7%
7 mph
18:00
40°
8%
6 mph
19:00
39°
8%
6 mph
20:00
38°
8%
6 mph
21:00
38°
8%
6 mph
22:00
37°
7%
6 mph
23:00
35°
7%
6 mph
00:00
34°
7%
6 mph
01:00
34°
7%
6 mph
02:00
33°
8%
6 mph
03:00
32°
8%
6 mph
04:00
31°
9%
6 mph
05:00
31°
9%
5 mph
06:00
30°
10%
5 mph
07:00
32°
9%
4 mph
08:00
35°
6%
4 mph
09:00
38°
4%
4 mph
10:00
40°
3%
4 mph

Today · Fri 11/13

High 43°
7% / –

Partly cloudy. Winds N at 12 mph.

Tonight · Fri 11/13

Low 30°
8% / –

Partly cloudy. Winds N at 6 mph.

Tomorrow · Sat 11/14

47° | 30°
4% / –

Sunny. Winds N at 6 mph.

7-day trend

Alton · temperature + precipitation

10-day forecast

Updated 11:22 AM

Details & indices

Wind
11 mph NW
Gusts 20 mph
Humidity
64%
Dew point 27°
Pressure
30.12 inHg
Rising
UV index
3 — Low
High today
Air Quality
Good
AQI 31 · US EPA
Allergy
Low
Ragweed
Visibility
6 mi
Clear view
Allergy — Alton

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
Low

Sun & moon

Sunrise6:41 AM
Sunset4:48 PM
Length of day10h 7m
Moonrise10:50 AM
Moonset7:59 PM
Moon phase🌒 Waxing Crescent · 17%
Next full moonNov 24 Beaver Moon
Latitude38.8906°N
Longitude-90.1843°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Fair
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Great
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in Illinois
Chicago
Heavy rain
40° 🌤️
Aurora
—
—
Rockford
Sunny
35°
Joliet
Partly cloudy
39° 🌤️
Naperville
—
—
NBM + global weather models
Updated: 11:22 AM
Alton, IL · Elev 492 ft · 38.89°N, 90.18°W · Illinois · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 11:22 AM