New York, NY 76° Los Angeles, CA 91° Chicago, IL 79° 🌤️ Houston, TX 🌤️ Miami, FL 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO 🌤️ Toronto, ON 🌤️ Vancouver, BC
WeatherLive › Illinois › St. Charles

St. Charles, IL Weather (60174)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSt. Charles · 9:37 PM CDT
87° | 62°
72°F
Feels like 73°
Mostly cloudy
WindSW 10 mph · Gusts 26 mph
Precip71% · 0.16 in
Humidity89% · Dew point 69°
UV index8 High
Air Quality28 Good
Pressure29.91 inHg
Visibility6 mi
Sunrise / Sunset6:04 AM · 7:49 PM · 13h 45m

Weather map — St. Charles

Full radar →
Now
72°
30%
10 mph
22:00
71°
0.06 in
9 mph
23:00
71°
0.11 in
7 mph
00:00
71°
0.11 in
7 mph
01:00
69°
0.11 in
6 mph
02:00
68°
0.11 in
7 mph
03:00
66°
0.11 in
5 mph
04:00
65°
0.11 in
6 mph
05:00
64°
0.11 in
5 mph
06:00
63°
0.11 in
3 mph
07:00
64°
0.11 in
2 mph
08:00
67°
0.11 in
2 mph
09:00
70°
0.11 in
2 mph
10:00
73°
0.11 in
3 mph
11:00
76°
0.11 in
4 mph
12:00
73°
35%
4 mph
13:00
75°
25%
4 mph
14:00
77°
24%
5 mph
15:00
78°
17%
6 mph
16:00
77°
10%
7 mph
17:00
76°
16%
6 mph
18:00
75°
20%
6 mph
19:00
73°
16%
6 mph
20:00
69°
21%
5 mph

Today · Tue 8/18

High 87°
71% / 0.16 in

Sunny. Winds SW at 14 mph.

Tonight · Tue 8/18

Low 63°
78% / 0.06 in

Light rain. Winds SW at 9 mph.

Tomorrow · Wed 8/19

78° | 63°
86% / 1.30 in

Showers. Winds W at 7 mph.

7-day trend

St. Charles · temperature + precipitation

10-day forecast

Updated 9:37 PM

Details & indices

Wind
10 mph SW
Gusts 26 mph
Humidity
89%
Dew point 69°
Pressure
29.91 inHg
Rising
UV index
8 — High
High today
Air Quality
Good
AQI 28 · US EPA
Allergy
Low
Mugwort
Visibility
6 mi
Reduced
Allergy — St. Charles

🌿 Conditions right now

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

Sun & moon

Sunrise6:04 AM
Sunset7:49 PM
Length of day13h 45m
Moonrise12:45 PM
Moonset10:25 PM
Moon phase🌓 First Quarter · 40%
Next full moonAug 27 Sturgeon Moon
Latitude41.9142°N
Longitude-88.3087°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
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Chicago
Partly cloudy
79° 🌤️
Aurora
—
— 🌤️
Rockford
—
— 🌤️
Joliet
—
— 🌤️
Naperville
—
—
Data sources · Tuesday, August 18
Where the St. Charles forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.9142°N, -88.3087°.
NBM + global weather models
Updated: 9:37 PM
Weather in St. Charles
St. Charles's outlook: warmest day near 87° (Tuesday), coldest night about 60° (Friday). Roughly 2.4 in of rain falls over the period, with Wednesday the most likely wet day (86%). Wind is the one to watch: gusts to 26 mph around Tuesday. No watches or warnings are active for the area right now. Right now St. Charles is about 11° cooler than nearby Chicago. Longer view: variable mid-latitude weather in every season.
St. Charles, IL · Elev 732 ft · 41.91°N, 88.31°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: 9:37 PM