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St. Charles, MO

46°F
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St. Charles, MO Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

8:56 AM

46°F
RealFeel® 48°
RealFeel Shade™ 48°
Air Quality Fair
Wind SSW 4 mph
Wind Gusts 8 mph
Mostly sunny More Details

Current Air Quality

Today

12/7

44
AQI

Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Based on Current Pollutants

More Details

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Current Air Quality

Our current air quality index (AQI) provides information on the quality of air that you are breathing and its impact on your health. There are at least six different pollutants that we track that impact the cleanliness of air and your health.

Health & Activities
See all
Tree Pollen
Low
The risk of tree pollen symptoms is low.
Ragweed Pollen
Low
The risk for ragweed pollen symptoms is low.
Mold
Low
The risk of mold allergy symptoms is low.
Grass Pollen
Low
The risk of grass pollen symptoms is low.
Dust & Dander
High
The risk of dust and dander allergy symptoms is high. Be sure you're vacuuming with a HEPA-approved filter.
Arthritis
High
The risk of experiencing weather-related arthritis pain is high. Focus on low-impact aerobic exercises.
Sinus Pressure
Moderate
The risk of weather-related sinus pressure is moderate. Make sure you stay hydrated.
Common Cold
Moderate
The risk of catching a cold is moderate.
Flu
Low
The risk of catching the flu is low.
Migraine
Low
The risk of suffering from a weather-related migraine is low.
Asthma
Low
The risk of asthma symptoms is low.
Fishing
Poor
Fishing conditions are poor.
Running
Ideal
Conditions for running are ideal.
Golf
Great
Conditions for golfing are great. Stay hydrated when spending time in the sun.
Biking & Cycling
Great
Conditions for cycling are great. Be sure you have the correct gear to keep your core temperature warm during winter months and cool during hot weather.
Beach & Pool
Fair
Conditions for a day at the beach or pool are fair. Temperatures tend to be highest in the mid-afternoon if the day is on the cooler side.
Stargazing
Good
Conditions for stargazing are good. Be sure to move away from city lights or turn off nearby lights, including indoor and outdoor lights.
Hiking
Great
Conditions for hiking are great. Wear sunscreen and UV-protective clothing.
Lawn Mowing
Poor
Conditions for lawn mowing are poor. Avoid mowing your lawn when it is wet, or temperatures are too cold.
Composting
Poor
Composting conditions are poor. Keep your compost area covered.
Outdoor Entertaining
Good
Conditions for outdoor entertaining will be good. Make sure you have shade available, so guests do not overheat.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Ideal
Conditions for driving are ideal.
Mosquitos
Low
The risk for mosquito activity are low.
Indoor Pests
High
The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects near your home.
Outdoor Pests
High
The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects.
See all

TODAY’S WEATHER FORECAST

12/7
65°Hi
RealFeel® 64°
Sunny and warmer

TONIGHT’S WEATHER FORECAST

12/7
48°Lo
RealFeel® 40°
Partly cloudy; breezy, mild

TOMORROW’S WEATHER FORECAST

12/8
63°/ 45°
RealFeel® 58°
Some sun, then clouds; breezy

Looking Ahead

Rain and thunderstorms tomorrow evening through Saturday morning

St. Charles Weather Radar

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World North America United States Missouri St. Charles

Weather Near St. Charles:

  • O'Fallon, MO
  • Springfield, IL
  • St. Louis, MO
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