St. Charles, MO

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St. Charles, MO Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

12:55 AM

80°F
RealFeel® 83°
Air Quality Fair
Wind SSW 2 mph
Wind Gusts 5 mph
Clear More Details

Current Air Quality

Today

7/1

24
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
Moderate
The risk of tree pollen symptoms is moderate.
Ragweed Pollen
Low
The risk for ragweed pollen symptoms is low.
Mold
High
The risk of mold allergy symptoms is high. Remove your shoes as soon as you return inside.
Grass Pollen
High
The risk of grass pollen symptoms is high. Limit your time outdoors in the early morning and mid-afternoon hours.
Dust & Dander
High
The risk of dust and dander allergy symptoms is high. Be sure you're vacuuming with a HEPA-approved filter.
Arthritis
Low
The risk of experiencing weather-related arthritis pain is low.
Sinus Pressure
High
The risk of weather-related sinus pressure is high. Taking a hot shower may help ease sinus pressure.
Common Cold
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Moderate
The risk of suffering from a weather-related migraine is moderate.
Asthma
High
The risk of asthma symptoms is high. Be sure to use HEPA filters in your home to cut down on indoor asthma triggers.
Fishing
Good
Fishing conditions are good. Fishing in the early morning or dusk hours can help you get a catch.
Running
Good
Conditions for running are good. Be sure to wear sunscreen and UV-protective activewear.
Golf
Good
Conditions for golfing are good. Wear sunscreen while out on the course.
Biking & Cycling
Good
Conditions for cycling are good. Stay hydrated to make the most of your ride.
Beach & Pool
Poor
Conditions for a day at the beach or pool are poor. Stay out of the water if there is a chance of lightning. Only swim in water temperatures below 55 degrees if you have the proper gear.
Stargazing
Great
Conditions for stargazing are great. Invest in a red flashlight. It can help prevent additional light pollution.
Hiking
Good
Conditions for hiking are good. Stay hydrated and bring enough water to last the entire hike.
Lawn Mowing
Good
Conditions for lawn mowing are good. Alternating mowing patterns can help all areas of your lawn grow.
Composting
Good
Composting conditions are good. Make sure you frequently add water to your compost to keep it moist.
Outdoor Entertaining
Great
Conditions for outdoor entertaining will be great. Pay attention to the mosquito or pest forecast and prepare deterrents.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Fair
Conditions for driving are fair. Keep up with your car maintenance, such as inspecting your windshield wipers and checking your tire treads.
Mosquitos
Extremely High
The risk for mosquito activity are extremely high. Wear long-sleeved shirts and pants when spending time outdoors to prevent bites.
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
Extremely High
The risk for pest activity is extremely high. Eliminate standing water in rain gutters, buckets, and in tires where pests can breed.
See all

TODAY’S WEATHER FORECAST

7/1
96°Hi
RealFeel® 104°
A t-storm around in the p.m.

TONIGHT’S WEATHER FORECAST

7/1
72°Lo
RealFeel® 69°
Partly cloudy with a t-storm

TOMORROW’S WEATHER FORECAST

7/2
86°/ 71°
RealFeel® 89°
A shower and thunderstorm

Looking Ahead

Thunderstorms in the area this afternoon through tomorrow afternoon

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