St. Louis, MO

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St. Louis, MO Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

6:00 AM

65°F
RealFeel® 58°
RealFeel Shade™ 58°
Air Quality Fair
Wind SSW 5 mph
Wind Gusts 12 mph
Thunderstorm More Details

MINUTECAST®

Heavy rain and a thunderstorm for at least 60 min

Current Air Quality

Today

5/18

26
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

Learn more at Plumb Labs Logo

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
High
The risk of tree pollen symptoms is high. Keep your windows closed and change clothing after returning to the indoors.
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
Low
The risk of grass pollen symptoms is low.
Dust & Dander
Moderate
The risk of dust and dander allergy symptoms is moderate. Closing your windows on windy days can help prevent outside dust or dander from getting into your home.
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
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Low
The risk of suffering from a weather-related migraine is low.
Asthma
Very High
The risk of asthma is very high. Use a humidifier to prevent dry air in your home.
Fishing
Poor
Fishing conditions are poor.
Running
Fair
Conditions for running are fair. Stay hydrated to make your run easier.
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
Great
Conditions for a day at the beach or pool are great. Remember to stay hydrated.
Stargazing
Poor
Conditions for stargazing are poor.
Hiking
Good
Conditions for hiking are good. Stay hydrated and bring enough water to last the entire hike.
Lawn Mowing
Fair
Conditions for lawn mowing are fair. Be sure only to cut off 1/3 of the total height of your grass when mowing.
Composting
Fair
Composting conditions are fair. All materials you add should be shredded or broken into smaller pieces.
Outdoor Entertaining
Good
Conditions for outdoor entertaining will be good. Make sure you have shade available, so guests do not overheat.
Air Travel
Great
Conditions for flying are great. 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
Moderate
The risk for mosquito activity are moderate. Eliminate any standing water on your property where mosquitoes can breed.
Indoor Pests
Moderate
The risk for pest activity is moderate. Do not leave food unattended and clear counters of crumbs.
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

5/18
84°Hi
RealFeel® 87°
Rain and a thunderstorm

TONIGHT’S WEATHER FORECAST

5/18
64°Lo
RealFeel® 66°
A thunderstorm in spots

TOMORROW’S WEATHER FORECAST

5/19
87°/ 75°
RealFeel® 92°
A t-storm around in the p.m.

Looking Ahead

Thunderstorms, some strong, Friday evening through Saturday afternoon; storms can be severe

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  • O'Fallon, MO ;
  • Springfield, IL ;
  • St. Charles, MO
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