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St. Louis, MO

46°F
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St. Louis, MO Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

12:34 PM

46°F
RealFeel® 43°
RealFeel Shade™ 40°
Air Quality Fair
Wind S 7 mph
Wind Gusts 14 mph
Cloudy More Details

MINUTECAST®

No precipitation for at least 60 min

12:34 PM
1:34 PM

Current Air Quality

Today

3/21

22
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
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
Moderate
The risk of experiencing weather-related arthritis pain is moderate. Stay hydrated and stretch to help avoid arthritis symptoms.
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
Moderate
The risk of asthma symptoms is moderate.
Fishing
Poor
Fishing conditions are poor.
Running
Poor
Conditions for running are poor. Lightening and extremely cold temperatures are unsafe for outdoor runners.
Golf
Poor
Conditions for golfing are poor. Do not play if there is a chance of lightning.
Biking & Cycling
Poor
Conditions for cycling are poor. Avoid outdoor activity if there is a chance of lightning or in extremely cold temperatures.
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
Poor
Conditions for stargazing are poor.
Hiking
Poor
Conditions for hiking are poor.
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
Poor
Conditions for outdoor entertaining will be poor. Consider moving your party indoors or under some form of cover.
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
Low
The risk for mosquito activity are low.
Indoor Pests
Moderate
The risk for pest activity is moderate. Do not leave food unattended and clear counters of crumbs.
Outdoor Pests
Low
The risk for pest activity is low.
See all

TODAY’S WEATHER FORECAST

3/21
48°Hi
RealFeel® 43°
Cooler; rain this afternoon

TONIGHT’S WEATHER FORECAST

3/21
40°Lo
RealFeel® 28°
Cloudy with a few showers

TOMORROW’S WEATHER FORECAST

3/22
63°/ 60°
RealFeel® 58°
Milder with showers around

Looking Ahead

Thunderstorms, some heavy, Thursday afternoon

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World North America United States Missouri St. Louis

Weather Near St. Louis:

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