Today | Weather | Tuesday, August 26, 2025

Weather in St. Louis, Missouri

06:06 AM
Now
Cloudy NightCloudy night, overcast skies at night with no rain.
54° F
Feels Like 52°
Precipitation 0 %
Wind 5 mph
Humidity 83 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 79°
Night 50°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Other:

Delightful with plenty of bright sunlight.

St. Louis Weather Forecast Updated

19 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 26, 2024)

Hot DayHot and sunny weather, with high temperatures and strong sunshine.

Day

99°

Night

70°

Wind

8 mph

UV Index

8

Precipitation

2

Air quality in St. Louis

NOW
53 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 11.47 µg/m³
PM10 11.63 µg/m³
O₃ 15.93 ppb
NO₂ 11.89 ppb
SO₂ 0.77 ppb
CO 247.26 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.