St. Louis Weather Forecast
St. Louis weather: 71°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for St. Louis
Derived from the current forecast window - not an official warning.
12 dry days, 8 days above 90°F and humidity at 87%. Hot, dry and windy together is what drives fire spread.
Light haze overhead right now. Aerosol readings cannot separate wildfire smoke from dust, so treat this as a haze signal, not a fire confirmation.
Air quality and pollen in St. Louis
Air quality: Open-Meteo (CAMS). US AQI scale.
Health and safety today
| Skin and UV | No protection needed for most skin types. |
|---|---|
| General | Conditions are comfortable for most people, including children and older adults, with normal clothing. |
Active alerts for St. Louis
Derived from the forecast. No official alert feed is wired for this country yet.
See the St. Louis forecast by time range
St. Louis weather - more answers
Explore St. Louis
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is St. Louis?
St. Louis is a city in Missouri. Its coordinates are 38.627, -90.1994. It lies in North America.
What is the weather like in St. Louis right now?
It is currently 71°F (22°C) with clear. Humidity is 87% and wind is 6 mph.
When is the best time to visit St. Louis?
August, September and October offer the most comfortable conditions in St. Louis, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is St. Louis in?
St. Louis observes America/Chicago (UTC-05:00). The local time is 2:21 AM.
How many people live in St. Louis?
St. Louis has a population of approximately 290.000.
What is the nearest airport to St. Louis?
The closest airports are Nashville International Airport (BNA), 259 mi away and O'Hare International Airport (ORD), 261 mi away.
What are the top things to do in St. Louis?
Popular options include Gateway Arch National Park, Starved Rock State Park and Mammoth Cave National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 2:21 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
