Now · 11:49 AM
Weldon Spring, MO Weather Forecast – Hourly & 15-Day
United States · Missouri
Hourly Forecast for Weldon Spring
In Weldon Spring and, more broadly, across the state of Missouri: This morning will start with mostly cloudy skies and mild temperatures around 67 degrees. Winds will be light from the northeast at up to 9 mph, with occasional gusts reaching 18 mph. As the day progresses, temperatures are expected to warm into the low 80s, reaching around 83. Rain may develop, with some areas experiencing about 0.08 inches of accumulation. The highest chance of rain is about 85%, so keep an umbrella handy if you're heading outdoors. Winds will remain light during the afternoon, continuing from the northeast at similar speeds. Overall, it looks like a warm, mostly cloudy day with a good likelihood of some rain, especially later in the day.
15-Day Weather Outlook for Weldon Spring
TEMPERATURE OUTLOOK
Temperature & Weather Trends in Weldon Spring
AIR QUALITY FORECAST
Air Quality Forecast for Weldon Spring
PM2.5 PM2.5 Good 7,7µg/m³
Air quality is favorable for outdoor activities.
PM10 PM10 Good 8,2µg/m³
Air quality is favorable for outdoor activities.
O₃ O₃ Fair 61,8µg/m³
Air quality is acceptable for most people.
NO₂ NO₂ Good 1,2µg/m³
Air quality is favorable for outdoor activities.
Air quality is acceptable for most people.
PM2.5 PM2.5 Good 8,4µg/m³
Air quality is favorable for outdoor activities.
PM10 PM10 Good 9,1µg/m³
Air quality is favorable for outdoor activities.
O₃ O₃ Good 49,9µg/m³
Air quality is favorable for outdoor activities.
NO₂ NO₂ Good 2,5µg/m³
Air quality is favorable for outdoor activities.
Air quality is favorable for outdoor activities.
PM2.5 PM2.5 Fair 15,6µg/m³
Air quality is acceptable for most people.
PM10 PM10 Good 16,5µg/m³
Air quality is favorable for outdoor activities.
O₃ O₃ Fair 79,5µg/m³
Air quality is acceptable for most people.
NO₂ NO₂ Good 1,2µg/m³
Air quality is favorable for outdoor activities.
Air quality is acceptable for most people.
PM2.5 PM2.5 Fair 12,0µg/m³
Air quality is acceptable for most people.
PM10 PM10 Good 12,7µg/m³
Air quality is favorable for outdoor activities.
O₃ O₃ Fair 66,1µg/m³
Air quality is acceptable for most people.
NO₂ NO₂ Good 1,7µg/m³
Air quality is favorable for outdoor activities.
Air quality is acceptable for most people.
PM2.5 PM2.5 Fair 12,0µg/m³
Air quality is acceptable for most people.
PM10 PM10 Good 12,9µg/m³
Air quality is favorable for outdoor activities.
O₃ O₃ Fair 72,9µg/m³
Air quality is acceptable for most people.
NO₂ NO₂ Good 1,7µg/m³
Air quality is favorable for outdoor activities.
Air quality is acceptable for most people.
HEALTH & EXPOSURE
UV, Sun & Health Outlook in Weldon Spring
Today's weather health advice
Open today's recommendations.
Moderate UV risk
Sunglasses and sun protection are recommended for prolonged exposure.
Acceptable air quality
Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.
Comfortable temperature conditions
Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.
Good conditions for outdoor activities
Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.
WIND OUTLOOK
Hourly Wind Forecast for Weldon Spring
The technical data used to calculate this forecast for Weldon Spring were updated today at 11:49 AM. The displayed forecasts cover the period through 27/09/2026 at 9:00 AM. Weather and air-quality data provided by WEATHER-INFO.COM. UV-index data derived from ECMWF UVB by WEATHER PORTAL. Weather information is generated automatically and periodically reviewed by our technical team.
Tonight's Stargazing & Shooting Stars
Fair observing conditions. Best local viewing window: 1:00 AM–2:00 AM.
Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.