Today | Weather | Friday, September 18, 2026

Weather in Lee's Summit, Missouri

07:44 PM
Now
Cloudy Night
84° F
Feels Like 86°
Precipitation 0 %
Wind 7 mph
Humidity 53 %
Today
Cloudy Weather
Day 97°
Night 75°
Precipitation 6 %
Wind 8 mph
UV Index (0 - 11+) 6

Lee's Summit Weather Forecast Updated

57 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Cloudy Night

Day

79°

Night

63°

Wind

6 mph

Precipitation

25 %

Air Quality in Lee's Summit

NOW
43 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.64 µg/m³
PM10 4.95 µg/m³
O3 0.047 ppm
NO2 1.2 ppb
SO2 0.3 ppb
CO 0.11 ppm
NH3 0.96 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.54.64 µg/m³
PM104.95 µg/m³
O392.11 µg/m³
NO22.19 µg/m³
SO20.82 µg/m³
CO126.96 µg/m³
NH30.96 µg/m³
NO0 µg/m³