Today | Weather | Wednesday, March 18, 2026

Weather in Lenexa, Kansas

02:06 AM
Now
Cloudy Weather
36° F
Feels Like 27°
Precipitation 25 %
Wind 9 mph
Humidity 87 %
Today
Cloudy Weather
Day 68°
Night 48°
Precipitation 2 %
Wind 6 mph
UV Index (0 - 11+) 5

Lenexa Weather Forecast Updated

23 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)

Day

73°

Night

61°

Air Quality in Lenexa

NOW
54 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.59 µg/m³
PM10 4.55 µg/m³
O3 0.055 ppm
NO2 1.4 ppb
SO2 0.3 ppb
CO 0.14 ppm
NH3 4.16 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.53.59 µg/m³
PM104.55 µg/m³
O3108.22 µg/m³
NO22.55 µg/m³
SO20.87 µg/m³
CO161.28 µg/m³
NH34.16 µg/m³
NO0 µg/m³