Today | Weather | Thursday, May 21, 2026

Weather in Olathe, Kansas

10:19 AM
Now
Rainy Weather
57° F
Feels Like 54°
Precipitation 47 %
Wind 8 mph
UV Index (0 - 11+) 1
Humidity 87 %
Today
Rainy Weather
Day 63°
Night 57°
Precipitation 84 %
Wind 8 mph
UV Index (0 - 11+) 3

Olathe Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Cloudy Weather

Day

73°

Night

52°

Wind

9 mph

UV Index

11

Precipitation

25 %

Air Quality in Olathe

NOW
16 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.18 µg/m³
PM10 1.25 µg/m³
O3 0.017 ppm
NO2 1 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 1 µg/m³
NO 0.3 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)
PM2.51.18 µg/m³
PM101.25 µg/m³
O334.31 µg/m³
NO21.94 µg/m³
SO20.28 µg/m³
CO122.26 µg/m³
NH31 µg/m³
NO0.3 µg/m³