Today | Weather | Wednesday, March 18, 2026

Weather in Olathe, Kansas

12:17 AM
Now
Rainy Weather
36° F
Feels Like 27°
Precipitation 41 %
Wind 8 mph
Humidity 72 %
Today
Cloudy Weather
Day 68°
Night 48°
Precipitation 2 %
Wind 6 mph
UV Index (0 - 11+) 5

Olathe Weather Forecast Updated

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

Day

73°

Night

46°

Wind

20 mph

UV Index

4

Precipitation

0 %

Air Quality in Olathe

NOW
53 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.49 µg/m³
PM10 5.59 µg/m³
O3 0.055 ppm
NO2 1.6 ppb
SO2 0.5 ppb
CO 0.14 ppm
NH3 4.06 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)
PM2.54.49 µg/m³
PM105.59 µg/m³
O3107.95 µg/m³
NO22.94 µg/m³
SO21.2 µg/m³
CO163.53 µg/m³
NH34.06 µg/m³
NO0 µg/m³