Today | Weather | Thursday, May 21, 2026

Weather in Des Moines, Iowa

12:05 AM
Now
Rainy Weather
55° F
Feels Like 48°
Precipitation 52 %
Wind 9 mph
Humidity 75 %
Today
Rainy Weather
Day 59°
Night 50°
Precipitation 75 %
Wind 10 mph
UV Index (0 - 11+) 3

Des Moines Weather Forecast Updated

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

Day

61°

Night

45°

Wind

20 mph

UV Index

7

Precipitation

5 %

Air Quality in Des Moines

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.58 µg/m³
PM10 1.72 µg/m³
O3 0.035 ppm
NO2 0.9 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 3.24 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)
PM2.51.58 µg/m³
PM101.72 µg/m³
O368.47 µg/m³
NO21.61 µg/m³
SO20.26 µg/m³
CO122.52 µg/m³
NH33.24 µg/m³
NO0 µg/m³