Today | Weather | Wednesday, March 18, 2026

Weather in Des Moines, Iowa

02:08 PM
Now
Cloudy Weather
54° F
Feels Like 61°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4
Humidity 49 %
Today
Cloudy Weather
Day 57°
Night 37°
Precipitation 2 %
Wind 5 mph
UV Index (0 - 11+) 4
Overnight Frost 5 AM – 8 AM

Des Moines Weather Forecast Updated

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

Day

75°

Night

41°

Wind

11 mph

UV Index

3

Precipitation

1 %

Air Quality in Des Moines

NOW
48 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 11.55 µg/m³
PM10 12.88 µg/m³
O3 0.038 ppm
NO2 1.9 ppb
SO2 0.3 ppb
CO 0.17 ppm
NH3 3.18 µg/m³
NO 1.89 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)
PM2.511.55 µg/m³
PM1012.88 µg/m³
O374.71 µg/m³
NO23.52 µg/m³
SO20.9 µg/m³
CO199.15 µg/m³
NH33.18 µg/m³
NO1.89 µg/m³