Hourly Weather | Today Thursday, September 3, 2026
Active Weather Warnings
Des Moines, Iowa
6 PM
Cloudy Weather
93°
Feels Like 97°
32
Humidity: 48%
UV Index: 1
Wind: 12 mph
7 PM
Cloudy Weather
91°
Feels Like 93°
23
Humidity: 49%
UV Index: 0
Wind: 10 mph
8 PM
Cloudy Night
90°
Feels Like 90°
5
Humidity: 53%
UV Index: 0
Wind: 10 mph
9 PM
Cloudy Night
86°
Feels Like 88°
5
Humidity: 57%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
82°
Feels Like 84°
5
Humidity: 63%
UV Index: 0
Wind: 9 mph
11 PM
Cloudy Night
81°
Feels Like 81°
5
Humidity: 69%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 2.63 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 2.41 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.99 µg/m³
  • PM10: 2.2 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.83 µg/m³
  • PM10: 2.04 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 1.96 µg/m³
  • O3: 0.038 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.68 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Weather Alerts and Warnings for Des Moines

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 3 at 1:38PM CDT until September 5 at 7:00PM CDT by NWS Des Moines IA
Sep 3, 1:38 PM Sep 5, 7:00 PM
WHAT: Heat index values up to 105.

WHERE: Portions of central and southern Iowa.

WHEN: Until 7 PM CDT Saturday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

ADDITIONAL DETAILS: While heat index values may not reach 105
degrees each day, the combination of the longevity of the heat and
little or limited relief during the overnight periods with warm
lows have prompted the multi-day Heat Advisory.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Sep 3, 3:55 PM Source: NWS Alert