Hourly Weather Forecast for West Des Moines, Iowa

Hourly Weather | Today › Tuesday, September 1, 2026

Active Weather Warnings

Heat Advisory

West Des Moines, Iowa

11 AM

84°

Feels Like 95°

Humidity: 64%

UV Index: 5

Wind: 7 mph

12 PM

88°

Feels Like 97°

Humidity: 57%

UV Index: 6

Wind: 7 mph

1 PM

90°

Feels Like 100°

Humidity: 52%

UV Index: 7

Wind: 7 mph

2 PM

91°

Feels Like 100°

Humidity: 49%

UV Index: 6

Wind: 8 mph

3 PM

93°

Feels Like 100°

Humidity: 48%

UV Index: 5

Wind: 8 mph

4 PM

93°

Feels Like 100°

Humidity: 46%

UV Index: 4

Wind: 9 mph

5 PM

93°

Feels Like 99°

Humidity: 48%

UV Index: 2

Wind: 9 mph

6 PM

91°

Feels Like 97°

Humidity: 52%

UV Index: 1

Wind: 8 mph

7 PM

90°

Feels Like 93°

Humidity: 58%

UV Index: 0

Wind: 8 mph

8 PM

88°

Feels Like 91°

Humidity: 62%

UV Index: 0

Wind: 8 mph

9 PM

84°

Feels Like 88°

Humidity: 67%

UV Index: 0

Wind: 8 mph

10 PM

81°

Feels Like 82°

Humidity: 71%

UV Index: 0

Wind: 8 mph

11 PM

81°

Feels Like 82°

Humidity: 71%

UV Index: 0

Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 AM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.09 µg/m³
PM₁₀: 5.56 µg/m³
O₃: 0.042 ppm
NO₂: 0.9 ppb
SO₂: 0.7 ppb
CO: 0.10 ppm

Health Recommendations:

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

12 PM

44 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.99 µg/m³
PM₁₀: 6.5 µg/m³
O₃: 0.047 ppm
NO₂: 0.7 ppb
SO₂: 0.7 ppb
CO: 0.10 ppm

Health Recommendations:

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

1 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.11 µg/m³
PM₁₀: 7.65 µg/m³
O₃: 0.052 ppm
NO₂: 0.6 ppb
SO₂: 0.8 ppb
CO: 0.10 ppm

Health Recommendations:

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

2 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.7 µg/m³
PM₁₀: 6.27 µg/m³
O₃: 0.054 ppm
NO₂: 0.4 ppb
SO₂: 0.6 ppb
CO: 0.09 ppm

Health Recommendations:

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

3 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.73 µg/m³
PM₁₀: 5.3 µg/m³
O₃: 0.053 ppm
NO₂: 0.3 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

4 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.53 µg/m³
PM₁₀: 5.08 µg/m³
O₃: 0.053 ppm
NO₂: 0.3 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

5 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.56 µg/m³
PM₁₀: 5.09 µg/m³
O₃: 0.054 ppm
NO₂: 0.4 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

6 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.68 µg/m³
PM₁₀: 5.17 µg/m³
O₃: 0.053 ppm
NO₂: 0.6 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

7 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.74 µg/m³
PM₁₀: 5.2 µg/m³
O₃: 0.053 ppm
NO₂: 0.8 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

8 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.76 µg/m³
PM₁₀: 5.2 µg/m³
O₃: 0.052 ppm
NO₂: 1.1 ppb
SO₂: 0.4 ppb
CO: 0.09 ppm

Health Recommendations:

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

9 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.85 µg/m³
PM₁₀: 5.29 µg/m³
O₃: 0.052 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.

10 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.03 µg/m³
PM₁₀: 5.49 µg/m³
O₃: 0.052 ppm
NO₂: 1.3 ppb
SO₂: 0.5 ppb
CO: 0.09 ppm

Health Recommendations:

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

11 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.28 µg/m³
PM₁₀: 5.77 µg/m³
O₃: 0.051 ppm
NO₂: 1.3 ppb
SO₂: 0.6 ppb
CO: 0.10 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for West Des Moines

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 1 at 8:00AM CDT until September 2 at 7:00PM CDT by NWS Des Moines IA

Sep 1, 8:00 AM → Sep 2, 7:00 PM

WHAT: Heat index values up to 100-103 degrees.

WHERE: Portions of central and south central Iowa, including the
Des Moines metro.

WHEN: Until 7 PM CDT Wednesday.

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

+ 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 1, 9:56 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for West Des Moines

Heat Advisory

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