What is the air quality in Marshalltown today?

The current Air Quality Index (AQI) in Marshalltown is 37 (Good). PM2.5 concentration is 8.76 µg/m³.

What is the temperature in Marshalltown right now?

The current temperature in Marshalltown is 19.6°C (feels like 19.6°C). Humidity is 44.9% and wind speed is 42.1 km/h.

Is it safe to go outside in Marshalltown?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 7.9 (Very High).

Air Quality in Marshalltown, United States

Drizzle

19.6°C · 44.9% humidity

19.6°

Feels 19.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

25 7am

37 10am

29 1pm

27 4pm

26 7pm

27 10pm

25 1am

25 4am

View AQI history for Marshalltown →

Marshalltown's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

44.9%

Humidity

42.1 km/h

Wind NNW

1021.6 hPa

Pressure

7.9

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.76 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Marshalltown?

Temperature & Precipitation

PM2.58.76 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX7.9

Very High

What is the 7-day forecast for Marshalltown?

09-05

29.2° 18.2°

1.63 mm

09-06

31.8° 11.0°

0.13 mm

09-07

26.2° 17.1°

2.12 mm

09-08

25.6° 13.4°

11.63 mm

09-09

33.9° 16.5°

09-10

28.2° 16.9°

0.69 mm

09-11

26.8° 15.4°

0.13 mm

Both models agree Avg diff: 6.4°C

What cities are near Marshalltown?

37 Ames 25 Altoona 18 Cedar Falls 18 Waterloo 25 Ankeny 25 Des Moines 25 Johnston 25 Urbandale 25 Clive 25 West Des Moines

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T15:50 UTC.