Today | Weather | Tuesday, September 1, 2026
Active Weather Warnings

Weather in Iowa City, Iowa

10:27 AM
Now
Sunny Weather
81° F
Feels Like 95°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 4
Humidity 82 %
Today
Cloudy Weather
Day 97°
Night 72°
Precipitation 9 %
Wind 6 mph
UV Index (0 - 11+) 7

Iowa City Weather Forecast Updated

24 minutes ago
Last updated on

Air Quality in Iowa City

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

Pollutant Concentrations:

PM2.5 6.23 µg/m³
PM10 6.72 µg/m³
O3 0.020 ppm
NO2 1.2 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 2.25 µg/m³
NO 0.85 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)
PM2.56.23 µg/m³
PM106.72 µg/m³
O339.04 µg/m³
NO22.24 µg/m³
SO20.35 µg/m³
CO126.24 µg/m³
NH32.25 µg/m³
NO0.85 µg/m³

Weather Alerts and Warnings for Iowa City

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 1 at 9:06AM CDT until September 3 at 7:00PM CDT by NWS Quad Cities IA IL
Sep 1, 9:06 AM Sep 3, 7:00 PM
WHAT: Heat index values up to 104 expected.

WHERE: Portions of northwest and west central Illinois, east
central and southeast Iowa, and northeast Missouri.

WHEN: Until 7 PM CDT Thursday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Sep 1, 10:02 AM Source: NWS Alert