Today | Weather | Tuesday, September 1, 2026

Weather in Waterloo, Iowa

10:24 AM
Now
Cloudy Weather
79° F
Feels Like 90°
Precipitation 20 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 89 %
Today
Cloudy Weather
Day 91°
Night 70°
Precipitation 25 %
Wind 6 mph
UV Index (0 - 11+) 5

Waterloo Weather Forecast Updated

28 minutes ago
Last updated on

Air Quality in Waterloo

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

Pollutant Concentrations:

PM2.5 6.33 µg/m³
PM10 6.87 µg/m³
O3 0.016 ppm
NO2 1.5 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 1.51 µg/m³
NO 1.29 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)
PM2.56.33 µg/m³
PM106.87 µg/m³
O331.59 µg/m³
NO22.88 µg/m³
SO20.35 µg/m³
CO140.22 µg/m³
NH31.51 µg/m³
NO1.29 µg/m³