Today | Weather | Thursday, February 5, 2026

Weather in Waterloo, Iowa

07:33 PM
Now
Night
32° F
Feels Like 28°
Precipitation 0 %
Wind 6 mph
Humidity 89 %
Today
Cloudy Weather
Day 37°
Night 28°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 3

Waterloo Weather Forecast Updated

Last updated on

Air Quality in Waterloo

NOW
25 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.66 µg/m³
PM10 5.76 µg/m³
O3 0.027 ppm
NO2 6.5 ppb
SO2 0.1 ppb
CO 0.20 ppm
NH3 0.41 µg/m³
NO 0 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)
PM2.54.66 µg/m³
PM105.76 µg/m³
O353.12 µg/m³
NO212.19 µg/m³
SO20.18 µg/m³
CO229.57 µg/m³
NH30.41 µg/m³
NO0 µg/m³