Today | Weather | Thursday, January 8, 2026

Weather in Waterloo, Iowa

01:41 AM
Now
Cloudy Night
32° F
Feels Like 28°
Precipitation 0 %
Wind 6 mph
Humidity 83 %
Today
Rainy Weather
Day 41°
Night 30°
Precipitation 99 %
Wind 8 mph
UV Index (0 - 11+) 1

Waterloo Weather Forecast Updated

30 minutes ago
Last updated on

Air Quality in Waterloo

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.66 µg/m³
PM10 4.98 µg/m³
O3 0.032 ppm
NO2 2.1 ppb
SO2 0.1 ppb
CO 0.15 ppm
NH3 0.59 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
PM104.98 µg/m³
O362.17 µg/m³
NO23.92 µg/m³
SO20.3 µg/m³
CO171.45 µg/m³
NH30.59 µg/m³
NO0 µg/m³