What is the air quality in Waterloo today?

The current Air Quality Index (AQI) in Waterloo is 118 (Unhealthy for sensitive groups). PM2.5 concentration is 42.4 µg/m³.

What is the temperature in Waterloo right now?

The current temperature in Waterloo is 25.6°C (feels like 25.6°C). Humidity is 77.3% and wind speed is 59.2 km/h.

Sensitive groups should reduce prolonged outdoor exertion. The UV Index is 0 (Extreme).

Windy

25.6°C · 77.3% humidity

25.6°

Feels 25.6°

118

Unhealthy for sensitive groups

Sensitive groups should reduce prolonged outdoor exertion.

Model forecast

AQI Forecast

75 7am

75 10am

75 1pm

75 4pm

75 7pm

75 10pm

75 1am

75 4am

77.3%

Humidity

59.2 km/h

Wind WNW

1012.2 hPa

Pressure

24.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

PM2.542.4 µg/m³ ×2.8 WHO

Unhealthy for sensitive groups

PM10104.9 µg/m³

Moderate

UV INDEX24.9

Extreme

Both models agree Avg diff: 2.1°C

Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T10:00 UTC.