Live

Waterloo Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Waterloo

Last Updated: 2026-07-19 13:41:01 (Local Time)

location image
Live AQI
38AQI (US)
Air Quality is
Good
PM2.5 :  8 µg/m³
pm10 :  9 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in Waterloo
partly cloudy

21 °C

Partly Cloudy
Humidity
Humidity49 %

Wind Speed
Wind Speed13 km/h

UV Index
UV Index7.9

Last Updated: 2026-07-19 13:41:01 (Local Time)
Rank935th

Currently, Waterloo ranks 935th among the cities with the highest AQI levels in the world.

Map

Waterloo

Major Air Pollutants

Waterloo

AQI Graph

Historical Air Quality Data

Waterloo

Waterloo
AQI (US)
.
18-07-2026Time19-07-2026
44
Min. AQI (US)1:01pm
154
Max. AQI (US)7:01pm

AQI (US) Trends - Annual Air Quality Changes

Waterloo, Ontario, Canada

Waterloo's Locations

Real-time Air Pollution Level

locations
Status
AQI (US)
PM₂.₅(µg/m³)
PM₁₀(µg/m³)
Temp.(°C)
Humi.(%)
Good
50
9
10
20
56
Moderate
58
16
29
21
49

Canada's Metro Cities

Air Quality Index

Health Advice For People Living In

Waterloo

1.5Cigarettes per day

Cigarette
Weekly 10.5 Cigarettes
Monthly 45 Cigarettes

Breathing the air in this location is as harmful as smoking 1.5 cigarettes a day.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI (US)

Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable



Prevent Health Problems: Understand Your Risks

Waterloo

asthma due to air pollution in WaterlooAsthma
heart due to air pollution in WaterlooHeart Issues
allergy due to air pollution in WaterlooAllergies
sinus due to air pollution in WaterlooSinus
flu due to air pollution in WaterlooCold/Flu
copd due to air pollution in WaterlooChronic (COPD)
Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2026

Canada

Analyze the real-time most air polluted cities in the country.

Waterloo's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets

Air Quality FAQs

at Waterloo

Frequently Asked Questions About Air Quality

1. What is the current AQI (US) level in Waterloo?

The current real-time AQI (US) level in Waterloo is 38 (Good). This was last updated 2026-07-19 13:41:01 (Local Time).

2. When was the best AQI (US) level in Waterloo in the last 24 hours?

The best AQI (US) level was 44 (Good) at 1:01 PM (Local Time) during the last 24 hours.

3. When was the worst AQI (US) level in Waterloo in the last 24 hours?

The worst AQI (US) level was 154 (Unhealthy) at 7:01 PM, Jul 18, 2026 (Local Time) during the last 24 hours.

4. What is the current trend of AQI (US) levels in Waterloo during last 24 hours?

The AQI (US) levels in Waterloo have been fluctuating throughout the last 24 hours. The levels have increased by highest 154 at 7:01 PM, Jul 18, 2026 (Local Time), lowest 44 at 1:01 PM (Local Time).

5. What actions are recommended as per the current AQI (US) level in Waterloo?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.