Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Waterloo
Air quality index (AQI) and PM2.5 air pollution in Waterloo
9 people follow this city
Waterloo Air Quality Map
Real-time Waterloo air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Waterloo today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Waterloo?
| Weather | Clear sky |
| Temperature | 73.4°F |
| Humidity | 32% |
| Wind | 2 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Downey, California | 84 |
| 2 | La Habra, California | 80 |
| 3 | San Gabriel, California | 80 |
| 4 | La Mirada, California | 78 |
| 5 | Monterey Park, California | 75 |
| 6 | Alhambra, California | 73 |
| 7 | Hot Springs, South Dakota | 73 |
| 8 | Claremont, California | 71 |
| 9 | Maricopa, Arizona | 71 |
| 10 | Riverside, California | 71 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
31*
live AQI index
Good
Overview
What is the current air quality in Waterloo?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 31* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.7*µg/m³ | |
!
PM2.5
x1.1
PM2.5 concentration in Waterloo is currently 1.1 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Waterloo?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Waterloo air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 31 AQI US | | 73.4° 51.8° |  8.9 mp/h |
| Sunday, May 12 | Good 38 AQI US | | 77° 53.6° | 11.2 mp/h |
| Monday, May 13 | Good 49 AQI US |  100% | 64.4° 59° | 13.4 mp/h |
| Tuesday, May 14 | Moderate 55 AQI US  | 100% | 71.6° 57.2° | 15.7 mp/h |
| Wednesday, May 15 | Good 39 AQI US |  | 71.6° 50° | 11.2 mp/h |
| Thursday, May 16 | Good 35 AQI US | 30% | 73.4° 55.4° | 8.9 mp/h |
| Friday, May 17 | Moderate 75 AQI US | 100% | 69.8° 59° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Waterloo?
No locations are available.
AQI US, Metric