Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Thunder Bay
Air quality index (AQI) and PM2.5 air pollution in Thunder Bay
4K people follow this city
Thunder Bay Air Quality Map
Real-time Thunder Bay air pollution map
AIR QUALITY DATA CONTRIBUTORS
2 Contributors
See all
Pollen
What is the pollen count in Thunder Bay today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Thunder Bay?
| Weather | Broken clouds |
| Temperature | 53.6°F |
| Humidity | 73% |
| Wind | 2.4 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Winnipeg, Manitoba | 63 |
| 2 | Val-d'Or, Quebec | 61 |
| 3 | Quebec City, Quebec | 59 |
| 4 | Levis, Quebec | 57 |
| 5 | Guelph, Ontario | 55 |
| 6 | Laval, Quebec | 55 |
| 7 | Maniwaki, Quebec | 54 |
| 8 | Saguenay, Quebec | 54 |
| 9 | Sherbrooke, Quebec | 54 |
| 10 | Edmundston, New Brunswick | 50 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Thunder Bay aqi ranking
Real-time Thunder Bay air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Bears' Cave | 54 |
| 2 | Ontario Ministry of the Environment Thunder Bay | 38 |
| 3 | Simon Fraser Drive | 33 |
(local time)
SEE WORLD AQI RANKING
US AQI
46
live AQI index
Good
Overview
What is the current air quality in Thunder Bay?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 46 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 8.4µg/m³ | |
| NO2 | 22.2µg/m³ | |
!
PM2.5
x1.7
PM2.5 concentration in Thunder Bay is currently 1.7 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Thunder Bay?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Thunder Bay air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 32 AQI US |  | 59° 42.8° |  8.9 mp/h |
| Thursday, May 30 | Good 26 AQI US |  | 64.4° 44.6° | 8.9 mp/h |
| Friday, May 31 | Good 37 AQI US | | 59° 50° | 6.7 mp/h |
| Today | Good 46 AQI US | 90% | 59° 50° | 6.7 mp/h |
| Sunday, Jun 2 | Good 44 AQI US | | 57.2° 46.4° | 6.7 mp/h |
| Monday, Jun 3 | Moderate 52 AQI US  | 100% | 51.8° 42.8° | 6.7 mp/h |
| Tuesday, Jun 4 | Good 47 AQI US | 100% | 59° 48.2° | 8.9 mp/h |
| Wednesday, Jun 5 | Good 37 AQI US | 100% | 59° 46.4° | 4.5 mp/h |
| Thursday, Jun 6 | Good 9 AQI US | 100% | 53.6° 48.2° | 15.7 mp/h |
| Friday, Jun 7 | Good 8 AQI US | | 62.6° 48.2° | 13.4 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Thunder Bay air quality data attribution
2Contributors
- AirGradient
1 station
Corporate Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
3 Data sources
Data validated and calibrated by IQAirWhere is the cleanest air quality in Thunder Bay?
AQI US, Metric