Air Quality in Thunder Bay, Canada

Cloudy
2.0°C · 77.1% humidity
2.0°
Feels -3.1°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
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Station readings
22
23
24
25
26

Air Quality Index Trend

46h · 1 stn

Thunder Bay's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

77.1%
Humidity
22.9 km/h
Wind SE
1027.2 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
26
6.35 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Thunder Bay?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station
PM2.56.35 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.0
Low
Station readings (2 stations within 25 km)
6.35
Median
6.35
Average
6.0
Low
6.7
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -0.3

What is the 7-day forecast for Thunder Bay?

10-20
5.5° -3.4°
10-21
10.6° 2.0°
10-22
8.6° 3.5°
0.19 mm
10-23
6.8° 0.1°
0.25 mm
10-24
10.4° 2.2°
0.19 mm
10-25
7.6° -3.0°
0.25 mm
10-26
6.4° -0.7°
0.06 mm
Both models agree Avg diff: 6.6°C

Where are air quality stations near Thunder Bay?

18
Thunder Bay, Ontario, Canada
3.0 km PM2.5: 4.3 µg/m³
26
Thunder Bay, Ontario, Canada
3.0 km PM2.5: 6.2 µg/m³
25
Thunder Bay, Ontario, Canada
3.0 km PM2.5: 6.0 µg/m³
21
Thunder Bay, Ontario, Canada
3.0 km PM2.5: 5.0 µg/m³

What cities are near Thunder Bay?

34 Marquette 23 Duluth 15 Superior 26 Hibbing
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T22:41 UTC.