Air Quality in Thorold, Canada
Drizzle
9.9°C · 89.4% humidity
9.9°
Feels 3.7°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Thorold's air quality — share it
AQI Forecast
Calibrated
40
5pm
40
33
30
8pm
33
33
33
11pm
33
33
33
2am
33
33
33
5am
33
33
33
8am
40
40
60
11am
60
60
40
2pm
40
33
Station readings
26h ago
AQI 33
PM2.5 7.9 µg/m³ · 26h ago
Air Quality Index Trend
48h · 4 stnThorold's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
89.4%
Humidity
103.3 km/h
Wind WNW
1001.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.13 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Thorold?
Temperature & Precipitation
PM2.5 Trend
48h · 4 stationsPM2.57.13 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
7.13
Median
7.13
Average
7.0
Low
7.2
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -0.6
What is the 7-day forecast for Thorold?
06-09
24.3° 9.9°
2.94 mm
06-10
15.5° 12.6°
3.31 mm
06-11
20.4° 13.2°
06-12
21.9° 14.0°
06-13
21.0° 17.6°
1.31 mm
06-14
19.6° 14.0°
06-15
20.8° 17.9°
0.62 mm
Both models agree
Avg diff: 7.4°C
Where are air quality stations near Thorold?
63
St. Catharines, Ontario, Canada
8
St. Catharines, Ontario, Canada
3
Tonawanda II, New York, USA
18
Tonawanda II, New York, USA
What cities are near Thorold?
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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 2026-06-09T00:40 UTC.