Air Quality in Thorold, Canada

Windy
11.2°C · 76.4% humidity
11.2°
Feels 11.2°
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 9pm
27
27
36 12am
40
59
57 3am
56
36
28 6am
26
25
25 9am
25
25
25 12pm
25
27
27 3pm
27
27
25 6pm
25
27
AD 728×90

Air Quality Index Trend

47h · 4 stn

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

76.4%
Humidity
75.6 km/h
Wind NNE
1022.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
36
8.63 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Thorold?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations
PM2.58.63 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
8.63
Median
8.63
Average
8.2
Low
9.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -2.4

What is the 7-day forecast for Thorold?

05-30
14.4° 11.0°
0.13 mm
05-31
20.4° 10.6°
06-01
18.2° 11.5°
06-02
16.5° 11.9°
0.25 mm
06-03
18.6° 14.6°
0.13 mm
06-04
18.7° 12.3°
0.13 mm
06-05
18.8° 11.6°
2.56 mm
Both models agree Avg diff: 4.3°C

Where are air quality stations near Thorold?

189
St. Catharines, Ontario, Canada
5.6 km PM2.5: 129.1 µg/m³
53
St. Catharines, Ontario, Canada
5.6 km PM2.5: 13.1 µg/m³
36
Tonawanda II, New York, USA
27.7 km PM2.5: 8.6 µg/m³
23
Tonawanda II, New York, USA
27.7 km PM2.5: 5.5 µg/m³

What cities are near Thorold?

36 St. Catharines 36 Niagara Falls 36 Niagara Falls 36 Welland 36 Niagara-on-the-Lake 14 Grand Island 35 Port Colborne 14 North Tonawanda 34 Grimsby 14 Kenmore
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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 2026-05-30T04:07 UTC.