Air Quality in Welland, Canada
Windy
22.3°C · 36.6% humidity
22.3°
Feels 22.3°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Welland's air quality — share it
AQI Forecast
Calibrated
35
4pm
35
35
35
7pm
35
35
35
10pm
35
35
35
1am
33
33
33
4am
33
33
33
7am
33
32
32
10am
32
32
33
1pm
33
33
Station readings
35
34
35
36
CAMS model
adj +8
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
25
24
24
24
24
25
25
25
Air Quality Index Trend
27h · 1 stnWelland's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
36.6%
Humidity
57.4 km/h
Wind N
1014.6 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.3 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Welland?
Temperature & Precipitation
PM2.5 Trend
27h · 1 stationPM2.58.3 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
Station readings (2 stations within 25 km)
8.3
Median
8.3
Average
8.2
Low
8.4
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +1.7
What is the 7-day forecast for Welland?
08-03
23.3° 20.5°
4.5 mm
08-04
32.4° 18.3°
8.44 mm
08-05
31.7° 15.2°
1.56 mm
08-06
29.2° 18.7°
2.38 mm
08-07
26.6° 17.9°
0.31 mm
08-08
31.3° 19.1°
0.13 mm
08-09
34.2° 21.2°
Both models agree
Avg diff: 3.1°C
Where are air quality stations near Welland?
36
St. Catharines, Ontario, Canada
30
St. Catharines, Ontario, Canada
42
St. Catharines, Ontario, Canada
35
St. Catharines, Ontario, Canada
35
St. Catharines, Ontario, Canada
39
St. Catharines, Ontario, Canada
34
St. Catharines, Ontario, Canada
What cities are near Welland?
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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 2026-08-07T23:45 UTC.