Air Quality in Welland, Canada
Clear
29.6°C · 49.0% humidity
29.6°
Feels 32.3°
116
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Welland's air quality — share it
AQI Forecast
Calibrated
51
10am
51
51
116
1pm
98
84
95
4pm
68
63
60
7pm
57
47
45
10pm
43
43
43
1am
43
43
42
4am
42
42
42
7am
44
41
Station readings
18h ago
AQI 82
PM2.5 26.8 µg/m³ · 18h ago
CAMS model
adj +17
34
34
34
34
34
34
54
34
34
34
34
25
25
24
24
25
25
25
25
25
25
25
27
24
Air Quality Index Trend
8h · 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. Current PM2.5 concentration in Welland is 2.8× the WHO 24-hour guideline of 15 µg/m³.
49.0%
Humidity
34.6 km/h
Wind NNE
1013.5 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
41.58 µg/m³
PM10
84.3 µg/m³
050100150200300500
What is the weather forecast for Welland?
Temperature & Precipitation
PM2.5 Trend
8h · 1 stationPM2.541.58 µg/m³
×2.8 WHO
Unhealthy for sensitive groups
PM1084.3 µg/m³
Moderate
UV INDEX17.4
Extreme
What is the 7-day forecast for Welland?
07-21
29.6° 21.3°
07-22
24.8° 19.2°
1.81 mm
07-23
22.9° 16.2°
1.13 mm
07-24
24.1° 14.1°
07-25
23.9° 15.2°
4.81 mm
07-26
28.2° 17.3°
8.87 mm
07-27
28.1° 20.6°
1.25 mm
Both models agree
Avg diff: 3.3°C
Where are air quality stations near Welland?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:17 UTC.