Air Quality in Stouffville, Canada

Clear
27.6°C · 45.7% humidity
27.6°
Feels 29.1°
116
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
14 10am
14
14
116 1pm
87
66
52 4pm
41
33
48 7pm
24
12
10 10pm
9
10
16 1am
15
8
8 4am
7
5
5 7am
7
4
Station readings 18h ago
AQI 66
PM2.5 19.4 µg/m³ · 18h ago
CAMS model adj -20
34
34
34
34
34
34
34
34
34
54
34
25
25
25
27
34
34
27
27
27
25
25
27
24
AD 728×90

Air Quality Index Trend

8h · 3 stn

Stouffville'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 Stouffville is 2.8× the WHO 24-hour guideline of 15 µg/m³.

45.7%
Humidity
30.4 km/h
Wind ESE
1014.6 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
116
41.58 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Stouffville?

Temperature & Precipitation

PM2.5 Trend

8h · 3 stations
PM2.541.58 µg/m³ ×2.8 WHO
Unhealthy for sensitive groups
PM1084.3 µg/m³
Moderate
UV INDEX12.9
Extreme
AD 300×250

What is the 7-day forecast for Stouffville?

07-21
27.6° 21.0°
3.69 mm
07-22
23.2° 18.1°
0.94 mm
07-23
18.8° 14.7°
07-24
22.2° 16.7°
07-25
25.0° 13.9°
0.5 mm
07-26
26.8° 18.5°
0.5 mm
07-27
29.3° 19.4°
Both models agree Avg diff: 3.1°C

Where are air quality stations near Stouffville?

31
Newmarket, Ontario, Canada
20.6 km PM2.5: 7.4 µg/m³
17
Newmarket, Ontario, Canada
20.6 km PM2.5: 4.1 µg/m³
39
Toronto East, Ontario, Canada
24.4 km PM2.5: 9.4 µg/m³
33
Toronto East, Ontario, Canada
24.4 km PM2.5: 7.9 µg/m³
26
Toronto East, Ontario, Canada
24.4 km PM2.5: 6.2 µg/m³
30
Toronto North, Ontario, Canada
24.6 km PM2.5: 7.2 µg/m³
18
Toronto North, Ontario, Canada
24.6 km PM2.5: 4.3 µg/m³
57
NASA GSFC Rutgers Calib. N20
26.4 km PM2.5: 15.0 µg/m³

What cities are near Stouffville?

116 Whitchurch-Stouffville 84 Markham 116 Pickering 84 Milliken 96 Malvern 57 Aurora 92 Agincourt North 116 Uxbridge 79 Steeles 65 Richmond Hill
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:20 UTC.