Air Quality in Keswick, Canada

Clear
26.7°C · 46.7% humidity
26.7°
Feels 26.7°
71
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
78 10am
78
76
71 1pm
72
73
74 4pm
75
75
75 7pm
76
76
78 10pm
78
78
78 1am
78
76
76 4am
76
76
76 7am
76
75
Station readings
82
70
70
74
CAMS model adj +51
27
27
25
25
25
25
25
25
25
25
25
25
27
27
27
27
27
25
25
25
25
25
25
24
AD 728×90

Air Quality Index Trend

48h · 1 stn

Keswick'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 Keswick is 1.4× the WHO 24-hour guideline of 15 µg/m³.

46.7%
Humidity
30.5 km/h
Wind NNE
1014.6 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
71
21.67 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Keswick?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.521.67 µg/m³ ×1.4 WHO
Moderate
PM1084.3 µg/m³
Moderate
UV INDEX10.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
21.67
Median
21.67
Average
21.67
Low
21.67
High
PM2.5 µg/m³ · Model: 40.48 · Bias: +18.8

What is the 7-day forecast for Keswick?

07-21
26.7° 20.6°
24.31 mm
07-22
24.6° 17.7°
07-23
19.1° 15.7°
0.13 mm
07-24
22.2° 18.1°
07-25
22.8° 13.6°
1.38 mm
07-26
26.3° 19.3°
3.56 mm
07-27
28.8° 19.1°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Keswick?

17
Newmarket, Ontario, Canada
22.9 km PM2.5: 4.1 µg/m³
31
Newmarket, Ontario, Canada
22.9 km PM2.5: 7.4 µg/m³
43
Barrie, Ontario, Canada
23.8 km PM2.5: 10.3 µg/m³
34
Barrie, Ontario, Canada
23.8 km PM2.5: 8.2 µg/m³
74
Barrie, Ontario
23.9 km PM2.5: 23.0 µg/m³

What cities are near Keswick?

66 Innisfil 114 East Gwillimbury 114 Newmarket 71 Barrie 57 Aurora 116 Whitchurch-Stouffville 116 Uxbridge 56 Alliston 116 Stouffville 78 Orillia
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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 2026-07-21T17:17 UTC.