NASA GSFC Rutgers Calib. N15 Air Quality

Monitoring Station · Alliston, Canada
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
27 12am
26
27
27 3am
27
27
27 6am
27
29
29 9am
29
29
27 12pm
29
29
— 3pm
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— 6pm
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— 9pm
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Station readings
27
26
CAMS model adj +2
25
25
25
25
25
25
25
25
27
27
27
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25
27
27

Air Quality Forecast (24h)

PM2.56.3 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

38
Barrie, Ontario
17.9 km PM2.5: 9.0 µg/m³
82
Barrie, Ontario, Canada
17.9 km PM2.5: 26.8 µg/m³
90
Barrie, Ontario, Canada
17.9 km PM2.5: 30.6 µg/m³
84
Newmarket, Ontario, Canada
31.6 km PM2.5: 27.8 µg/m³
94
Newmarket, Ontario, Canada
31.6 km PM2.5: 32.5 µg/m³

Nearby Cities

26 Alliston 32 Innisfil 33 Barrie 32 Keswick 30 East Gwillimbury 30 Newmarket 30 Aurora 27 Wasaga Beach 26 Bolton

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T03:50 UTC.