Air Quality in Grimsby, Canada
Windy
21.5°C · 82.3% humidity
21.5°
Feels 21.5°
116
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Grimsby's air quality — share it
AQI Forecast
Calibrated
25
10am
25
25
116
1pm
90
92
78
4pm
69
62
57
7pm
34
22
21
10pm
19
20
20
1am
19
17
17
4am
16
16
16
7am
18
15
Station readings
18h ago
AQI 93
PM2.5 32.0 µg/m³ · 18h ago
CAMS model
adj -9
34
34
34
34
34
54
54
54
54
54
34
25
25
25
27
27
27
25
25
25
25
25
27
24
Air Quality Index Trend
8h · 3 stnGrimsby'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 Grimsby is 2.8× the WHO 24-hour guideline of 15 µg/m³.
82.3%
Humidity
60.8 km/h
Wind NE
1014.9 hPa
Pressure
14.9
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 Grimsby?
Temperature & Precipitation
PM2.5 Trend
8h · 3 stationsPM2.541.58 µg/m³
×2.8 WHO
Unhealthy for sensitive groups
PM1084.3 µg/m³
Moderate
UV INDEX14.9
Extreme
What is the 7-day forecast for Grimsby?
07-21
26.4° 21.3°
0.38 mm
07-22
22.4° 20.4°
07-23
21.5° 17.1°
07-24
24.6° 18.5°
07-25
21.3° 17.2°
3.13 mm
07-26
25.2° 20.3°
6.19 mm
07-27
27.3° 21.2°
0.13 mm
Both models agree
Avg diff: 2.0°C
Where are air quality stations near Grimsby?
52
Burlington, Ontario, Canada
31
Burlington, Ontario, Canada
10
Hamilton Mountain, Ontario, Canada
26
Hamilton Mountain, Ontario, Canada
38
Hamilton Downtown, Ontario, Canada
24
Hamilton Downtown, Ontario, Canada
10
Hamilton Downtown, Ontario, Canada
What cities are near Grimsby?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:16 UTC.