Air Quality in Waterdown, Canada

Windy
23.8°C · 61.5% humidity
23.8°
Feels 23.8°
147
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
18 10am
25
25
147 1pm
112
88
70 4pm
77
68
42 7pm
30
24
22 10pm
20
19
20 1am
18
17
17 4am
17
16
18 7am
18
15
Station readings 18h ago
AQI 92
PM2.5 31.8 µg/m³ · 18h ago
CAMS model adj -9
27
34
34
34
34
34
34
54
54
34
27
25
25
25
25
27
25
25
25
25
25
27
27
24
AD 728×90

Air Quality Index Trend

8h · 7 stn

Waterdown'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 Waterdown is 3.6× the WHO 24-hour guideline of 15 µg/m³.

61.5%
Humidity
45.9 km/h
Wind E
1015.0 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
147
54.08 µg/m³
PM10
78
109.3 µg/m³
050100150200300500

What is the weather forecast for Waterdown?

Temperature & Precipitation

PM2.5 Trend

8h · 7 stations
PM2.554.08 µg/m³ ×3.6 WHO
Unhealthy for sensitive groups
PM10109.3 µg/m³
Moderate
UV INDEX17.4
Extreme
AD 300×250

What is the 7-day forecast for Waterdown?

07-21
23.8° 20.1°
2.75 mm
07-22
23.4° 18.2°
0.06 mm
07-23
21.1° 15.2°
07-24
24.0° 16.7°
07-25
24.3° 14.4°
1.0 mm
07-26
27.2° 17.9°
1.69 mm
07-27
28.5° 19.1°
0.5 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Waterdown?

31
Burlington, Ontario, Canada
6.8 km PM2.5: 7.4 µg/m³
52
Burlington, Ontario, Canada
6.8 km PM2.5: 12.6 µg/m³
38
Hamilton Downtown, Ontario, Canada
8.6 km PM2.5: 9.1 µg/m³
10
Hamilton Downtown, Ontario, Canada
8.6 km PM2.5: 2.4 µg/m³
24
Hamilton Downtown, Ontario, Canada
8.6 km PM2.5: 5.8 µg/m³
6
Hamilton West, Ontario, Canada
8.7 km PM2.5: 1.4 µg/m³
13
Hamilton West, Ontario, Canada
8.7 km PM2.5: 3.1 µg/m³
26
Hamilton Mountain, Ontario, Canada
11.7 km PM2.5: 6.2 µg/m³
10
Hamilton Mountain, Ontario, Canada
11.7 km PM2.5: 2.4 µg/m³
164
Milton, Ontario, Canada
21.9 km PM2.5: 80.7 µg/m³

What cities are near Waterdown?

147 Burlington 116 Hamilton 147 Ancaster 116 Stoney Creek 93 Milton 93 Oakville 116 Grimsby 93 Mississauga 145 Fiddlesticks 114 Christopher-Champlain
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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.