Air Quality in Ajax, Canada

Windy
22.4°C · 35.1% humidity
22.4°
Feels 22.4°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
57 4pm
57
64
53 7pm
76
78
80 10pm
81
94
95 1am
112
112
112 4am
113
114
96 7am
84
55
55 10am
55
57
57 1pm
57
57
Station readings
64
55
74
42
CAMS model adj +30
27
27
34
34
54
54
54
54
66
66
83
83
83
83
84
66
54
25
25
25
27
27
27
27
AD 728×90

Air Quality Index Trend

48h · 2 stn

Ajax's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

35.1%
Humidity
79.8 km/h
Wind NW
1013.7 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
53
13.06 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Ajax?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.513.06 µg/m³ ✓ WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (4 stations within 25 km)
13.06
Median
12.53
Average
10.1
Low
14.0
High
PM2.5 µg/m³ · Model: 13.7 · Bias: +0.6

What is the 7-day forecast for Ajax?

08-03
22.4° 17.3°
6.38 mm
08-04
28.4° 18.2°
1.0 mm
08-05
33.6° 14.1°
08-06
26.9° 18.2°
4.06 mm
08-07
28.1° 14.0°
2.94 mm
08-08
34.6° 17.4°
08-09
36.0° 19.8°
1.0 mm
Both models agree Avg diff: 3.6°C

Where are air quality stations near Ajax?

55
Oshawa, Ontario, Canada
15.4 km PM2.5: 14.0 µg/m³
46
Oshawa, Ontario, Canada
15.4 km PM2.5: 11.0 µg/m³
73
Oshawa, Ontario, Canada
15.4 km PM2.5: 22.6 µg/m³
39
Oshawa, Ontario, Canada
15.4 km PM2.5: 9.4 µg/m³
50
Oshawa, Ontario, Canada
15.4 km PM2.5: 12.0 µg/m³
53
Oshawa, Ontario, Canada
15.4 km PM2.5: 13.1 µg/m³
55
Oshawa, Ontario, Canada
15.4 km PM2.5: 14.0 µg/m³
42
Oshawa, Ontario, Canada
15.4 km PM2.5: 10.1 µg/m³
39
Toronto East, Ontario, Canada
22.4 km PM2.5: 9.4 µg/m³
50
Toronto East, Ontario, Canada
22.4 km PM2.5: 12.0 µg/m³

What cities are near Ajax?

55 Whitby 52 Pickering 51 Rouge 55 Brooklin 51 West Hill 50 Morningside 55 Oshawa 49 Malvern 48 Woburn 49 Markham
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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 2026-08-07T23:45 UTC.