What is the air quality in Ajax today?

The current Air Quality Index (AQI) in Ajax is 23 (Good). PM2.5 concentration is 5.46 µg/m³.

What is the temperature in Ajax right now?

The current temperature in Ajax is 3.0°C (feels like -1.8°C). Humidity is 63.4% and wind speed is 22.7 km/h.

Is it safe to go outside in Ajax?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Ajax, Canada

Partly Cloudy

3.0°C · 63.4% humidity

3.0°

Feels -1.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

25 4pm

23 7pm

—

— 10pm

—

— 1am

—

— 4am

—

— 7am

—

— 10am

—

— 1pm

—

Station readings

Air Quality Index Trend

47h · 2 stn

View full history →

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.

63.4%

Humidity

22.7 km/h

Wind SSE

1029.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

5.46 µg/m³

PM10▲

27.4 µg/m³

050100150200300500

What is the weather forecast for Ajax?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations

PM2.55.46 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

5.46

Median

5.55

Average

5.3

Low

5.8

High

PM2.5 µg/m³ · Model: 8.2 · Bias: +2.7

What is the 7-day forecast for Ajax?

10-20

7.6° 3.2°

0.06 mm

10-21

17.9° 3.0°

10-22

12.8° 5.4°

10-23

11.7° 1.4°

3.37 mm

10-24

14.0° 1.7°

0.62 mm

10-25

11.8° 3.2°

4.56 mm

10-26

8.5° 4.2°

13.56 mm

Both models agree Avg diff: 4.7°C

Where are air quality stations near Ajax?

Oshawa, Ontario, Canada

15.4 km PM2.5: 3.6 µg/m³

Oshawa, Ontario, Canada

15.4 km PM2.5: 6.2 µg/m³

Oshawa, Ontario, Canada

15.4 km PM2.5: 5.3 µg/m³

Toronto East, Ontario, Canada

22.4 km PM2.5: 4.3 µg/m³

Toronto East, Ontario, Canada

22.4 km PM2.5: 5.3 µg/m³

Toronto East, Ontario, Canada

22.4 km PM2.5: 5.3 µg/m³

Toronto East, Ontario, Canada

22.4 km PM2.5: 5.3 µg/m³

–

Wood Glen

26.9 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Ajax?

22 Whitby 23 Pickering 22 Rouge 22 Brooklin 23 West Hill 23 Morningside 22 Oshawa 22 Malvern 23 Woburn 21 Markham

Get AQI alerts for Ajax

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T23:40 UTC.