UV Index in Ajax, Ontario, Canada

· America/Toronto

2.9
Low · clear-sky maximum Tuesday, October 20, 2026

At solar noon (01:00:58 PM) the sun reaches 35.7° above the horizon in Ajax. Without clouds, that corresponds to a maximum UV index of about 2.9 (low). Clouds usually lower the real value; snow, sand, water and altitude can raise it.

☀️ Sun Safety: When the UV index is high, protect yourself with sunscreen, shade, and a hat. Values of 6 or more indicate increased sunburn risk!

UV index in Ajax, next 14 days

DateSun at noonClear-sky maxForecast max
35.7° 2.9 Low —
35.3° 2.9 Low —
34.9° 2.8 Low —
34.6° 2.8 Low —
34.2° 2.7 Low —
33.9° 2.7 Low —
33.6° 2.6 Low —
33.2° 2.5 Low —
32.9° 2.5 Low —
32.6° 2.4 Low —
32.2° 2.4 Low —
31.9° 2.3 Low —
31.6° 2.3 Low —
31.3° 2.2 Low —

Clear-sky values are calculated from the sun's height at solar noon (cloud-free sky, average ozone). Forecast values from Open-Meteo include clouds and load in your browser.

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The UV index in Ajax measures the intensity of ultraviolet radiation reaching the ground. Values below 3 are considered low risk, while 6 and above require sun protection such as sunscreen, sunglasses, and shade. The clear-sky value shows how strong the sun can get on each day; the forecast shows what is expected with clouds. See today's sunrise and sunset times for Ajax or discover the best light for photos during the golden hour in Ajax.

About Ajax

Located in the Durham Region of Ontario, Canada, the town of Ajax covers a total area of 67.0 square kilometres at an elevation of 90 metres. The municipality sits along the shoreline of Lake Ontario and recorded a population of 126,666 in 2021. The town includes the Ajax GO Station, which provides rail services, and the Ajax Public Library, a facility that functions as part of a wider library network. Another notable feature is St. Nedela Macedonian Orthodox Church. The area is also home to Pickering Beach, which fronts the lake.

AI-assisted description based on geographic data and editorial notes.