Air Quality · UV · Pollen

Ontario

Ontario, Canada · 21 July 2026

0/6

Good

Air Quality · US EPA

0/6

Good

UV Index · max

High

Pollen · dominant

Moderate

Grass

Air quality breakdown Good

US EPA 1/6 · UK DEFRA 1/10 · µg/m³.

PM2.5 0 µg/m³

PM10 0 µg/m³

O3 0 µg/m³

NO2 0 µg/m³

SO2 0 µg/m³

CO 0 µg/m³

Air quality is satisfactory - enjoy your usual outdoor activities.

Today's maximum UV is 5.5, now 0.3.

036811+

Protection essential - SPF 30+, hat, sunglasses, shade 11am-4pm.

Dominant allergen: Grass · grains/m³.

Trees

no data

None

Grass

Grass · 32

Moderate

Weeds

Mugwort · 21

Moderate

Low to moderate pollen - most people are unaffected; the highly sensitive may notice mild symptoms.