Air Quality · UV · Pollen

Air quality in Cook County

Illinois, United States · November 5 2026

1/6

Good

Air Quality · US EPA

1/6

Good

UV Index · max

1.2

Low

Pollen · dominant

Low

Ragweed

Air quality breakdown Good

US EPA 1/6 · UK DEFRA 1/10 · µg/m³.

PM2.5 4.6 µg/m³

PM10 4.6 µg/m³

O3 42 µg/m³

NO2 15 µg/m³

SO2 1.5 µg/m³

CO 153 µg/m³

Air quality is satisfactory - enjoy your usual outdoor activities.

Today's maximum UV is 1.2.

036811+

No protection needed for most people.

Dominant allergen: Ragweed · 1 grains/m³.

Trees

no data

None

Grass

no data

None

Weeds

Ragweed · 1

Low

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