Air Quality · UV · Pollen

St. Louis

Missouri, United States · 30 July 2026

0/6

Good

Air Quality · US EPA

0/6

Good

UV Index · max

Very High

Pollen · dominant

Very High

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 10.7, now 10.1.

036811+

Take extra care - unprotected skin can burn quickly.

Dominant allergen: Grass · grains/m³.

Trees

no data

None

Grass

Grass · 203

Very High

Weeds

no data

None

High pollen - allergy sufferers should keep windows closed midday, shower after time outdoors, and consider antihistamines.