Air Quality · UV · Pollen

Air quality in Maryland

Maryland, United States · October 21 2026

1/6

Good

Air Quality · US EPA

1/6

Good

UV Index · max

4.1

Moderate

Pollen · dominant

Low

Ragweed

Air quality breakdown Good

US EPA 1/6 · UK DEFRA 1/10 · µg/m³.

PM2.5 4.3 µg/m³

PM10 4.3 µg/m³

O3 61 µg/m³

NO2 13 µg/m³

SO2 2.5 µg/m³

CO 196 µg/m³

Air quality is satisfactory - enjoy your usual outdoor activities.

Today's maximum UV is 4.1, now 0.

036811+

Seek shade near midday; sunscreen and a hat recommended.

Dominant allergen: Ragweed · 10 grains/m³.

Trees

no data

None

Grass

no data

None

Weeds

Ragweed · 10

Low

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