Air Quality · UV · Pollen

Hiroshima-shi

Hiroshima, Japan · 11 September 2026

0/6

Moderate

Air Quality · US EPA

0/6

Moderate

UV Index · max

Moderate

Pollen · dominant

Moderate

Ragweed

Air quality breakdown Moderate

US EPA 2/6 · UK DEFRA 2/10 · 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

Acceptable for most; unusually sensitive people should watch for symptoms.

Today's maximum UV is 5, now 2.7.

036811+

Seek shade near midday; sunscreen and a hat recommended.

Dominant allergen: Ragweed · grains/m³.

Trees

no data

None

Grass

Grass · 0

Low

Weeds

Ragweed · 21

Moderate

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