What is the air quality like in Hilo?
Hilo has an average AQI of 30, which falls in the "Good" category. About 86% of days have Good air quality, 10% are Moderate, and 3% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Hilo?
The primary pollutant in Hilo is PM2.5. The city's average PM2.5 level is 5 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 22 ppb. Major pollution sources include volcanic emissions, vehicles.
Is Hilo affected by wildfire smoke?
Hilo has a low wildfire risk rating. Wildfire smoke rarely impacts air quality here.
How many good air quality days does Hilo have?
Approximately 86% of days in Hilo have Good air quality (AQI 0-50). This means the majority of the year has clean, breathable air.
When is pollen season in Hilo's state (HI)?
Pollen seasons in HI include: Tree Pollen (Year-round–Year-round, Low severity); Grass Pollen (Year-round–Year-round, Moderate severity); Weed Pollen (Year-round–Year-round, Low severity); Mold Spores (Year-round–Year-round, High severity). Allergy sufferers should monitor pollen counts during these periods and consider staying indoors on high-pollen days, especially during morning hours when counts peak.