Which city has better air quality, Hilo or Visalia?
Hilo has better overall air quality with an average AQI of 30 ("Good") compared to Visalia's AQI of 90 ("Moderate"). That is a difference of 60 AQI points.
How does PM2.5 compare between Hilo and Visalia?
Hilo has a lower PM2.5 average at 5 μg/m³, while Visalia averages 17.2 μg/m³. The EPA annual standard is 12 μg/m³. Hilo meets the EPA standard while Visalia exceeds it.
Which city has more good air quality days, Hilo or Visalia?
Hilo has 86% good air quality days compared to 20% in Visalia. That means residents of Hilo enjoy clean air about 66 percentage points more often.
How does wildfire risk compare between Hilo and Visalia?
Hilo has a low wildfire risk while Visalia has a very high risk. Hilo may experience less wildfire smoke impact on air quality.
What are the primary pollutants in Hilo vs Visalia?
Hilo's primary pollutant is PM2.5 (ozone avg 22 ppb), while Visalia's is PM2.5 (ozone avg 60 ppb). Both cities share the same primary pollutant, though concentrations differ.