What Is the Air Quality in Harrison, Ohio?

Harrison, Ohio earns a B — air quality is reliably in the safe range for most residents most of the time, with a 5-year median AQI of 10. Sensitive groups will see occasional caution days, but the typical resident will not need to change behavior based on air quality.

Harrison, Ohio's 5-year median AQI of 10 is 31 points below the national average of 41 — meaningfully cleaner than the typical U.S. metro tracked here. Within Ohio, Harrison, Ohio runs cleaner than the state average of 40 — a positive signal that local conditions (terrain, wind patterns, emission sources) are working in residents' favor.

For context within Ohio: Columbiana, Ohio currently holds the state's cleanest grade (A, AQI 12), while Butler, Ohio sits at the bottom (D, AQI 50).

Air quality in Harrison, Ohio has been getting worse over the past decade, with median AQI climbing by roughly 6.3 points per year. That bucks the national trend of broad improvement, and most often reflects either growing wildfire smoke exposure (particularly across the West) or rising local emissions from population and freight growth.

In 2018, Harrison, Ohio posted a median AQI of 3. By 2022 that figure was 33 — a rise of 30 AQI points dirtier across 5 years of EPA records.

Across the past five years, this area has logged just 0 days where AQI rose into the "Unhealthy for Sensitive Groups" range or worse — about 0 days per year, or roughly one every other month. That is a low count by national standards.

For most healthy adults, current air quality in this area does not require any change in behavior. People with severe asthma, COPD, or recent cardiac events should still keep an eye on daily AQI alerts, especially during wildfire season. Day-to-day exposure can vary significantly within a single metro — sign up for AirNow.gov alerts at your specific zip code rather than relying on the city-level number.