Worst air pollution Hillsboro Historic Business District - Hillsboro, Ohio, today and tomorrow
Today (20 September): Air quality in Hillsboro Historic Business District is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 32.9/100).
Tomorrow (21 September 2026): Air quality in Hillsboro Historic Business District is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 36.8/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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In Hillsboro Historic Business District, with vehicle traffic relatively low, dust from nearby fields and occasional burning are the bigger day-to-day factors. Vegetation about 200-300 meters from here provides a modest natural filter for airborne particulates. Short-term spikes can occur with unusual weather or nearby construction and traffic events. Broader regional monitoring generally reflects this same baseline, with small local variation.
Today - 20 September | Pollution peaks at 12:00
AQI:
Fair
32.9/100
PM2.5 (fine particles):
Good
19.2/100
PM10 (coarse particles):
Good
18.5/100
NO2 (nitrogen dioxide):
Good
18.5/100
O3 (ozone):
Fair
32.9/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
5.3/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 12:00
AQI:
Fair
36.8/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
15.4/100
NO2 (nitrogen dioxide):
Fair
34.3/100
O3 (ozone):
Fair
36.8/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
4.7/100
Other Landmarks in Hillsboro, Ohio
Frequently Asked Questions
Is air quality bad in Hillsboro Historic Business District right now?
On 20 September 2026, overall air quality in Hillsboro Historic Business District is fair. AQI is the main air quality indicator at 32.9/100. Pollution peaks around 12:00 PM (O3: 32.9/100).
Will air quality be worse tomorrow in Hillsboro Historic Business District?
On 21 September 2026, air quality conditions in Hillsboro Historic Business District will be similar to today, with AQI forecast at fair at 36.8/100. Pollution peaks around 12:00 PM (O3: 36.8/100).
When is air pollution at its worst in Hillsboro Historic Business District?
Particulate levels here tend to peak during the coldest months of the year, as rural heating sources add up under inversions that keep smoke from dispersing. As temperatures rise, ozone typically becomes the dominant summer issue around here, as heat and sunlight drive photochemical smog, occasionally worsened by drifting wildfire smoke. Air quality generally improves in spring and fall, when milder weather and steadier winds help disperse pollutants.
Are air quality levels in Hillsboro Historic Business District based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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