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The area with the highest AQ Index (as of 18:00 EST) in is in the Pittsburgh area. Ozone (OZONE) is measuring at 36 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.
Over the next few days, the highest primary air pollutant will be Particle Pollution (PM2.5) in the Pittsburgh area. It is forecasted to be 54 (Moderate), meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Below is a clickable map of Butler County, Pennsylvania. The markers on the map identify large, populated cities. If you hover over a marker, it will display the city name and the current AQ index. The color of the city markers also references the current AQ risk level.
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
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Below is a list of cities in Butler County where we track and forecast the AQ index. Click on a city name to get the current AQ index as well as any available forcasts.