The highest AQ index in Indiana (as of 12:00 CDT) is currently the Evansville area. Particle Pollution (PM2.5) is measuring at 55 (Moderate). This means air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Over the next few days, the highest Particle Pollution (PM2.5) will be in the Evansville area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Weather Analysis and Air Quality Forecasting Decisions: Ozone: Monitoring for ozone began March 1st but forecasting will begin when conditions become more favorable. Fine Particulate: Southern Indiana will see generally good to moderate air quality through midweek, with no anticipated near‑surface smoke or dust impacts and ozone remaining a low concern. Mixing heights are expected to reach around 4000 feet through midweek, supporting ample mixing. Tuesday begins with split flow aloft, keeping most daytime convection northwest of the region, although deeper storms are expected to form across Missouri and Illinois late in the day and expand southward. Shower and thunderstorm chances increase Tuesday night as this activity organizes and races northeast, with a few stronger storms and localized heavy rainfall possible, though the overall severe threat appears limited due to elevated storm structure. Temperatures remain unseasonably warm Tuesday and Wednesday with highs in the 70s. Widespread showers and storms are likely Wednesday into Wednesday night as deep moisture and stronger large‑scale lift move in ahead of an approaching cold front, bringing the potential for some severe storms and localized flooding. Much cooler, drier air arrives Thursday with highs falling into the upper 40s to low 50s under high pressure. Conditions moderate again Friday into the weekend as southwest flow redevelops. Regional Forecaster Initials: JW
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
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| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 7 minutes ago
Below is a list of counties in Indiana. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.