Indianapolis

Indianapolis to Bask in Sunsational Heat Wave with Air Quality Alert in Effect Amid Elevated Fire Weather Risk

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Published on September 18, 2025
Indianapolis to Bask in Sunsational Heat Wave with Air Quality Alert in Effect Amid Elevated Fire Weather RiskSource: Google Street View

Indianapolis will experience sunny skies and high temperatures near 90 degrees today. Patchy fog will clear before 8 a.m., with calm conditions expected throughout the day. Tonight will be mostly clear with a low around 63 degrees, as per the National Weather Service

Friday is expected to remain calm with temperatures reaching near 91 degrees. Saturday’s forecast calls for partly sunny skies with highs near 89 degrees. On Sunday, a slight chance of showers is expected in the afternoon, increasing to showers and thunderstorms by night. From Sunday through midweek, there is a continuing chance of showers and occasional thunderstorms, which may include lightning.

An Air Quality Alert is in effect until midnight EDT tonight due to expected high ozone levels that may be unhealthy for sensitive groups. The Indiana Department of Environmental Management advises children, adults, and people with respiratory conditions to limit extended outdoor activities. Recommended actions include reducing vehicle use, combining errands, and postponing gasoline-powered equipment use until later in the day.

Dry conditions and high temperatures have also prompted a marginal elevated fire weather risk through Saturday afternoon. While winds are light, the combination of low humidity and dry ground requires caution regarding potential fire hazards.