Today | Weather | Wednesday, August 12, 2026

Active Weather Warnings

Flood Watch

Weather in Indianapolis, Indiana

07:15 AM

Now

70° F

Feels Like 73°

Precipitation 39 %

Wind 5 mph

UV Index (0 - 11+) 1

Humidity 97 %

Today

Day 86°

Night 70°

Precipitation 98 %

Wind 9 mph

UV Index (0 - 11+) 7

Indianapolis Weather Forecast Updated

45 minutes ago

Last updated on August 12, 2026 at 6:29 AM

Air Quality in Indianapolis

NOW

22 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 5.39 µg/m³

PM₁₀ 5.62 µg/m³

O₃ 0.021 ppm

NO₂ 1.6 ppb

SO₂ 1 ppb

CO 0.10 ppm

NH₃ 0.27 µg/m³

NO 0 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 5.39 µg/m³

PM₁₀ – 5.62 µg/m³

O₃ – 41.27 µg/m³

NO₂ – 2.93 µg/m³

SO₂ – 2.53 µg/m³

CO – 119.36 µg/m³

NH₃ – 0.27 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Indianapolis

Severe Future Possible

Flood Watch

Flood Watch issued August 12 at 5:38AM EDT until August 13 at 12:00AM EDT by NWS Indianapolis IN

Aug 12, 5:38 AM → Aug 13, 12:00 AM

WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Much of central Indiana

WHEN: Through this evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

ADDITIONAL DETAILS:
- Flash Flooding is ongoing across portions of the watch with
continued and additional flash flooding likely due to
additional storms today.
- http://www.weather.gov/safety/flood

+ Read More

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Updated: Aug 12, 6:29 AM Source: NWS Alert