Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Flood Warning — Marion County, IN 1:44 AM Flood Warning — Marion County, IN, Morgan County, IN 5:30 AM Flood Warning — Marion County, IN, Morgan County, IN 9:24 AM Flood Warning — Hamilton County, IN, Marion County, IN 5:00 PM Flood Warning — Marion County, IN, Morgan County, IN 1:00 AM

Indianapolis, Indiana

Last updated: 5:28 PM CDT  ·  Refresh
29°C
Feels like 34°
Mostly Cloudy
▲ 30°  /  ▼ 22°
Wind
8 mph W
Humidity
79%
Dew Point
24°
Pressure
29.16 inHg
Visibility
7 mi
UV Index
3.9
Cloud Cover
69%
Sunrise
6:57 AM
Sunset
8:39 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Indianapolis is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 71% around 5 AM. Atmospheric instability is elevated (CAPE up to 2582 J/kg) — isolated convective development possible. Sunrise: 6:57AM · Sunset: 8:39PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Flood Warning
Marion County, IN
Expires 1:44 AM
Flood Warning
Marion County, IN, Morgan County, IN
Expires 5:30 AM
Flood Warning
Marion County, IN, Morgan County, IN
Expires 9:24 AM
Flood Warning
Hamilton County, IN, Marion County, IN
Expires 5:00 PM
Flood Warning
Marion County, IN, Morgan County, IN
Expires 1:00 AM
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
43%
7 PM
28°
46%
8 PM
27°
45%
9 PM
26°
46%
10 PM
26°
46%
11 PM
24°
53%
12 AM
24°
53%
1 AM
24°
58%
2 AM
24°
59%
3 AM
24°
59%
4 AM
23°
48%
5 AM
23°
71%
6 AM
23°
53%
7 AM
23°
66%
8 AM
23°
48%
9 AM
23°
43%
10 AM
23°
49%
11 AM
24°
41%
12 PM
25°
41%
1 PM
26°
40%
2 PM
27°
40%
3 PM
27°
40%
4 PM
27°
28%
5 PM
26°
23%
7-Day Forecast
Tonight
30° 22°
Mostly Cloudy with a 46% chance of rain.
Mon
29° 18°
Mostly Cloudy with a 59% chance of rain.
Tue
27° 17°
Partly Cloudy.
Wed
26° 19°
Mostly Cloudy with a 72% chance of rain.
Thu
24° 15°
Mostly Cloudy with a 56% chance of rain.
Fri
23° 14°
Clear with a 38% chance of rain.
Sat
25° 14°
Mostly Clear with a 23% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 43% 8 mph W 79%
7 PM 28° Mostly Cloudy 46% 6 mph WSW 86%
8 PM 27° Mostly Cloudy 45% 5 mph W 89%
9 PM 26° Mostly Cloudy 46% 4 mph W 92%
10 PM 26° Partly Cloudy 46% 4 mph WNW 94%
11 PM 24° Partly Cloudy 53% 4 mph WNW 96%
12 AM 24° Partly Cloudy 53% 3 mph WNW 97%
1 AM 24° Mostly Cloudy 58% 3 mph W 97%
2 AM 24° Overcast 59% 4 mph W 96%
3 AM 24° Overcast 59% 4 mph WSW 94%
4 AM 23° Overcast 48% 5 mph WSW 92%
5 AM 23° Overcast 71% 5 mph WSW 91%
6 AM 23° Overcast 53% 4 mph WSW 91%
7 AM 23° Overcast 66% 4 mph WSW 92%
8 AM 23° Overcast 48% 4 mph W 92%
9 AM 23° Overcast 43% 4 mph W 92%
10 AM 23° Overcast 49% 4 mph WNW 93%
11 AM 24° Overcast 41% 4 mph NW 90%
12 PM 25° Mostly Cloudy 41% 5 mph NW 85%
1 PM 26° Rain 40% 6 mph NW 80%
2 PM 27° Rain 40% 6 mph NNW 78%
3 PM 27° Mostly Cloudy 40% 7 mph NNW 77%
4 PM 27° Partly Cloudy 28% 8 mph NNW 77%
5 PM 26° Partly Cloudy 23% 8 mph NNW 77%
15-Day Forecast
Today
8/16
Mostly Cloudy
46%
22°
30°
Mon
8/17
Mostly Cloudy
59%
18°
29°
Tue
8/18
Partly Cloudy
6%
17°
27°
Wed
8/19
Mostly Cloudy
72%
19°
26°
Thu
8/20
Mostly Cloudy
56%
15°
24°
Fri
8/21
Clear
38%
14°
23°
Sat
8/22
Mostly Clear
23%
14°
25°
Sun
8/23
Mostly Clear
25%
17°
26°
Mon
8/24
Drizzle
60%
14°
27°
Tue
8/25
Drizzle
60%
16°
28°
Wed
8/26
Drizzle
60%
16°
27°
Thu
8/27
Drizzle
60%
16°
26°
Fri
8/28
Clear
25%
16°
26°
Sat
8/29
Drizzle
60%
16°
26°
Sun
8/30
Clear
60%
16°
26°
38
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
38 AQI 6.8 µg/m³
O3
Ground-level ozone
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 38 Good 32 38
Tue 50 Good 35 50
Wed 38 Good 38 36
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Aug 16, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3130 J/kg
MLCAPE2507 J/kg
MUCAPE3130 J/kg
SBCIN-2 J/kg
MLCIN-1 J/kg
Lifted Index-7.0
Kinematics
0–6 km Shear16 kt
0–1 km Shear14 kt
Eff. Shear17 kt
0–1 km SRH67
0–3 km SRH127
Eff. SRH127
Storm Motion316° @ 32 kt
0–1 km EHI1.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.7
Thermo & Levels
PWAT2.33 in
0–3 km LR6.1 °C/km
700–500 LR6.1 °C/km
Total Totals47.8
LCL925 hPa
LFC915 hPa
EL143 hPa
Freezing Lvl15,240 ft