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: 4:15 PM CDT  ·  Refresh
29°C
Feels like 34°
Mostly Cloudy
▲ 31°  /  ▼ 22°
Wind
10 mph W
Humidity
72%
Dew Point
24°
Pressure
29.17 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
66%
Sunrise
6:57 AM
Sunset
8:39 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Indianapolis is currently mostly cloudy at 30°C. Precipitation is likely — peak probability 72% around 5 AM. Atmospheric instability is elevated (CAPE up to 2456 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°
33%
6 PM
29°
47%
7 PM
29°
47%
8 PM
27°
43%
9 PM
27°
45%
10 PM
26°
45%
11 PM
25°
53%
12 AM
24°
53%
1 AM
24°
59%
2 AM
25°
59%
3 AM
24°
64%
4 AM
23°
70%
5 AM
23°
72%
6 AM
23°
63%
7 AM
23°
63%
8 AM
23°
53%
9 AM
23°
52%
10 AM
23°
57%
11 AM
23°
48%
12 PM
24°
48%
1 PM
24°
46%
2 PM
26°
46%
3 PM
26°
45%
4 PM
26°
35%
7-Day Forecast
Today
31° 22°
Mostly Cloudy with a 53% chance of rain.
Mon
28° 18°
Mostly Cloudy with a 72% chance of rain.
Tue
27° 16°
Mostly Clear with a 29% chance of rain.
Wed
27° 18°
Mostly Cloudy with a 74% chance of rain.
Thu
23° 16°
Clear with a 60% chance of rain.
Fri
23° 14°
Drizzle, 43% chance.
Sat
24° 13°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 33% 10 mph W 72%
6 PM 29° Mostly Cloudy 47% 8 mph W 80%
7 PM 29° Mostly Cloudy 47% 6 mph W 84%
8 PM 27° Mostly Cloudy 43% 4 mph W 88%
9 PM 27° Mostly Cloudy 45% 4 mph WNW 92%
10 PM 26° Partly Cloudy 45% 4 mph WNW 94%
11 PM 25° Partly Cloudy 53% 4 mph WNW 96%
12 AM 24° Partly Cloudy 53% 4 mph WNW 97%
1 AM 24° Overcast 59% 3 mph W 97%
2 AM 25° Overcast 59% 3 mph W 97%
3 AM 24° Overcast 64% 4 mph WSW 95%
4 AM 23° Overcast 70% 5 mph WSW 92%
5 AM 23° Overcast 72% 6 mph WSW 91%
6 AM 23° Overcast 63% 5 mph WSW 91%
7 AM 23° Overcast 63% 4 mph WSW 92%
8 AM 23° Overcast 53% 4 mph WSW 92%
9 AM 23° Overcast 52% 5 mph WSW 92%
10 AM 23° Overcast 57% 5 mph W 92%
11 AM 23° Overcast 48% 4 mph W 91%
12 PM 24° Overcast 48% 5 mph WNW 87%
1 PM 24° Rain 46% 5 mph WNW 84%
2 PM 26° Rain 46% 5 mph WNW 81%
3 PM 26° Mostly Cloudy 45% 6 mph NW 80%
4 PM 26° Mostly Cloudy 35% 7 mph NNW 80%
15-Day Forecast
Today
8/16
Mostly Cloudy
53%
22°
31°
Mon
8/17
Mostly Cloudy
72%
18°
28°
Tue
8/18
Mostly Clear
29%
16°
27°
Wed
8/19
Mostly Cloudy
74%
18°
27°
Thu
8/20
Clear
60%
16°
23°
Fri
8/21
Drizzle
43%
14°
23°
Sat
8/22
Clear
18%
13°
24°
Sun
8/23
Clear
60%
16°
25°
Mon
8/24
Drizzle
60%
11°
26°
Tue
8/25
Drizzle
60%
15°
27°
Wed
8/26
Drizzle
60%
16°
26°
Thu
8/27
Drizzle
60%
17°
26°
Fri
8/28
Clear
60%
16°
25°
Sat
8/29
Drizzle
60%
16°
25°
Sun
8/30
Clear
60%
16°
25°
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, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2727 J/kg
MLCAPE2238 J/kg
MUCAPE2727 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index-5.9
Kinematics
0–6 km Shear15 kt
0–1 km Shear12 kt
Eff. Shear15 kt
0–1 km SRH46
0–3 km SRH84
Eff. SRH84
Storm Motion312° @ 27 kt
0–1 km EHI0.8
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.8
Thermo & Levels
PWAT2.36 in
0–3 km LR6.6 °C/km
700–500 LR5.7 °C/km
Total Totals46.8
LCL904 hPa
LFC988 hPa
EL147 hPa
Freezing Lvl15,607 ft