Zionsville, Indiana Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Zionsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain50%0.11″88°72°—
- SundayJul 5Overcast20%—83°70°-5°
- MondayJul 6Thunderstorm24%—75°67°-8°
- TuesdayJul 7Clear——79°59°+4°
- WednesdayJul 8Overcast——82°62°+3°
- ThursdayJul 9T-storm w/ Hail42%0.02″82°70°0°
- FridayJul 10Light Drizzle45%—83°71°+1°
AQI 42 (Good), driven by Ozone. AQI up 7 over the last 6 hours (gradual rise). Ozone at AQI 90 now. With UV 8.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 103 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 90 now. With UV 8.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 103 around 1 PM.
- Present
- AQI 90
- UV peak
- 8.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 103
PM × Wind × Precip
PM2.5 at 11.5 µg/m³, PM10 at 12.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:40 PM
- Moonset
- 10:51 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Zionsville at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 46077
16-Day Forecast — Zionsville
- Sat88°72°50%
- Sun83°70°20%
- Mon75°67°24%
- Tue79°59°5%
- Wed82°62°7%
- Thu82°70°42%
- Fri83°71°45%
- Sat75°63°25%
- Sun72°55°12%
- Mon74°57°14%
- Tue74°55°13%
- Wed78°60°26%
- Thu81°60°20%
- Fri83°67°29%
- Sat76°69°26%
- Sun73°66°48%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Zionsville
SPC has placed Zionsville in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Zionsville
- 46052
- 46077
- 46075