Corunna, Indiana Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Corunna weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——85°53°—
- FridayJun 5Overcast31%—85°62°0°
- SaturdayJun 6Rain78%0.10″78°66°-7°
- SundayJun 7Light Drizzle19%—82°65°+4°
- MondayJun 8Heavy Drizzle23%—78°63°-4°
- TuesdayJun 9Overcast31%—75°65°-3°
- WednesdayJun 10Light Drizzle20%—74°65°-1°
Ozone at AQI 91 now. AQI up 11 over the last 6 hours (gradual rise). With UV 8.6 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 74 by mid-afternoon.
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 91 now. With UV 8.6 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 74 by mid-afternoon.
- Present
- AQI 91
- UV peak
- 8.6 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 74
PM × Wind × Precip
PM2.5 at 5.0 µg/m³, PM10 at 5.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.85
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:14 AM
- Moonset
- 1:37 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Corunna at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Corunna
SPC has placed Corunna in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.