Petersburg, Indiana Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Petersburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast28%—90°71°—
- SundayJul 5Overcast37%—85°72°-5°
- MondayJul 6Mostly Clear48%—81°64°-4°
- TuesdayJul 7Clear33%—81°62°0°
- WednesdayJul 8Clear27%—84°65°+3°
- ThursdayJul 9Thunderstorm35%0.04″83°70°-1°
- FridayJul 10Heavy Drizzle50%—83°68°0°
AQI 54 (Moderate), driven by PM2.5. AQI down 22 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.6 µg/m³ (AQI 52) with a 0.88 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 9.6 µg/m³ (AQI 52) with a 0.88 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:42 PM
- Moonset
- 10:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Petersburg at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 47567
15-Day Forecast — Petersburg
- Sat90°71°28%
- Sun85°72°37%
- Mon81°64°48%
- Tue81°62°33%
- Wed84°65°27%
- Thu83°70°35%
- Fri83°68°50%
- Sat87°70°39%
- Sun83°69°14%
- Mon91°70°9%
- Tue81°66°8%
- Wed79°60°13%
- Thu82°62°23%
- Fri87°70°23%
- Sat84°69°19%
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 — Petersburg
SPC has placed Petersburg in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in Petersburg
- 47567