Peru, Illinois Weather
Solstice approaches — longest light. Day 86 of spring. Read this microseason across nine climate regions →
Peru weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 13Light Showers32%0.07″84°62°—
- SundayJun 14Showers43%0.24″71°58°-13°
- MondayJun 15Overcast——72°53°+1°
- TuesdayJun 16Light Showers47%0.02″75°55°+3°
- WednesdayJun 17Showers77%0.50″75°62°0°
- ThursdayJun 18Overcast77%—74°58°-1°
- FridayJun 19Clear10%—70°57°-4°
AQI 27 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.96 fine-to-coarse ratio and 5 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 6.9 µg/m³ (AQI 38) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- Wind
- light
- 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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 3:34 AM
- Moonset
- —
- In sign
- ♉︎ Taurus
Solstice approaches — longest light
Peru at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Prune spring-blooming shrubs after flowers fade.
15-Day Forecast — Peru
- Sat83°62°32%
- Sun71°58°43%
- Mon72°53°1%
- Tue75°55°47%
- Wed75°62°77%
- Thu74°58°77%
- Fri70°57°10%
- Sat75°55°21%
- Sun76°62°23%
- Mon72°54°28%
- Tue75°52°14%
- Wed81°64°17%
- Thu78°62°29%
- Fri68°55°30%
- Sat73°53°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 13, 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 — Peru
SPC has placed Peru in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe 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.
ZIP codes in Peru
- 61354