Walnut, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Walnut weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain60%0.21″84°69°—
- SundayJul 5Foggy18%—82°66°-2°
- MondayJul 6Mostly Clear——81°62°-1°
- TuesdayJul 7Overcast——79°58°-2°
- WednesdayJul 8Overcast22%—82°63°+3°
- ThursdayJul 9Drizzle31%—79°67°-3°
- FridayJul 10Overcast31%—81°64°+2°
AQI 23 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 4.8 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 8 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 4.8 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- Wind
- calm
- Recent rain
- 1h 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
- 10:55 PM
- Moonset
- 10:03 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Walnut at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61376
16-Day Forecast — Walnut
- Sat83°69°60%
- Sun82°66°18%
- Mon81°62°3%
- Tue79°58°4%
- Wed82°63°22%
- Thu79°67°31%
- Fri81°64°31%
- Sat82°65°14%
- Sun67°58°9%
- Mon72°55°9%
- Tue75°60°12%
- Wed79°62°29%
- Thu82°66°18%
- Fri83°68°29%
- Sat85°70°23%
- Sun85°71°39%
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 — Walnut
SPC has placed Walnut in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Walnut
- 61376