Walnut, Illinois Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Walnut weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast12%—83°67°—
- MondayJul 6Overcast——82°64°-1°
- TuesdayJul 7Overcast——81°62°-1°
- WednesdayJul 8Overcast——82°66°+1°
- ThursdayJul 9T-storm w/ Hail41%1.1″82°68°0°
- FridayJul 10Thunderstorm37%0.01″78°67°-4°
- SaturdayJul 11Light Drizzle16%—82°68°+4°
AQI 20 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 6.0 µg/m³, PM10 at 6.2 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 6.0 µg/m³, PM10 at 6.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- 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
- 11:17 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Walnut at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- 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
- Sun83°67°12%
- Mon82°64°2%
- Tue81°62°3%
- Wed82°66°8%
- Thu82°68°41%
- Fri78°67°37%
- Sat82°68°16%
- Sun85°68°9%
- Mon89°70°5%
- Tue88°74°14%
- Wed74°61°9%
- Thu76°57°26%
- Fri81°60°17%
- Sat84°67°29%
- Sun86°72°29%
- Mon88°72°18%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 includes Walnut in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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