Chestnut, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Chestnut weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle57%0.06″91°70°—
- SundayJul 5Overcast15%—83°70°-8°
- MondayJul 6Light Drizzle10%—83°67°0°
- TuesdayJul 7Clear——81°62°-2°
- WednesdayJul 8Light Drizzle——84°63°+3°
- ThursdayJul 9Thunderstorm42%—84°71°0°
- FridayJul 10Light Drizzle42%0.02″79°69°-5°
AQI 29 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 8.8 µg/m³, PM10 at 10.0 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 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 42 now. With UV 5.9 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 23 around 1 PM.
- Present
- AQI 42
- UV peak
- 5.9 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 8.8 µg/m³, PM10 at 10.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- 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
- 10:51 PM
- Moonset
- 10:03 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Chestnut at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62518
16-Day Forecast — Chestnut
- Sat91°70°57%
- Sun83°70°15%
- Mon83°67°10%
- Tue81°62°3%
- Wed84°63°4%
- Thu84°71°42%
- Fri79°69°42%
- Sat83°67°16%
- Sun72°58°6%
- Mon72°57°7%
- Tue77°60°13%
- Wed80°63°17%
- Thu82°65°23%
- Fri82°69°29%
- Sat86°71°16%
- Sun83°72°35%
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 — Chestnut
SPC has placed Chestnut in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Chestnut
- 62518