Big Rock, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Big Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle87%0.05″83°70°—
- SundayJul 5Overcast20%—80°65°-3°
- MondayJul 6Overcast——80°62°0°
- TuesdayJul 7Overcast——81°58°+1°
- WednesdayJul 8Overcast10%—80°61°-1°
- ThursdayJul 9Thunderstorm54%0.15″77°65°-3°
- FridayJul 10Overcast43%—81°62°+4°
AQI 30 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 6.8 µg/m³, PM10 at 7.4 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 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~79%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 2.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM2.5 at 6.8 µg/m³, PM10 at 7.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- 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
- 10:51 PM
- Moonset
- 9:58 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Big Rock at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: April 27 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 60511
16-Day Forecast — Big Rock
- Sat83°70°87%
- Sun80°65°20%
- Mon80°62°3%
- Tue81°58°1%
- Wed80°61°10%
- Thu77°65°54%
- Fri81°62°43%
- Sat81°62°15%
- Sun68°58°7%
- Mon74°56°8%
- Tue79°59°8%
- Wed79°61°26%
- Thu82°65°19%
- Fri83°69°26%
- Sat85°70°21%
- Sun83°70°32%
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 — Big Rock
SPC has placed Big Rock 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 Big Rock
- 60554
- 60511