Big Rock, Illinois Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Big Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——74°52°—
- TuesdayJun 16Thunderstorm28%—71°56°-3°
- WednesdayJun 17T-storm w/ Hvy Hail96%0.46″75°52°+4°
- ThursdayJun 18Light Drizzle72%—67°55°-8°
- FridayJun 19Overcast——69°55°+2°
- SaturdayJun 20Overcast19%—68°52°-1°
- SundayJun 21Light Drizzle40%0.08″67°59°-1°
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 48 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 48 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 48
- UV peak
- 4.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 48
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:19 AM
- Moonset
- 8:48 PM
- In sign
- ♋︎ Cancer
Solstice approaches — longest light
Big Rock at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: April 27 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Big Rock
- Mon74°52°2%
- Tue71°57°28%
- Wed75°52°96%
- Thu67°55°72%
- Fri69°55°5%
- Sat68°52°19%
- Sun67°59°40%
- Mon64°61°39%
- Tue67°58°13%
- Wed75°57°8%
- Thu76°59°11%
- Fri76°57°16%
- Sat68°58°32%
- Sun74°61°35%
- Mon75°60°26%
- Tue69°57°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 Enhanced Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3ENHEnhanced Risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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