Knollwood, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Knollwood weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain77%0.81″81°68°—
- SundayJul 5Overcast11%—76°64°-5°
- MondayJul 6Overcast——78°64°+2°
- TuesdayJul 7Overcast——83°61°+5°
- WednesdayJul 8Overcast15%—85°65°+2°
- ThursdayJul 9Heavy Drizzle51%—74°67°-11°
- FridayJul 10Drizzle44%—76°64°+2°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 2 hours of recent rain — PM2.5 down to 12.3 µg/m³, PM10 to 13.6 µg/m³.
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 50. Overcast through the UV peak window (cloud cover ~73%) — afternoon ozone should stay flat.
- Present
- AQI 50
- UV peak
- 6.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 21
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 12.3 µg/m³, PM10 to 13.6 µg/m³.
- PM2.5/PM10
- 0.90
- Wind
- light
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 10:50 PM
- Moonset
- 9:55 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Knollwood at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Knollwood
- Sat81°68°77%
- Sun76°64°11%
- Mon78°64°3%
- Tue83°61°1%
- Wed85°65°15%
- Thu74°67°51%
- Fri76°64°44%
- Sat75°60°10%
- Sun78°58°9%
- Mon74°57°9%
- Tue82°60°9%
- Wed82°65°26%
- Thu86°66°16%
- Fri78°72°16%
- Sat82°66°20%
- Sun74°62°29%
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 — Knollwood
SPC includes Knollwood in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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 Knollwood
- 60044