Willow Springs, Illinois Weather
Night falls a minute earlier. Day 43 of summer. Read this microseason across nine climate regions →
Willow Springs weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Overcast——75°66°—
- MondayAug 3Mostly Clear——79°62°+4°
- TuesdayAug 4Overcast——84°63°+5°
- WednesdayAug 5Overcast57%—85°66°+1°
- ThursdayAug 6Light Showers59%0.30″78°68°-7°
- FridayAug 7Light Drizzle——86°64°+8°
- SaturdayAug 8Light Drizzle14%—91°72°+5°
AQI 66 (Moderate), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 15.1 µg/m³, PM10 at 15.6 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 3.2 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12.
- Present
- AQI 40
- UV peak
- 3.2 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 15.1 µg/m³, PM10 at 15.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- breezy
- 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).
Red sky at night, sailor's delight.
- Moonrise
- 9:36 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Night falls a minute earlier
Willow Springs at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 26 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP code: 60480
16-Day Forecast — Willow Springs
- Sun75°66°2%
- Mon79°62°0%
- Tue84°63°1%
- Wed85°66°57%
- Thu78°68°59%
- Fri86°64°9%
- Sat91°72°14%
- Sun94°75°24%
- Mon79°69°24%
- Tue83°68°30%
- Wed90°72°25%
- Thu92°71°31%
- Fri93°74°26%
- Sat89°75°26%
- Sun87°69°27%
- Mon85°69°26%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of August 2, 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.
Sun & seasons in Willow Springs
Willow Springs sits in Cook County, where the year’s longest day runs 15h 13m of daylight and its shortest just 9h 9m — a swing of +6h 4m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Chicago, the state’s largest city, lies about 13 miles to the NE. The nearest town Willow Springs tracks is Chicago, roughly 13 miles to the NE.
Air quality in Willow Springs’s county has trended cleaner since 2020; its cleanest year on record was 2025 (median AQI 53). See the full air-quality history for Willow Springs.
ZIP codes in Willow Springs
- 60480
- 60439