Waukegan, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Waukegan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain74%1.0″79°67°—
- SundayJul 5Overcast11%—75°64°-4°
- MondayJul 6Overcast——76°62°+1°
- TuesdayJul 7Overcast——81°59°+5°
- WednesdayJul 8Overcast15%—83°62°+2°
- ThursdayJul 9Showers50%0.01″77°64°-6°
- FridayJul 10Drizzle44%—76°62°-1°
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 ~84%) — 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
Waukegan at a glance
- Today vs. normal: 6°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.
ZIP codes: 60085, 60087
16-Day Forecast — Waukegan
- Sat79°67°74%
- Sun75°64°11%
- Mon76°62°3%
- Tue81°59°1%
- Wed83°62°15%
- Thu77°64°50%
- Fri76°62°44%
- Sat74°58°10%
- Sun77°55°9%
- Mon73°55°9%
- Tue80°57°9%
- Wed80°63°26%
- Thu84°64°16%
- Fri76°71°16%
- Sat80°62°20%
- Sun73°59°29%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Waukegan
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 — Waukegan
SPC includes Waukegan 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 Waukegan
- 60048
- 60087
- 60085
- 60079