Carol Stream, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Carol Stream weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers83%0.54″81°69°—
- SundayJul 5Overcast19%—76°64°-5°
- MondayJul 6Overcast——81°65°+5°
- TuesdayJul 7Overcast——85°62°+4°
- WednesdayJul 8Overcast12%—82°63°-3°
- ThursdayJul 9Light Showers51%0.20″77°66°-5°
- FridayJul 10Overcast47%—83°64°+6°
AQI 46 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.2 µg/m³, PM10 at 8.6 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 31. Overcast through the UV peak window (cloud cover ~73%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 2.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 8.2 µg/m³, PM10 at 8.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- 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
- 10:50 PM
- Moonset
- 9:56 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Carol Stream at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: April 28 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 60188
16-Day Forecast — Carol Stream
- Sat81°69°83%
- Sun76°64°19%
- Mon81°65°2%
- Tue85°62°1%
- Wed82°63°12%
- Thu77°66°51%
- Fri83°64°47%
- Sat82°64°15%
- Sun69°60°8%
- Mon76°57°8%
- Tue81°62°7%
- Wed81°64°23%
- Thu85°66°16%
- Fri84°70°19%
- Sat87°70°19%
- Sun87°72°28%
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 — Carol Stream
SPC has placed Carol Stream 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 Carol Stream
- 60188
- 60116
- 60128
- 60197
- 60199