Carol Stream, Illinois Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Carol Stream weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast17%—75°65°—
- MondayJul 6Mostly Clear——77°62°+2°
- TuesdayJul 7Overcast——83°61°+6°
- WednesdayJul 8Overcast——83°67°0°
- ThursdayJul 9Thunderstorm55%0.09″83°69°0°
- FridayJul 10Light Drizzle52%—85°67°+2°
- SaturdayJul 11Light Drizzle21%0.04″84°68°-1°
AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.7 µg/m³ (AQI 54) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
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 42. Overcast through the UV peak window (cloud cover ~93%) — afternoon ozone should stay flat.
- Present
- AQI 42
- UV peak
- 3.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 10.7 µg/m³ (AQI 54) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:12 PM
- Moonset
- 11:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Carol Stream at a glance
- Today vs. normal: 71°F — typical for the season
- 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
- Sun75°65°17%
- Mon77°62°3%
- Tue83°61°0%
- Wed83°67°7%
- Thu83°69°55%
- Fri85°67°52%
- Sat84°68°21%
- Sun85°69°13%
- Mon88°69°8%
- Tue89°72°7%
- Wed76°63°11%
- Thu79°60°15%
- Fri82°62°16%
- Sat86°68°16%
- Sun88°71°17%
- Mon88°71°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 includes Carol Stream in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Carol Stream
- 60188
- 60116
- 60128
- 60197
- 60199