Lake Barrington, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lake Barrington weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain74%0.89″82°68°—
- SundayJul 5Overcast17%—79°64°-3°
- MondayJul 6Overcast——78°61°-1°
- TuesdayJul 7Overcast——81°59°+3°
- WednesdayJul 8Overcast14%—82°60°+1°
- ThursdayJul 9Light Drizzle48%0.04″77°64°-5°
- FridayJul 10Overcast43%—79°62°+2°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.6 µg/m³, PM10 at 7.4 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 35. Overcast through the UV peak window (cloud cover ~66%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 3.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 6.6 µg/m³, PM10 at 7.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:51 PM
- Moonset
- 9:56 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lake Barrington at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 29 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Lake Barrington
- Sat82°68°74%
- Sun79°64°17%
- Mon78°61°1%
- Tue81°59°0%
- Wed82°60°14%
- Thu77°64°48%
- Fri79°62°43%
- Sat82°61°11%
- Sun67°59°8%
- Mon75°56°8%
- Tue78°60°8%
- Wed81°64°23%
- Thu84°66°16%
- Fri85°68°19%
- Sat87°69°19%
- Sun87°70°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 — Lake Barrington
SPC includes Lake Barrington 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 Lake Barrington
- 60010