Round Lake Park, Illinois Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Round Lake Park weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle13%0.01″73°64°—
- MondayJul 6Partly Cloudy——78°62°+5°
- TuesdayJul 7Overcast——82°60°+4°
- WednesdayJul 8Overcast11%—83°65°+1°
- ThursdayJul 9T-storm w/ Hail54%—81°65°-2°
- FridayJul 10Overcast37%—77°61°-4°
- SaturdayJul 11Drizzle18%—80°64°+3°
AQI 38 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 50 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
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 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 50
- UV peak
- 5.3 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 50
PM × Wind × Precip
PM2.5 at 8.0 µg/m³, PM10 at 8.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.96
- Wind
- light
- 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
- 11:12 PM
- Moonset
- 11:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Round Lake Park at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Round Lake Park
- Sun74°64°13%
- Mon78°62°4%
- Tue82°60°0%
- Wed83°65°11%
- Thu81°65°54%
- Fri77°61°37%
- Sat80°64°18%
- Sun84°65°13%
- Mon74°57°7%
- Tue75°57°7%
- Wed79°56°10%
- Thu81°61°26%
- Fri83°64°27%
- Sat85°67°29%
- Sun87°65°27%
- Mon84°68°26%
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 — Round Lake Park
SPC includes Round Lake Park 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 Round Lake Park
- 60073
- 60030