Round Lake, Illinois Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Round Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——74°50°—
- TuesdayJun 16Light Rain74%0.07″73°56°-1°
- WednesdayJun 17Thunderstorm89%0.87″72°50°-1°
- ThursdayJun 18Light Drizzle73%0.01″64°54°-8°
- FridayJun 19Overcast——66°49°+2°
- SaturdayJun 20Light Drizzle11%—68°52°+2°
- SundayJun 21Heavy Drizzle30%0.14″67°54°-1°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.1 µg/m³, PM10 at 6.3 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
PM × Wind × Precip
PM2.5 at 6.1 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- breezy
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:14 AM
- Moonset
- 8:49 PM
- In sign
- ♋︎ Cancer
Solstice approaches — longest light
Round Lake at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: April 30 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Round Lake
- Mon74°50°2%
- Tue73°56°74%
- Wed72°50°89%
- Thu64°54°73%
- Fri66°49°7%
- Sat68°52°11%
- Sun67°54°30%
- Mon67°51°30%
- Tue72°50°11%
- Wed76°54°19%
- Thu79°58°20%
- Fri86°68°23%
- Sat86°74°26%
- Sun87°75°28%
- Mon79°65°40%
- Tue82°64°48%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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
SPC has placed Round Lake in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3SLGTSlight Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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
- 60073