Royal Lakes, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Royal Lakes weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast20%—92°72°—
- SundayJul 5Light Showers22%0.07″83°73°-9°
- MondayJul 6Light Drizzle——84°69°+1°
- TuesdayJul 7Overcast——83°65°-1°
- WednesdayJul 8Overcast14%—88°65°+5°
- ThursdayJul 9Light Drizzle40%0.01″89°72°+1°
- FridayJul 10Light Showers42%0.06″86°71°-3°
AQI 33 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.8 µg/m³, PM10 at 9.8 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 43 now. With UV 6.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 24 around 1 PM.
- Present
- AQI 43
- UV peak
- 6.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 24
PM × Wind × Precip
PM2.5 at 8.8 µg/m³, PM10 at 9.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.90
- 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
- 10:53 PM
- Moonset
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Royal Lakes at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Royal Lakes
- Sat92°72°20%
- Sun83°73°22%
- Mon84°69°6%
- Tue83°65°6%
- Wed88°65°14%
- Thu89°72°40%
- Fri86°71°42%
- Sat85°72°26%
- Sun75°60°6%
- Mon73°57°5%
- Tue76°60°11%
- Wed79°63°13%
- Thu81°65°13%
- Fri82°68°16%
- Sat85°69°23%
- Sun87°72°16%
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 — Royal Lakes
SPC has placed Royal Lakes in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Royal Lakes
- 62685