Royalton, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Royalton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain31%0.18″96°72°—
- SundayJul 5Heavy Drizzle30%0.09″88°73°-8°
- MondayJul 6Overcast24%—90°71°+2°
- TuesdayJul 7Overcast14%—87°69°-3°
- WednesdayJul 8Mostly Clear16%—90°66°+3°
- ThursdayJul 9Overcast26%—94°74°+4°
- FridayJul 10Heavy Drizzle38%0.15″90°73°-4°
AQI 51 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 41 now. With UV 5.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 28 around 1 PM.
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 41 now. With UV 5.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 28 around 1 PM.
- Present
- AQI 41
- UV peak
- 5.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 28
PM × Wind × Precip
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.90 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 10:48 PM
- Moonset
- 10:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Royalton at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62983
16-Day Forecast — Royalton
- Sat96°72°31%
- Sun88°73°30%
- Mon90°71°24%
- Tue87°69°14%
- Wed90°66°16%
- Thu94°74°26%
- Fri90°73°38%
- Sat92°71°29%
- Sun80°65°14%
- Mon77°59°7%
- Tue80°60°10%
- Wed87°64°5%
- Thu84°65°13%
- Fri83°69°11%
- Sat84°71°19%
- Sun91°73°23%
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 — Royalton
SPC has placed Royalton 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 Royalton
- 62983