Sparta, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Sparta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain32%0.17″94°72°—
- SundayJul 5Heavy Rain30%0.82″84°72°-10°
- MondayJul 6Overcast30%—88°70°+4°
- TuesdayJul 7Overcast10%—87°69°-1°
- WednesdayJul 8Overcast11%—91°67°+4°
- ThursdayJul 9Overcast24%—96°72°+5°
- FridayJul 10Thunderstorm40%0.06″90°73°-6°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.9 µg/m³, PM10 at 8.8 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 39 now. With UV 5.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 30 around 1 PM.
- Present
- AQI 39
- UV peak
- 5.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 30
PM × Wind × Precip
PM2.5 at 7.9 µg/m³, PM10 at 8.8 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
- 10:51 PM
- Moonset
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Sparta at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62286
16-Day Forecast — Sparta
- Sat94°72°32%
- Sun84°72°30%
- Mon88°70°30%
- Tue87°69°10%
- Wed91°67°11%
- Thu96°72°24%
- Fri90°73°40%
- Sat94°71°23%
- Sun81°64°16%
- Mon78°59°7%
- Tue80°60°9%
- Wed85°64°8%
- Thu80°65°11%
- Fri81°68°10%
- Sat88°70°17%
- Sun93°73°26%
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 — Sparta
SPC has placed Sparta 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 Sparta
- 62286