South Jacksonville, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
South Jacksonville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast30%—92°72°—
- SundayJul 5Overcast15%—85°71°-7°
- MondayJul 6Light Drizzle——83°68°-2°
- TuesdayJul 7Clear——81°64°-2°
- WednesdayJul 8Overcast——87°64°+6°
- ThursdayJul 9Light Showers39%0.06″86°71°-1°
- FridayJul 10Light Showers39%0.05″83°71°-3°
AQI 27 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 9.3 µg/m³, PM10 at 10.5 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 during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 42. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 42
- UV peak
- 4.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 9.3 µg/m³, PM10 at 10.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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
- 10:55 PM
- Moonset
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
South Jacksonville at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — South Jacksonville
- Sat92°72°30%
- Sun85°71°15%
- Mon83°68°8%
- Tue81°64°4%
- Wed87°64°7%
- Thu86°71°39%
- Fri83°71°39%
- Sat84°69°21%
- Sun74°59°6%
- Mon75°57°5%
- Tue75°60°11%
- Wed79°63°10%
- Thu82°65°16%
- Fri81°68°23%
- Sat85°70°24%
- Sun86°72°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 — South Jacksonville
SPC has placed South Jacksonville 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 South Jacksonville
- 62650