Gillespie, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Gillespie weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast19%—92°71°—
- SundayJul 5Heavy Drizzle26%0.09″82°73°-10°
- MondayJul 6Light Drizzle——85°68°+3°
- TuesdayJul 7Overcast——83°65°-2°
- WednesdayJul 8Overcast15%—87°65°+4°
- ThursdayJul 9Light Drizzle39%0.01″89°71°+2°
- FridayJul 10Light Showers42%0.04″85°71°-4°
AQI 33 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.4 µg/m³, PM10 at 9.2 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 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 42
- UV peak
- 6.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 8.4 µg/m³, PM10 at 9.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- 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
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Gillespie at a glance
- Today vs. normal: 14°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.
ZIP code: 62033
16-Day Forecast — Gillespie
- Sat92°71°19%
- Sun82°73°26%
- Mon85°68°8%
- Tue83°65°6%
- Wed87°65°15%
- Thu89°71°39%
- Fri85°71°42%
- Sat85°72°26%
- Sun74°60°5%
- Mon73°57°5%
- Tue76°60°11%
- Wed80°63°13%
- Thu81°65°13%
- Fri82°68°16%
- Sat85°69°23%
- Sun86°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 — Gillespie
SPC has placed Gillespie 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 Gillespie
- 62033