Carthage, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Carthage weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast20%—86°70°—
- SundayJul 5Light Drizzle23%0.02″85°69°-1°
- MondayJul 6Overcast——83°66°-2°
- TuesdayJul 7Clear——81°63°-2°
- WednesdayJul 8Overcast11%—87°64°+6°
- ThursdayJul 9Drizzle25%—85°71°-2°
- FridayJul 10Light Drizzle23%—84°70°-1°
AQI 27 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.90 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 33 now. With UV 2.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 12 around 1 PM.
- Present
- AQI 33
- UV peak
- 2.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.90 fine-to-coarse ratio and 5 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
- 10:59 PM
- Moonset
- 10:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Carthage at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62321
16-Day Forecast — Carthage
- Sat86°70°20%
- Sun85°69°23%
- Mon83°66°6%
- Tue81°63°5%
- Wed87°64°11%
- Thu85°71°25%
- Fri84°70°23%
- Sat84°68°20%
- Sun72°58°11%
- Mon75°57°6%
- Tue79°60°6%
- Wed81°65°16%
- Thu82°65°16%
- Fri82°68°19%
- Sat84°70°13%
- Sun88°72°13%
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 — Carthage
SPC has placed Carthage in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Carthage
- 62321