Tamms, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Tamms weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast15%—93°70°—
- SundayJul 5Rain23%0.23″89°71°-4°
- MondayJul 6T-storm w/ Hail33%—88°73°-1°
- TuesdayJul 7Overcast18%—89°70°+1°
- WednesdayJul 8Clear18%—90°67°+1°
- ThursdayJul 9Overcast19%—94°72°+4°
- FridayJul 10Light Drizzle43%0.01″90°75°-4°
AQI 50 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 49 now. With UV 7.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 51 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 49 now. With UV 7.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 51 around 1 PM.
- Present
- AQI 49
- UV peak
- 7.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) with a 0.92 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- 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
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Tamms at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: March 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62988
16-Day Forecast — Tamms
- Sat93°70°15%
- Sun89°71°23%
- Mon88°73°33%
- Tue89°70°18%
- Wed90°67°18%
- Thu94°72°19%
- Fri90°75°43%
- Sat88°71°27%
- Sun84°67°16%
- Mon80°59°10%
- Tue81°60°9%
- Wed85°64°7%
- Thu79°65°13%
- Fri79°68°13%
- Sat89°71°23%
- Sun91°73°17%
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 — Tamms
SPC has placed Tamms 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 Tamms
- 62988
- 62993