Tamms, Illinois Weather
Heat settles and the rain begins. Day 89 of spring. Read this microseason across nine climate regions →
Tamms weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——78°59°—
- TuesdayJun 16Overcast17%—84°62°+6°
- WednesdayJun 17Thunderstorm——86°63°+2°
- ThursdayJun 18T-storm w/ Hail61%0.07″84°67°-2°
- FridayJun 19Drizzle58%0.02″79°63°-5°
- SaturdayJun 20Overcast——82°61°+3°
- SundayJun 21Thunderstorm39%—82°64°0°
AQI 49 (Good), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 43 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 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 43 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 around 1 PM.
- Present
- AQI 43
- UV peak
- 0.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 10
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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 6:51 AM
- Moonset
- 9:34 PM
- In sign
- ♋︎ Cancer
Heat settles and the rain begins
Tamms at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: March 30 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Tamms
- Mon78°59°1%
- Tue84°61°17%
- Wed86°63°8%
- Thu84°67°61%
- Fri79°63°58%
- Sat82°61°8%
- Sun82°64°39%
- Mon74°68°48%
- Tue74°62°35%
- Wed79°67°22%
- Thu87°68°20%
- Fri90°73°29%
- Sat89°73°27%
- Sun90°72°19%
- Mon88°74°23%
- Tue87°73°27%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3MRGLMarginal Risk
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 Tamms
- 62988
- 62993