East Alton, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
East Alton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast19%—93°75°—
- SundayJul 5Rain21%0.23″82°73°-11°
- MondayJul 6Light Drizzle16%—87°70°+5°
- TuesdayJul 7Overcast——85°67°-2°
- WednesdayJul 8Overcast——91°66°+6°
- ThursdayJul 9Overcast34%—94°74°+3°
- FridayJul 10Drizzle43%0.02″89°72°-5°
AQI 41 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.1 µg/m³, PM10 at 9.8 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 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43 now. With UV 4.7 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 43
- UV peak
- 4.7 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 9.1 µg/m³, PM10 at 9.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- 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
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
East Alton at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62024
16-Day Forecast — East Alton
- Sat93°75°19%
- Sun82°73°21%
- Mon87°70°16%
- Tue85°67°6%
- Wed91°66°9%
- Thu94°74°34%
- Fri89°72°43%
- Sat88°73°26%
- Sun78°62°6%
- Mon78°58°6%
- Tue78°60°11%
- Wed82°64°13%
- Thu83°66°13%
- Fri82°69°16%
- Sat86°69°23%
- Sun91°73°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 — East Alton
SPC has placed East Alton 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 East Alton
- 62024
- 62018
- 62002