Siloam Springs, Arkansas Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Siloam Springs weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast23%—92°74°—
- SundayJul 5Rain53%0.39″87°68°-5°
- MondayJul 6Thunderstorm21%—90°71°+3°
- TuesdayJul 7Overcast12%—90°69°0°
- WednesdayJul 8Clear——92°70°+2°
- ThursdayJul 9Overcast11%—95°73°+3°
- FridayJul 10Light Drizzle30%—91°78°-4°
AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.0 µg/m³ (AQI 55) with a 0.73 fine-to-coarse ratio and 4 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 46 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 46
- UV peak
- 6.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5 at 11.0 µg/m³ (AQI 55) with a 0.73 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.73
- Wind
- calm
- 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
- 11:07 PM
- Moonset
- 10:28 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Siloam Springs at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: March 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 72761
16-Day Forecast — Siloam Springs
- Sat92°74°23%
- Sun87°68°53%
- Mon90°71°21%
- Tue90°69°12%
- Wed92°70°6%
- Thu95°73°11%
- Fri91°78°30%
- Sat87°68°22%
- Sun84°62°5%
- Mon84°59°4%
- Tue84°61°5%
- Wed86°65°7%
- Thu88°65°20%
- Fri90°68°23%
- Sat89°63°16%
- Sun84°65°29%
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 — Siloam Springs
SPC has placed Siloam Springs in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Siloam Springs
- 72761