Decatur, Arkansas Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Decatur weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——78°62°—
- TuesdayJun 16Thunderstorm——82°64°+4°
- WednesdayJun 17Thunderstorm20%—85°71°+3°
- ThursdayJun 18Heavy Drizzle56%0.01″74°65°-11°
- FridayJun 19Drizzle45%—80°61°+6°
- SaturdayJun 20Thunderstorm16%—84°61°+4°
- SundayJun 21T-storm w/ Hvy Hail44%—85°73°+1°
AQI 40 (Good), driven by Ozone. AQI up 10 over the last 6 hours (gradual rise). Ozone at AQI 42 now. With UV 5.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 31 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 42 now. With UV 5.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 31 around 1 PM.
- Present
- AQI 42
- UV peak
- 5.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 31
PM × Wind × Precip
PM2.5 at 4.9 µg/m³ (AQI 27) with a 1.00 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:06 AM
- Moonset
- 8:51 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Decatur at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: March 25 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Decatur
- Mon78°62°3%
- Tue82°64°6%
- Wed85°71°20%
- Thu74°65°56%
- Fri80°61°45%
- Sat84°61°16%
- Sun85°73°44%
- Mon80°68°58%
- Tue78°67°45%
- Wed79°66°30%
- Thu83°69°23%
- Fri87°72°28%
- Sat87°71°23%
- Sun88°72°13%
- Mon87°71°23%
- Tue92°71°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Decatur
SPC has placed Decatur in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Decatur
- 72722