Decatur, Georgia Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Decatur weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast16%—94°73°—
- SundayJul 5Drizzle25%0.03″92°73°-2°
- MondayJul 6Light Drizzle51%0.01″94°73°+2°
- TuesdayJul 7Light Drizzle29%—91°74°-3°
- WednesdayJul 8Mostly Clear16%—96°75°+5°
- ThursdayJul 9Overcast16%—95°77°-1°
- FridayJul 10Overcast36%—94°76°-1°
AQI 110 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 33 in the last 6 hours — air quality is degrading. Ozone at AQI 96. Overcast through the UV peak window (cloud cover ~66%) — afternoon ozone should stay flat.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 96. Overcast through the UV peak window (cloud cover ~66%) — afternoon ozone should stay flat.
- Present
- AQI 96
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 11.9 µg/m³ (AQI 56) with a 0.89 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.89
- 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
- 11:51 PM
- Moonset
- 11:50 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Decatur at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 30030, 30032, 30033, 30034, 30035
16-Day Forecast — Decatur
- Sat94°73°16%
- Sun92°73°25%
- Mon94°73°51%
- Tue91°74°29%
- Wed96°75°16%
- Thu95°77°16%
- Fri94°76°36%
- Sat85°76°40%
- Sun90°73°30%
- Mon77°70°20%
- Tue93°67°20%
- Wed95°76°44%
- Thu92°77°36%
- Fri91°73°45%
- Sat93°76°48%
- Sun97°77°48%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 includes Decatur in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- 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
- 30030
- 30031
- 30036