Alpharetta, Georgia Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Alpharetta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast22%—93°73°—
- MondayJul 6Drizzle70%—88°72°-5°
- TuesdayJul 7Drizzle38%0.01″91°73°+3°
- WednesdayJul 8Clear——95°73°+4°
- ThursdayJul 9Partly Cloudy——95°75°0°
- FridayJul 10Light Drizzle29%0.01″96°77°+1°
- SaturdayJul 11Thunderstorm40%0.05″81°75°-15°
AQI 70 (Moderate), driven by PM2.5. AQI down 34 over the last 6 hours — air quality is improving sharply. PM2.5 at 22.3 µg/m³ (AQI 76) with a 0.96 fine-to-coarse ratio and 2 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 32 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 10 around 1 PM.
- Present
- AQI 32
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 22.3 µg/m³ (AQI 76) with a 0.96 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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
Alpharetta at a glance
- Today vs. normal: 76°F — typical for the season
- Last frost: March 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 30004, 30005, 30009, 30022
15-Day Forecast — Alpharetta
- Sun93°73°22%
- Mon88°72°70%
- Tue91°73°38%
- Wed95°73°9%
- Thu95°75°9%
- Fri96°77°29%
- Sat81°75°40%
- Sun84°72°35%
- Mon79°70°25%
- Tue92°68°15%
- Wed93°73°23%
- Thu93°75°39%
- Fri90°73°39%
- Sat92°76°36%
- Sun96°77°42%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Alpharetta
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 — Alpharetta
SPC has placed Alpharetta in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
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 Alpharetta
- 30022
- 30004
- 30005
- 30009
- 30023