Alpharetta, Georgia Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Alpharetta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——84°55°—
- FridayJun 5Overcast——89°60°+5°
- SaturdayJun 6Overcast——92°64°+3°
- SundayJun 7Overcast——91°73°-1°
- MondayJun 8Light Drizzle23%—86°73°-5°
- TuesdayJun 9Overcast34%—75°61°-11°
- WednesdayJun 10Overcast21%—87°62°+12°
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. AQI up 67 in the last 6 hours — air quality is degrading. Levels should ease through evening.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 1.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 500
PM × Wind × Precip
PM2.5 at 5.7 µg/m³, PM10 at 6.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:48 AM
- Moonset
- 1:55 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Alpharetta at a glance
- Today vs. normal: 83°F — typical for the season
- Last frost: March 11 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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.