Stamford, Connecticut Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Stamford weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——90°61°—
- SaturdayJun 6Light Showers50%0.02″93°61°+3°
- SundayJun 7Showers50%0.18″83°63°-10°
- MondayJun 8Mostly Clear——80°53°-3°
- TuesdayJun 9Mostly Clear——85°60°+5°
- WednesdayJun 10Overcast12%—84°63°-1°
- ThursdayJun 11Overcast22%—81°63°-3°
AQI 44 (Good), driven by PM2.5. AQI down 42 over the last 6 hours — air quality is improving sharply. PM2.5 at 22.8 µg/m³ (AQI 77) with a 0.93 fine-to-coarse ratio and 6 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
PM × Wind × Precip
PM2.5 at 22.8 µg/m³ (AQI 77) with a 0.93 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
NO₂ × Time of day
NO₂ at AQI 28 during overnight — within the expected overnight baseline, no source signature.
- Present
- AQI 28
- Phase
- overnight calm
- Pattern
- traffic typical
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).
The higher the clouds, the finer the weather.
- Moonrise
- 3:56 AM
- Moonset
- 1:56 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Stamford at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: April 23 (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 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 — Stamford
SPC has placed Stamford in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.