Bangor, Maine Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Bangor weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——87°51°—
- FridayJun 5Overcast28%—86°58°-1°
- SaturdayJun 6Light Showers64%0.15″65°54°-21°
- SundayJun 7Light Showers59%0.17″68°51°+3°
- MondayJun 8Overcast11%—74°50°+6°
- TuesdayJun 9Overcast——81°43°+7°
- WednesdayJun 10Overcast——76°49°-5°
PM2.5 at 6.7 µg/m³ (AQI 37) with a 0.76 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI flat over the last 6 hours (within ±4 points).
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 33 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
- Present
- AQI 33
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 6.7 µg/m³ (AQI 37) with a 0.76 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:20 AM
- Moonset
- 12:16 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Bangor at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: May 15 (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.
SPC Convective Outlook
Storm Prediction Center — Bangor
SPC has placed Bangor 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.