Belfast, Maine Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Belfast weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——81°61°—
- MondayJul 6Overcast——74°58°-7°
- TuesdayJul 7Foggy26%—66°53°-8°
- WednesdayJul 8Overcast23%—81°51°+15°
- ThursdayJul 9Light Drizzle15%—86°59°+5°
- FridayJul 10Light Drizzle49%—82°63°-4°
- SaturdayJul 11Overcast12%—77°53°-5°
AQI 48 (Good), driven by PM2.5. AQI up 9 over the last 6 hours (gradual rise). PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.96 fine-to-coarse ratio and 5 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 38 now. With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 38
- UV peak
- 7.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 9.3 µg/m³ (AQI 51) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- Wind
- light
- 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
- 10:56 PM
- Moonset
- 10:43 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Belfast at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: May 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 04915
16-Day Forecast — Belfast
- Sun81°61°8%
- Mon74°58°1%
- Tue66°53°26%
- Wed81°51°23%
- Thu86°59°15%
- Fri82°63°49%
- Sat77°53°12%
- Sun71°56°17%
- Mon71°51°17%
- Tue75°53°18%
- Wed81°65°24%
- Thu80°59°18%
- Fri87°57°39%
- Sat86°62°29%
- Sun78°57°26%
- Mon80°60°31%
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.
ZIP codes in Belfast
- 04915