Troy, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Troy weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast27%—72°57°—
- FridayJun 5Overcast——69°54°-3°
- SaturdayJun 6Overcast20%—62°45°-7°
- SundayJun 7Light Drizzle11%—60°41°-2°
- MondayJun 8Light Drizzle——67°42°+7°
- TuesdayJun 9Overcast43%—74°43°+7°
- WednesdayJun 10Drizzle49%0.29″56°51°-18°
PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.79 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. AQI flat over the last 6 hours (within ±3 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 37 now. With UV 3.7 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 13 by mid-afternoon.
- Present
- AQI 37
- UV peak
- 3.7 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.79 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.79
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:47 AM
- Moonset
- 3:19 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Troy at a glance
- Today vs. normal: 67°F — typical for the season
- Last frost: June 6 (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
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.