Bozeman, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Bozeman weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——72°49°—
- FridayJun 5Overcast——84°49°+12°
- SaturdayJun 6Overcast22%—81°52°-3°
- SundayJun 7Heavy Drizzle54%0.11″70°44°-11°
- MondayJun 8Overcast36%—70°43°0°
- TuesdayJun 9Overcast44%—68°53°-2°
- WednesdayJun 10Light Drizzle67%—73°48°+5°
Ozone at AQI 500 now. AQI up 13 over the last 6 hours (gradual rise). With UV 6.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 453 by mid-afternoon.
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 now. With UV 6.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 453 by mid-afternoon.
- Present
- AQI 500
- UV peak
- 6.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 453
PM × Wind × Precip
PM2.5/PM10 ratio 0.57 with 10 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.57
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 6:16 AM
- Moonset
- 3:10 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Bozeman at a glance
- Today vs. normal: 70°F — typical for the season
- Last frost: May 20 (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.
SPC Convective Outlook
Storm Prediction Center — Bozeman
SPC has placed Bozeman in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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.