Cyr, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Cyr weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Drizzle30%0.03″70°54°—
- FridayJun 5Overcast——73°52°+3°
- SaturdayJun 6Overcast——65°45°-8°
- SundayJun 7Light Snow Shwrs29%0.31″56°38°-9°
- MondayJun 8Overcast15%—77°39°+21°
- TuesdayJun 9Overcast51%—73°49°-4°
- WednesdayJun 10Overcast52%—78°55°+5°
Ozone at AQI 42 now. AQI flat over the last 6 hours (within ±3 points). With UV 5.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 31 by mid-afternoon.
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 42 now. With UV 5.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 31 by mid-afternoon.
- Present
- AQI 42
- UV peak
- 5.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 31
PM × Wind × Precip
PM2.5 at 6.8 µg/m³, PM10 at 8.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 6:36 AM
- Moonset
- 3:20 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Cyr at a glance
- Today vs. normal: 67°F — typical for the season
- Last frost: May 28 (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.