Irwin, Idaho Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Irwin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——77°44°—
- ThursdayJun 4Overcast——75°56°-2°
- FridayJun 5Clear——78°51°+3°
- SaturdayJun 6Overcast——82°55°+4°
- SundayJun 7Light Rain18%0.07″68°47°-14°
- MondayJun 8Overcast——75°42°+7°
- TuesdayJun 9Overcast18%—74°47°-1°
Ozone at AQI 61 — peak already passed at 1 PM under clear skies. AQI up 14 over the last 6 hours (gradual rise). Levels should ease through evening.
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 61 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 61
- UV peak
- 1.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 61
PM × Wind × Precip
PM2.5/PM10 ratio 0.55 with 9 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.55
- Wind
- light
- 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
- 6:07 AM
- Moonset
- 3:19 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Irwin at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: May 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.