Caldwell, Idaho Weather
Pikas hayfeeding in granite peaks. Day 78 of spring. Read this microseason across nine climate regions →
Caldwell weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——81°58°—
- FridayJun 5Overcast——88°52°+7°
- SaturdayJun 6Overcast——77°54°-11°
- SundayJun 7Overcast——70°47°-7°
- MondayJun 8Drizzle12%0.04″74°52°+4°
- TuesdayJun 9Light Rain38%0.07″67°51°-7°
- WednesdayJun 10Overcast35%—78°52°+11°
Ozone at AQI 53 now. AQI up 8 over the last 6 hours (gradual rise). With UV 0.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 13 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 53 now. With UV 0.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 13 by mid-afternoon.
- Present
- AQI 53
- UV peak
- 0.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) 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).
The higher the clouds, the finer the weather.
- Moonrise
- 6:58 AM
- Moonset
- 4:50 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Caldwell at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: May 8 (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 5, 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.