Calistoga, California Weather
Bay laurel fragrance sweetens shade. Day 90 of spring. Read this microseason across nine climate regions →
Calistoga weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Foggy——82°55°—
- ThursdayJun 18Foggy——75°53°-7°
- FridayJun 19Overcast——79°52°+4°
- SaturdayJun 20Overcast——83°48°+4°
- SundayJun 21Clear——89°52°+6°
- MondayJun 22Clear——92°51°+3°
- TuesdayJun 23Clear——89°51°-3°
AQI 54 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.8 µg/m³ (AQI 56) with a 0.71 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
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 41 now. With UV 7.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 42 around 1 PM.
- Present
- AQI 41
- UV peak
- 7.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 42
PM × Wind × Precip
PM2.5 at 11.8 µg/m³ (AQI 56) with a 0.71 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.71
- Wind
- calm
- 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
- 8:22 AM
- Moonset
- 10:47 PM
- In sign
- ♌︎ Leo
Bay laurel fragrance sweetens shade
Calistoga at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Calistoga
- Wed82°55°3%
- Thu75°53°3%
- Fri79°52°7%
- Sat83°48°4%
- Sun89°52°0%
- Mon92°51°0%
- Tue89°51°0%
- Wed95°51°0%
- Thu98°55°1%
- Fri104°60°1%
- Sat109°67°0%
- Sun109°63°0%
- Mon95°57°0%
- Tue98°55°0%
- Wed101°55°0%
- Thu85°51°3%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
ZIP codes in Calistoga
- 94515