Cartago, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Cartago weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——97°72°—
- MondayJul 6Overcast——98°69°+1°
- TuesdayJul 7Clear——98°73°0°
- WednesdayJul 8Clear——101°75°+3°
- ThursdayJul 9Clear——104°78°+3°
- FridayJul 10Clear——101°78°-3°
- SaturdayJul 11Overcast——101°80°0°
AQI 29 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 34 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 around 1 PM.
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 34 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 around 1 PM.
- Present
- AQI 34
- UV peak
- 10.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5 at 4.8 µg/m³ (AQI 27), ratio 0.45 with 13 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.45
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:09 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Cartago at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: March 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Cartago
- Sun97°72°2%
- Mon98°69°3%
- Tue98°73°0%
- Wed101°75°0%
- Thu104°78°0%
- Fri101°78°1%
- Sat101°80°1%
- Sun96°80°5%
- Mon97°77°12%
- Tue95°80°23%
- Wed93°77°20%
- Thu97°81°10%
- Fri103°80°10%
- Sat96°81°13%
- Sun96°76°12%
- Mon100°78°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 Cartago
- 93549