In a volunteer observer's own ground/1.4 mi away/67 ft/45 ft below here
temp, humidity, wind, precip, pressure
Weather/California/Arroyo Grande
Arroyo Grande, California
City in San Luis Obispo County, California* WHAT...Temperatures up to 95 expected. * WHERE...Coastal areas of southwest California * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. In the event of a nearby wildfire, smoke may increase heat and physical stress. If smoke impacts your area; 1) Have a cooling plan in place as smoke could limit your ability to cool your home through open windows and 2) If you have air conditioning, set on air recirculation within the home to avoid smoke exposure. Local officials may have additional guidance.
65°
88°/54°
Clear·
Feels like 65°·Light breeze 5 mph NE
Alert. A Heat Advisory is in force for Arroyo Grande until 8 PM Saturday. Read the alert in full, and see what it means in the Field Book.
Now. Arroyo Grande is 65° and clear at 9 PM. The dew point is 43°, so the air feels dry and comfortable. Light breeze from the northeast at 5 mph.
Today and tonight. Tonight falls to about 59° by 4 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is tomorrow, near 92°, and the coolest Tuesday, near 66°. Rain is possible Tuesday (46%) and Wednesday (46%). The windiest day is tomorrow, with wind to 22 mph.
The sky now. The Moon is a waxing crescent, 26% lit, and sets at 9:46 PM. The next full Moon is Sunday, Oct 25. Look for Saturn, bright in the southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 20 minutes long, 2 minutes shorter than yesterday.
0UV Low
44Air quality
44%Humidity
0%Cloud
Now
9:00 PM
65feels65
now, clear
Today
Oct 15
8854
16mph
UV 7
Fri
Oct 16
9258
22mph
UV 7
Sat
Oct 17
9065
14mph
UV 7
Sun
Oct 18
8258
UV 7
Mon
Oct 19
7253
15mph
UV 6
Tue
Oct 20
6650
46%
13mph
Wed
Oct 21
6749
46%
65°
88°54°
92°58°
90°65°
82°58°
72°53°
66°50°
67°49°
As of 9:00 PM in Arroyo Grande, California.
Air quality
The air at Arroyo Grande
Index 44, good, led by coarse particles. Read at 9 PM from its reporting area, Nipomo (CA), 5 miles off.
44Good
- Fine particles (PM2.5)-5.1 mi
- Ozone28Good31 ppb7.9 mi
- Coarse particles (PM10)44Good5.1 mi
- Nitrogen dioxide6Good6.9 ppb7.9 mi
The days ahead
Highest moderate, today, led by coarse particles. Yesterday measured 42, good.
GoodModerate
- 42YesterdayOct 14
- ModerateTodayOct 15
- ModerateFriOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
- GoodTueOct 20
Smoke, the next 45 hours
Little smoke near the ground through Sat 5 PM: the index from smoke stays at 6 or under.
Precipitation
What has fallen at Arroyo Grande
None in the last 3 days, to Thu 8 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.00in
Visibility
How far you can see at Arroyo Grande, the next 45 hours
Visibility stays 10 miles or more through Sat 5 PM.
F
Now, today, and the week
On the radar over Arroyo Grande, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 5 instruments nearest Arroyo Grande, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.
measured now3 instruments
Rank3,213of 4,465
At an airfield/8.8 mi away/182 ft/70 ft above here
temp, wind, gust, visibility, precip, pressure
Arroyo Grande RAWS Near Arroyo Grande CrARGC1
A remote fire weather station/10.4 mi away/623 ft/511 ft above here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Arroyo Grande 1.2 WSWCA-SL-20
In a volunteer observer's own ground/0.6 mi away/95 ft/17 ft below here
precip, snowfall, snow depth
Pismo BeachPISC1
At a cooperative observer's station/5.9 mi away/65 ft/47 ft below here
snowfall, snow depth, precip, high, low
Station report
The weather at San Luis Obispo, drawn
The nearest airport reporting now, 8.8 mi from Arroyo Grande, California. From its report of Oct 15, 2026, 8:56 PM local time: 3 of its 6 sheets.
The sky
No cloud below 12,000 ft; visibility 10 mi or more.
The air
66.0 F with a dew point of 43.0 F, 43 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,200 ft up.
The wind
Calm.
The full report of San Luis Obispo, in 6 sheets, each beside the Field Book plates that explain it
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in California
33 places, each with its own forecast and its own instruments.
Big Bear Mountainski areaBishopcityBridgeporttownChina Peakski areaDodge Ridgeski areaDonner PassfeatureFresnocityHeavenlysurveyed ski areaHomewoodski areaJune Mountainski areaKirkwoodsurveyed ski areaLos AngelescityMammoth LakestownMammoth Mountainsurveyed ski areaMount ShastafeatureMount Shasta CitycityMount Shasta Ski Parkski areaMount WhitneyfeatureMountain Highski areaNorthstarsurveyed ski areaPalisades Tahoesurveyed ski areaReddingcitySacramentocitySan DiegocitySan FranciscocitySierra NevadafeatureSierra-at-Tahoeski areaSnow Valleyski areaSouth Lake TahoecitySugar Bowlski areaSusanvillecityTruckeetownYosemitefeature
Near Arroyo Grande
The nearest places, each with its own forecast and the instruments nearest it.
- Grover Beachcity, 1 mi
- Oceanocommunity, 1 mi
- Pismo Beachcity, 3 mi
- Los Berroscommunity, 4 mi
- Callendercommunity, 5 mi
- Blacklakecommunity, 5 mi
- Ednacommunity, 7 mi
- Woodlandscommunity, 7 mi
- Los Ranchoscommunity, 7 mi
- Nipomocommunity, 8 mi
- Avila Beachcommunity, 9 mi
- Guadalupecity, 11 mi