Costa Mesa, CA Current Weather Conditions

Current weather observations and 72-hour history for Costa Mesa, CA. • View 5-Day Forecast ›

▼Current Conditions — Costa Mesa, CA

LOS ALAMITOS AAF (KSLI)

Mostly Cloudy

NULL F

Humidity:	%
Wind Speed:	mph
Barometer:	in
Dewpoint:	F
Visibility:	10.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	NA

Oct 17 2026, 06:55 AM PDT

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▼Hourly Observation History — Costa Mesa, CA

Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Temperature (F)		Relative Humidity	Wind Chill (F)	Heat Index (F)	Pressure
Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Air	Dwpt	Relative Humidity	Wind Chill (F)	Heat Index (F)	altimeter (in)	sea level (mb)
06:55 AM PDT		10.00	Mostly Cloudy	--	NULL		%	NA	NA		M
05:55 AM PDT		9.00	NULL	--	NULL		%	NA	NA		M
04:55 AM PDT		10.00	Mostly Clear	--	NULL		%	NA	NA		M
03:55 AM PDT		10.00	Mostly Cloudy	--	NULL		%	NA	NA		M
02:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
01:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
12:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
11:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
10:55 PM PDT	NE 8.1	10.00	Clear	--	82.4	41.9	24%	NA	80.4	29.94	1013.6
09:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
08:55 PM PDT	E 9.2	10.00	Clear	--	88.3		%	NA	NA	29.92	1013.2
07:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
06:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
05:55 PM PDT	G 19.7	8.00	Clear	--	NULL		%	NA	NA		M
04:55 PM PDT		8.00	Clear	--	NULL		%	NA	NA		M
03:55 PM PDT	E 16.1 G 23.0	10.00	Partly Cloudy	--	96.8		%	NA	NA	29.87	1011.5
02:55 PM PDT	G 25.3	10.00	Partly Cloudy	--	NULL		%	NA	NA		M
01:55 PM PDT	G 26.4	10.00	Partly Cloudy	--	NULL		%	NA	NA		M
12:55 PM PDT	G 31.1	10.00	NULL	--	NULL		%	NA	NA		M
11:55 AM PDT	G 30.0	10.00	Mostly Clear	--	NULL		%	NA	NA		M
10:55 AM PDT	21.9 G 31.1	10.00	Mostly Clear and Windy	--	92.3	37.9	15%	NA	88.0	29.94	1013.9
09:55 AM PDT	15.0 G 26.4	10.00	Mostly Clear	--	91.0	38.7	16%	NA	86.9	29.96	1014.6
08:55 AM PDT	G 23.0	10.00	Mostly Clear	--	NULL		%	NA	NA		M
07:55 AM PDT		10.00	Mostly Clear	--	NULL		%	NA	NA		M
06:55 AM PDT	G 19.7	10.00	Mostly Clear	--	NULL		%	NA	NA		M
05:55 AM PDT	NE 16.1 G 21.9	10.00	Clear	--	82.4	38.5	21%	NA	80.2	29.92	1013.2
04:55 AM PDT	NE 11.4	10.00	Clear	--	82.4	38.5	21%	NA	80.2	29.90	1012.5
03:55 AM PDT	23.0 G 30.0	10.00	Clear and Windy	--	83.7	38.3	20%	NA	81.0	29.89	1012.2
02:55 AM PDT	G 39.1	9.00	Clear	--	NULL		%	NA	NA		M
01:55 AM PDT	G 35.8	9.00	Clear	--	NULL		%	NA	NA		M
12:55 AM PDT	G 24.2	10.00	Clear	--	NULL		%	NA	NA		M
11:55 PM PDT		10.00	Clear	--	85.8	36.0	17%	NA	82.6	29.89	1012.2
10:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
09:55 PM PDT	3.4	10.00	Clear	--	82.9	36.5	19%	NA	80.4	29.90	1012.5
08:55 PM PDT	NE 9.2 G 18.3	10.00	Clear	--	NULL		%	NA	NA	29.89	1012.2
07:55 PM PDT		10.00	Mostly Clear	--	NULL		%	NA	NA		M
06:55 PM PDT		10.00	Mostly Clear	--	NULL		%	NA	NA		M
05:55 PM PDT	3.4	10.00	Mostly Clear	--	86.0	42.6	22%	NA	82.9	29.86	1011.2
04:55 PM PDT	NW 4.7	10.00	Mostly Clear	--	NULL		%	NA	NA	29.86	1011.2
03:55 PM PDT	0.0	10.00	Mostly Clear	--	92.5		%	NA	NA	29.87	1011.5
02:55 PM PDT	3.4	10.00	Mostly Clear	--	NULL		%	NA	NA	29.88	1011.9
01:55 PM PDT	G 20.8	10.00	Mostly Clear	--	NULL		%	NA	NA		M
12:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
11:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
10:55 AM PDT	6.9	10.00	Clear	--	85.1	43.2	23%	NA	82.2	29.97	1014.9
09:55 AM PDT	4.7	10.00	Clear	--	76.8	47.8	36%	NA	75.9	29.99	1015.6
08:55 AM PDT	0.0	10.00	Clear	--	68.7	48.7	49%	NA	NA	29.98	1015.2
07:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
06:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
05:55 AM PDT	0.0	10.00	Clear	--	56.5	46.0	68%	NA	NA	29.97	1014.9
04:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
03:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
02:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
01:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
12:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
11:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
10:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
09:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
08:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
07:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
06:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
05:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
04:55 PM PDT	SW 10.3	10.00	Clear	--	80.6		%	NA	NA	29.96	1014.6
03:55 PM PDT	SW 11.4	10.00	Clear	--	81.0	40.8	24%	NA	79.9	29.96	1014.6
02:55 PM PDT	SW 9.2	10.00	Clear	--	82.0		%	NA	NA	29.96	1014.6
01:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
12:55 PM PDT		10.00	Clear	--	NULL		%	NA	NA		M
11:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
10:55 AM PDT	3.4	10.00	Clear	--	76.6		%	NA	NA	30.03	1016.9
09:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
08:55 AM PDT		10.00	Clear	--	NULL		%	NA	NA		M
07:55 AM PDT	0.0	10.00	Clear	--	57.4	50.2	77%	NA	NA	30.01	1016.3