Air - Psychrometric Chart for Standard Atmospheric Conditions

Psychrometric chart to analyze air properties, including temperature, humidity, enthalpy, and dew point at barometric pressure 29.921 inches of Mercury and temperature ranging 20°F to 120°F.

Dry Bulb Temperature (°F)	Relative Humidity (%)	Dew Point (°F)	Wet Bulb Temperature (°F)	Humidity Ratio (lbm/lbm)	Enthalpy (BTU/lbm)	Specific Volume (ft³/lbm)
20	30	3.9	11.2	0.0015	2.07	12.96
30	30	13.2	20.1	0.0024	6.5	13.41
40	30	22.9	29.4	0.0037	11.42	13.86
50	30	33	38.9	0.0054	16.88	14.32
60	30	43.3	48.6	0.0075	22.94	14.79
70	30	53.8	58.4	0.0101	29.64	15.26
80	30	64.5	68.2	0.0133	37.04	15.74
90	30	75.3	78.1	0.0171	45.22	16.23
100	30	86.3	88.1	0.0216	54.26	16.73
110	30	97.5	98.2	0.027	64.22	17.24
120	30	108.8	108.3	0.0333	75.18	17.75
20	50	10.2	14.8	0.0024	3.26	12.96
30	50	20	24.2	0.0039	8.05	13.41
40	50	29.5	33.8	0.006	13.32	13.86
50	50	39.3	43.6	0.0087	19.17	14.32
60	50	49.3	53.5	0.0123	25.68	14.79
70	50	59.4	63.5	0.0167	32.95	15.26
80	50	69.7	73.5	0.0221	41.07	15.74
90	50	80	83.6	0.0287	50.11	16.23
100	50	90.4	93.7	0.0365	60.14	16.73
110	50	100.8	103.9	0.0458	71.25	17.24
120	50	111.3	114.1	0.0568	83.54	17.75
20	70	15.4	17.6	0.0034	4.5	12.96
30	70	25.1	27.6	0.0054	9.46	13.41
40	70	34.6	37.3	0.0083	15.04	13.86
50	70	44.5	47.2	0.012	21.34	14.32
60	70	54.6	57.2	0.0168	28.43	14.79
70	70	64.8	67.3	0.0227	36.41	15.26
80	70	75.1	77.4	0.0301	45.35	15.74
90	70	85.4	87.5	0.0391	55.36	16.23
100	70	95.8	97.7	0.0501	66.52	16.73
110	70	106.2	107.9	0.0637	79	17.24
120	70	116.7	118.1	0.0804	92.91	17.75
20	90	19.5	19.8	0.0043	5.58	12.96
30	90	28.8	29.8	0.0069	10.64	13.41
40	90	38.5	39.6	0.0106	16.52	13.86
50	90	48.4	49.5	0.0154	23.5	14.32
60	90	58.5	59.5	0.0214	31.43	14.79
70	90	68.7	69.5	0.0289	40.43	15.26
80	90	79	79.6	0.0382	50.62	15.74
90	90	89.3	89.7	0.0497	62.09	16.23
100	90	99.6	99.8	0.064	75.03	16.73
110	90	110	110	0.082	89.61	17.24
120	90	120.4	120.1	0.1047	106.04	17.75
20	100	20	20	0.0048	6.07	12.96
30	100	30	30	0.0076	11.52	13.41
40	100	40	40	0.0116	17.46	13.86
50	100	50	50	0.0168	24.61	14.32
60	100	60	60	0.0234	33.02	14.79
70	100	70	70	0.0316	42.77	15.26
80	100	80	80	0.0416	54.02	15.74
90	100	90	90	0.0541	66.94	16.23
100	100	100	100	0.0703	81.93	16.73
110	100	110	110	0.0914	99.45	17.24
120	100	120	120	0.1188	120	17.75