Waterloo, IL Current Weather Conditions

Current weather observations and 72-hour history for Waterloo, IL. • View 5-Day Forecast ›

▼Current Conditions — Waterloo, IL

CAHOKIA/ST LOUIS (KCPS)

Clear

100.4 F

Humidity:	33%
Wind Speed:	S 4.6 mph
Barometer:	29.99 in
Dewpoint:	66.2 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	105.1 F
Wind Chill:	NA

Sep 1 2026, 03:10 PM CDT

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▼Hourly Observation History — Waterloo, IL

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)
03:10 PM CDT	S 4.6	10.00	Clear	--	100.4	66.2	33%	NA	105.1	29.99	1015.6
03:05 PM CDT	SE 8.1	10.00	Clear	--	100.4	66.2	33%	NA	105.1	29.99	1015.6
02:45 PM CDT	0.0	10.00	Mostly Clear	--	98.6	64.4	33%	NA	101.5	29.99	1015.6
02:40 PM CDT	0.0	10.00	Mostly Clear	--	98.6	64.4	33%	NA	101.5	30.00	1015.9
02:35 PM CDT	3.4	10.00	Clear	--	100.4	66.2	33%	NA	105.1	30.00	1015.9
02:30 PM CDT	SE 3.4	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.00	1015.9
02:20 PM CDT	W 5.7	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.00	1015.9
02:15 PM CDT	5.7	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.00	1015.9
02:05 PM CDT	0.0	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.01	1016.3
01:53 PM CDT	0.0	10.00	Clear	--	98.1	66.0	35%	NA	102.0	30.01	1016.3
01:45 PM CDT	4.6	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.01	1016.3
01:30 PM CDT	4.6	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.02	1016.6
01:25 PM CDT	SW 8.1	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.02	1016.6
01:20 PM CDT	W 3.4	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.02	1016.6
01:10 PM CDT	W 3.4	10.00	Clear	--	98.6	66.2	35%	NA	102.7	30.02	1016.6
01:00 PM CDT	SW 4.6	10.00	Clear	--	96.8	68.0	39%	NA	102.0	30.03	1016.9
12:45 PM CDT	SW 5.7	10.00	Clear	--	96.8	68.0	39%	NA	102.0	30.03	1016.9
12:40 PM CDT	0.0	10.00	Clear	--	96.8	69.8	42%	NA	103.6	30.03	1016.9
12:35 PM CDT	3.4	10.00	Clear	--	96.8	69.8	42%	NA	103.6	30.03	1016.9
12:30 PM CDT	3.4	10.00	Clear	--	96.8	69.8	42%	NA	103.6	30.03	1016.9
12:20 PM CDT	4.6	10.00	Clear	--	95.0	69.8	44%	NA	101.5	30.04	1017.3
12:10 PM CDT	5.7	10.00	Clear	--	96.8	69.8	42%	NA	103.6	30.04	1017.3
12:00 PM CDT	5.7	10.00	Clear	--	95.0	69.8	44%	NA	101.5	30.04	1017.3
11:50 AM CDT	W 6.9	10.00	Clear	--	95.0	69.8	44%	NA	101.5	30.04	1017.3
11:45 AM CDT	5.7	10.00	Clear	--	95.0	69.8	44%	NA	101.5	30.05	1017.6
11:30 AM CDT	W 5.7	10.00	Clear	--	93.2	69.8	47%	NA	99.1	30.05	1017.6
11:20 AM CDT	4.6	10.00	Clear	--	93.2	71.6	50%	NA	100.9	30.05	1017.6
11:15 AM CDT	5.7	10.00	Clear	--	93.2	71.6	50%	NA	100.9	30.05	1017.6
11:10 AM CDT	W 4.6	10.00	Clear	--	93.2	71.6	50%	NA	100.9	30.05	1017.6
11:00 AM CDT	SW 6.9	10.00	Clear	--	91.4	71.6	53%	NA	98.6	30.05	1017.6
10:50 AM CDT	3.4	10.00	Clear	--	91.4	71.6	53%	NA	98.6	30.05	1017.6
10:40 AM CDT	4.6	10.00	Clear	--	89.6	71.6	56%	NA	96.4	30.06	1017.9
10:30 AM CDT	0.0	10.00	Clear	--	89.6	71.6	56%	NA	96.4	30.06	1017.9
10:20 AM CDT	SW 5.7	10.00	Clear	--	89.6	71.6	56%	NA	96.4	30.06	1017.9
10:15 AM CDT	5.7	10.00	Clear	--	89.6	71.6	56%	NA	96.4	30.06	1017.9
10:10 AM CDT	3.4	10.00	Clear	--	87.8	71.6	59%	NA	94.3	30.06	1017.9
10:05 AM CDT	SW 6.9	10.00	Clear	--	87.8	69.8	55%	NA	92.7	30.06	1017.9
10:00 AM CDT	SW 6.9	10.00	Clear	--	87.8	71.6	59%	NA	94.3	30.06	1017.9
09:50 AM CDT	SW 5.7	10.00	Clear	--	87.8	69.8	55%	NA	92.7	30.06	1017.9
09:40 AM CDT	SW 6.9	10.00	Clear	--	87.8	69.8	55%	NA	92.7	30.06	1017.9
09:35 AM CDT	SW 4.6	10.00	Clear	--	86.0	69.8	59%	NA	90.7	30.06	1017.9
09:25 AM CDT	4.6	10.00	Clear	--	86.0	69.8	59%	NA	90.7	30.06	1017.9
09:20 AM CDT	5.7	10.00	Clear	--	84.2	69.8	62%	NA	88.5	30.06	1017.9
09:10 AM CDT	SW 6.9	10.00	Clear	--	84.2	69.8	62%	NA	88.5	30.06	1017.9
09:00 AM CDT	SW 4.6	10.00	Clear	--	84.2	69.8	62%	NA	88.5	30.06	1017.9
08:50 AM CDT	S 3.4	10.00	Clear	--	82.4	71.6	70%	NA	87.3	30.06	1017.9
08:45 AM CDT	0.0	10.00	Clear	--	82.4	71.6	70%	NA	87.3	30.06	1017.9
08:35 AM CDT	S 3.4	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.06	1017.9
08:30 AM CDT	0.0	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.06	1017.9
08:25 AM CDT	0.0	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.06	1017.9
08:20 AM CDT	3.4	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.06	1017.9
08:15 AM CDT	0.0	10.00	Clear	--	78.8	71.6	79%	NA	81.7	30.07	1018.3
08:10 AM CDT	0.0	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.07	1018.3
08:05 AM CDT	3.4	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.07	1018.3
08:00 AM CDT	0.0	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.06	1017.9
07:40 AM CDT	3.4	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.06	1017.9
07:35 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.06	1017.9
07:30 AM CDT	S 3.4	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.06	1017.9
07:20 AM CDT	S 3.4	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.05	1017.6
07:15 AM CDT	S 3.4	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.05	1017.6
07:10 AM CDT	S 3.4	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.05	1017.6
07:05 AM CDT	3.4	10.00	Clear	--	71.6	69.8	94%	NA	72.9	30.05	1017.6
06:50 AM CDT	S 3.4	10.00	Clear	--	71.6	69.8	94%	NA	72.9	30.04	1017.3
06:40 AM CDT	S 3.4	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
06:35 AM CDT	0.0	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
06:30 AM CDT	0.0	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.04	1017.3
06:20 AM CDT	S 3.4	10.00	Clear	--	71.6	69.8	94%	NA	72.9	30.04	1017.3
06:15 AM CDT	S 3.4	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.04	1017.3
06:10 AM CDT	0.0	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
06:05 AM CDT	0.0	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.04	1017.3
05:50 AM CDT	0.0	10.00	Clear	--	71.6	69.8	94%	NA	72.9	30.03	1016.9
05:40 AM CDT	0.0	10.00	Clear	--	71.6	69.8	94%	NA	72.9	30.03	1016.9