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

82.4 F

Humidity:	66%
Wind Speed:	NW 3.4 mph
Barometer:	30.08 in
Dewpoint:	69.8 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	86.2 F
Wind Chill:	NA

Aug 8 2026, 11:05 AM CDT

Alert Subscriptions

Severe Weather

Tornado, flood & storm warnings

Observations

Station conditions & threshold alerts

Daily Forecast

Morning summary delivered daily

Lightning

Real-time strike alerts

▼State Weather Snapshot — Illinois

Temperature

Dewpoint

Wind Speed

Full Interactive Observation Map →

▼Radar — Illinois

Loading radar…

Active Alerts Lightning

Full Interactive Radar Map →

▼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)
11:05 AM CDT	NW 3.4	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:50 AM CDT	0.0	10.00	Clear	--	84.2	69.8	62%	NA	88.5	30.08	1018.6
10:45 AM CDT	3.4	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:40 AM CDT	0.0	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:35 AM CDT	0.0	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.09	1019.0
10:30 AM CDT	0.0	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:25 AM CDT	0.0	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:15 AM CDT	0.0	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.09	1019.0
10:10 AM CDT	W 3.4	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
10:00 AM CDT	0.0	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:50 AM CDT	3.4	10.00	Clear	--	82.4	69.8	66%	NA	86.2	30.08	1018.6
09:45 AM CDT	3.4	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:35 AM CDT	3.4	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:25 AM CDT	0.0	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:20 AM CDT	0.0	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:15 AM CDT	NW 4.6	10.00	Clear	--	80.6	69.8	70%	NA	83.8	30.08	1018.6
09:10 AM CDT	0.0	10.00	Clear	--	78.8	68.0	70%	NA	79.7	30.09	1019.0
09:05 AM CDT	0.0	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.08	1018.6
09:00 AM CDT	0.0	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.08	1018.6
08:50 AM CDT	0.0	10.00	Clear	--	78.8	69.8	74%	NA	79.9	30.08	1018.6
08:35 AM CDT	4.6	10.00	Clear	--	77.0	69.8	78%	NA	78.1	30.08	1018.6
08:30 AM CDT	0.0	10.00	Clear	--	77.0	69.8	78%	NA	78.1	30.09	1019.0
08:20 AM CDT	0.0	10.00	Clear	--	77.0	68.0	74%	NA	77.9	30.08	1018.6
08:15 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.08	1018.6
08:10 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.08	1018.6
08:05 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.08	1018.6
08:00 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.08	1018.6
07:50 AM CDT	0.0	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.08	1018.6
07:40 AM CDT	0.0	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.08	1018.6
07:35 AM CDT	0.0	10.00	Clear	--	73.4	69.8	89%	NA	74.7	30.08	1018.6
07:25 AM CDT	0.0	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.07	1018.3
07:20 AM CDT	0.0	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.07	1018.3
07:10 AM CDT	3.4	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.07	1018.3
06:53 AM CDT	S 3.4	10.00	Clear	--	70.0	66.9	90%	NA	NA	30.06	1018.0
06:50 AM CDT	S 4.6	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.06	1017.9
06:45 AM CDT	3.4	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.06	1017.9
06:35 AM CDT	4.6	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.06	1017.9
06:30 AM CDT	4.6	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.06	1017.9
06:25 AM CDT	5.7	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.05	1017.6
06:20 AM CDT	4.6	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.05	1017.6
06:10 AM CDT	S 4.6	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.05	1017.6
06:00 AM CDT	0.0	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.04	1017.3
05:50 AM CDT	0.0	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.04	1017.3
05:40 AM CDT	0.0	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.04	1017.3
05:35 AM CDT	0.0	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.04	1017.3
05:30 AM CDT	0.0	10.00	Clear	--	68.0	66.2	94%	NA	NA	30.04	1017.3
05:25 AM CDT	W 3.4	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.04	1017.3
05:20 AM CDT	W 3.4	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.04	1017.3
05:15 AM CDT	3.4	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.04	1017.3
05:10 AM CDT	0.0	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.04	1017.3
05:05 AM CDT	0.0	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.04	1017.3
04:53 AM CDT	0.0	10.00	Clear	--	69.1	66.9	93%	NA	NA	30.04	1017.3
04:45 AM CDT	0.0	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
04:40 AM CDT	0.0	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
04:35 AM CDT	0.0	10.00	Clear	--	69.8	68.0	94%	NA	NA	30.04	1017.3
04:25 AM CDT	4.6	10.00	Clear	--	69.8	66.2	88%	NA	NA	30.03	1016.9
04:20 AM CDT	4.6	10.00	Clear	--	71.6	66.2	83%	NA	72.3	30.03	1016.9
04:15 AM CDT	3.4	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.03	1016.9
04:10 AM CDT	0.0	10.00	Clear	--	71.6	68.0	88%	NA	72.7	30.03	1016.9
04:00 AM CDT	0.0	10.00	Clear	--	73.4	68.0	83%	NA	74.3	30.02	1016.6
03:45 AM CDT	3.4	10.00	Clear	--	73.4	68.0	83%	NA	74.3	30.02	1016.6
03:40 AM CDT	0.0	10.00	Clear	--	73.4	68.0	83%	NA	74.3	30.02	1016.6
03:35 AM CDT	0.0	10.00	Clear	--	73.4	68.0	83%	NA	74.3	30.02	1016.6
03:20 AM CDT	3.4	10.00	Clear	--	75.2	68.0	78%	NA	76.1	30.02	1016.6
03:15 AM CDT	3.4	10.00	Clear	--	75.2	68.0	78%	NA	76.1	30.02	1016.6
03:10 AM CDT	6.9	10.00	Clear	--	75.2	68.0	78%	NA	76.1	30.02	1016.6
03:00 AM CDT	3.4	10.00	Clear	--	75.2	68.0	78%	NA	76.1	30.02	1016.6
02:50 AM CDT	0.0	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.02	1016.6
02:45 AM CDT	SW 3.4	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.02	1016.6
02:40 AM CDT	5.7	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.01	1016.3
02:35 AM CDT	SW 4.6	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.02	1016.6
02:25 AM CDT	W 3.4	10.00	Clear	--	75.2	69.8	83%	NA	76.3	30.02	1016.6