Central Square - Cambridge, Massachusetts
42° 21.82' N - 071° 06.48' W - 20 feet
Monday September 15 17:00:00 2025

Monthly Summary: 
Yearly Summary: 

Today Week Month Year All
High Temperature: 74.4
13:07
82.7
Sunday
87.1
09/06/2025
105.1
06/24/2025
105.1
06/24/2025
°F
Low Temperature: 59.6
06:58
53.0
Tuesday
53.0
09/09/2025
9.0
01/22/2025
-9.1
02/04/2023
°F
High Humidity: 89
05:56
93
Monday
93
09/07/2025
96
03/31/2025
100
05/17/2011
%
Low Humidity: 59
13:09
37
Thursday
36
09/03/2025
15
03/28/2025
4
06/13/2023
%
High Dewpoint: 62.8
12:12
62.9
Sunday
73.6
09/06/2025
78.3
07/17/2025
90.5
07/01/2009
°F
Low Dewpoint: 56.4
06:58
47.2
Monday
47.2
09/08/2025
-9.1
01/22/2025
-28.2
02/04/2023
°F
High Barometer: 30.237
12:14
30.339
Tuesday
30.339
09/09/2025
30.611
02/02/2025
31.100
01/04/2015
inHg
Low Barometer: 30.081
00:00
29.939
Sunday
29.760
09/06/2025
28.889
02/16/2025
28.625
02/07/2020
inHg
High Heat Index: 74.4
13:07
83.0
Sunday
95.0
09/06/2025
116.1
07/25/2025
119.6
06/20/2024
°F
Low Wind Chill: 59.6
06:58
53.0
Tuesday
53.0
09/09/2025
-4.0
01/22/2025
-31.6
02/04/2023
°F
High Wind Speed: 10
13:50
30
Tuesday
32
09/06/2025
36
03/06/2025
88
04/13/2020
mph
Ave Wind Speed: 0 1 1 2 3 mph
High Rain Rate: 0.00
00:00
0.00
Monday
5.43
09/06/2025
655.35
01/04/2025
655.35
04/23/2021
in/hr
Rain Total: 0.00
0.01
1.83 27.24 700.89 in
High UV Index: 5.5
12:50
6.4
Wednesday
6.6
09/05/2025
9.8
07/07/2025
14.0
07/03/2013
High Solar Radiation: 872
11:56
872
Monday
896
09/05/2025
1243
06/01/2025
2483
07/25/2015
W/m²
High Particulate:
Matter (PM2.5):
20.605
00:48
52.625
Sunday
52.625
09/14/2025
631.010
07/02/2025
5428.570
04/30/2023
µg/m³