UV Index Today in Boston, Massachusetts (MA)

Tuesday, October 13, 2026 -3:24 PM EDT (GMT-4)

The UV Index in Boston, Massachusetts (MA) right now is 0.4. This reading was last updated at 3:00 PM EDT, about 24 minutes ago. The UV Index at4:00 PM EDT, in about 35 minutes from now, is expected to be 0.2.

The maximum UV Index today in Boston was 0.6 at 12:00 PM EDT,3 hours and 24 minutes ago. The maximum UV Index tomorrow is expected to be 4.4 at 1:00 PM EDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

October 13
0.6
12:00 PM EDT
Low

Tomorrow

October 14
4.4
1:00 PM EDT
Moderate

UV Index Today Hourly

October 13

The sun will be strongest in Boston, Massachusetts (MA) around 12:00 PM EDT today, with a UV Index of 0.6 (Low risk).

02468108 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PMEastern Daylight Time (EDT, GMT-4)Now: 3:24 PM00.10.20.40.60.60.50.40.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

October 14

UV Index tomorrow for Boston, Massachusetts (MA) reaches 4.4 at 1:00 PM EDT, representingModerate risk.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PMEastern Daylight Time (EDT, GMT-4)00.20.81.93.24.24.43.72.61.30.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

October 12, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.1
Low
9:00 AM0.2
Low
10:00 AM1.5
Low
11:00 AM2.3
Low
12:00 PM3.4
Moderate
1:00 PM4
Moderate
2:00 PM3.4
Moderate
3:00 PM2.3
Low
4:00 PM1.2
Low
5:00 PM0.4
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

October 13, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0
Low
9:00 AM0.1
Low
10:00 AM0.2
Low
11:00 AM0.4
Low
12:00 PM0.6
Low
1:00 PM0.6
Low
2:00 PM0.5
Low
3:00 PM0.4
Low
4:00 PM0.2
Low
5:00 PM0
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

October 14, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.2
Low
9:00 AM0.8
Low
10:00 AM1.9
Low
11:00 AM3.2
Moderate
12:00 PM4.2
Moderate
1:00 PM4.4
Moderate
2:00 PM3.7
Moderate
3:00 PM2.6
Moderate
4:00 PM1.3
Low
5:00 PM0.3
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

October 15, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.2
Low
9:00 AM0.8
Low
10:00 AM1.8
Low
11:00 AM3
Moderate
12:00 PM3.9
Moderate
1:00 PM4
Moderate
2:00 PM3.5
Moderate
3:00 PM2.4
Low
4:00 PM1.2
Low
5:00 PM0.4
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

October 16, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0
Low
9:00 AM0.3
Low
10:00 AM0.3
Low
11:00 AM0.6
Low
12:00 PM1.1
Low
1:00 PM0.8
Low
2:00 PM0.7
Low
3:00 PM0.4
Low
4:00 PM0.2
Low
5:00 PM0.1
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
Data Source: National Oceanic and Atmospheric Administration (NOAA)