UV Index Today in Boston, Massachusetts (MA)

Saturday, August 29, 2026 -12:47 PM EDT (GMT-4)

The UV Index in Boston, Massachusetts (MA) right now is 6.7. This reading was last updated at 12:00 PM EDT, about 47 minutes ago. The UV Index at1:00 PM EDT, in about 12 minutes from now, is expected to be 6.9.

The maximum UV Index today in Boston is expected to be 6.9 at 1:00 PM EDT,12 minutes from now. The maximum UV Index tomorrow is expected to be 6.5 at 12:00 PM EDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 29
6.9
1:00 PM EDT
High

Tomorrow

August 30
6.5
12:00 PM EDT
High

UV Index Today Hourly

August 29

The sun will be strongest in Boston, Massachusetts (MA) around 1:00 PM EDT today, with a UV Index of 6.9 (High risk).

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMEastern Daylight Time (EDT, GMT-4)Now: 12:47 PM00.20.82.13.85.56.76.96.14.62.81.30.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 30

UV Index tomorrow for Boston, Massachusetts (MA) reaches 6.5 at 12:00 PM EDT, representingHigh risk.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMEastern Daylight Time (EDT, GMT-4)00.20.61.53.45.46.56.25.64.320.50.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 28, 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 AM0.2
Low
8:00 AM0.8
Low
9:00 AM1.9
Low
10:00 AM3.6
Moderate
11:00 AM5.6
High
12:00 PM6.8
High
1:00 PM7
High
2:00 PM4.9
Moderate
3:00 PM3.4
Moderate
4:00 PM2
Low
5:00 PM0.5
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 29, 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 AM0.2
Low
8:00 AM0.8
Low
9:00 AM2.1
Low
10:00 AM3.8
Moderate
11:00 AM5.5
High
12:00 PM6.7
High
1:00 PM6.9
High
2:00 PM6.1
High
3:00 PM4.6
Moderate
4:00 PM2.8
Moderate
5:00 PM1.3
Low
6:00 PM0.4
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 30, 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 AM0.2
Low
8:00 AM0.6
Low
9:00 AM1.5
Low
10:00 AM3.4
Moderate
11:00 AM5.4
Moderate
12:00 PM6.5
High
1:00 PM6.2
High
2:00 PM5.6
High
3:00 PM4.3
Moderate
4:00 PM2
Low
5:00 PM0.5
Low
6:00 PM0.2
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 31, 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 AM0.2
Low
8:00 AM0.7
Low
9:00 AM2
Low
10:00 AM3.7
Moderate
11:00 AM5.4
Moderate
12:00 PM6.2
High
1:00 PM5.2
Moderate
2:00 PM3.8
Moderate
3:00 PM3.6
Moderate
4:00 PM2.5
Moderate
5:00 PM1.2
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 1, 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 AM0.2
Low
8:00 AM0.7
Low
9:00 AM1.4
Low
10:00 AM3.1
Moderate
11:00 AM3.5
Moderate
12:00 PM5.4
Moderate
1:00 PM6.7
High
2:00 PM5.2
Moderate
3:00 PM3.3
Moderate
4:00 PM1.8
Low
5:00 PM0.8
Low
6:00 PM0.3
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)