UV Index Today in Boston, Massachusetts (MA)

Saturday, August 8, 2026 -12:46 PM EDT (GMT-4)

The UV Index in Boston, Massachusetts (MA) right now is 7.7. This reading was last updated at 12:00 PM EDT, about 46 minutes ago. The UV Index at1:00 PM EDT, in about 13 minutes from now, is expected to be 8.

The maximum UV Index today in Boston is expected to be 8 at 1:00 PM EDT,13 minutes from now. The maximum UV Index tomorrow is expected to be 8.1 at 1:00 PM EDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

August 8
8
1:00 PM EDT
Very High

Tomorrow

August 9
8.1
1:00 PM EDT
Very High

UV Index Today Hourly

August 8

The sun will be strongest in Boston, Massachusetts (MA) around 1:00 PM EDT today, with a UV Index of 8 (Very High risk).

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMEastern Daylight Time (EDT, GMT-4)Now: 12:46 PM00.10.624.13.67.787.14.70.70.90.30.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

August 9

UV Index tomorrow for Boston, Massachusetts (MA) reaches 8.1 at 1:00 PM EDT, representingVery High risk.

02468106 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMEastern Daylight Time (EDT, GMT-4)00.41.12.64.46.27.88.17.35.23.31.70.60.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

August 7, 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 AM0.4
Low
8:00 AM1.3
Low
9:00 AM2.8
Moderate
10:00 AM4.7
Moderate
11:00 AM6.6
High
12:00 PM7.7
Very High
1:00 PM8
Very High
2:00 PM7.2
High
3:00 PM5.5
High
4:00 PM3.5
Moderate
5:00 PM1.8
Low
6:00 PM0.7
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 8, 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 AM0.1
Low
8:00 AM0.6
Low
9:00 AM2
Low
10:00 AM4.1
Moderate
11:00 AM3.6
Moderate
12:00 PM7.7
Very High
1:00 PM8
Very High
2:00 PM7.1
High
3:00 PM4.7
Moderate
4:00 PM0.7
Low
5:00 PM0.9
Low
6:00 PM0.3
Low
7:00 PM0.1
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 9, 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 AM0.4
Low
8:00 AM1.1
Low
9:00 AM2.6
Moderate
10:00 AM4.4
Moderate
11:00 AM6.2
High
12:00 PM7.8
Very High
1:00 PM8.1
Very High
2:00 PM7.3
High
3:00 PM5.2
Moderate
4:00 PM3.3
Moderate
5:00 PM1.7
Low
6:00 PM0.6
Low
7:00 PM0.1
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 10, 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 AM0.3
Low
8:00 AM1
Low
9:00 AM2.1
Low
10:00 AM3.6
Moderate
11:00 AM5.2
Moderate
12:00 PM6.4
High
1:00 PM6.7
High
2:00 PM6
High
3:00 PM4.5
Moderate
4:00 PM2.8
Moderate
5:00 PM1.4
Low
6:00 PM0.6
Low
7:00 PM0.1
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

August 11, 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 AM0.3
Low
8:00 AM0.8
Low
9:00 AM1.6
Low
10:00 AM3.2
Moderate
11:00 AM4.3
Moderate
12:00 PM4.7
Moderate
1:00 PM5
Moderate
2:00 PM5.3
Moderate
3:00 PM4.1
Moderate
4:00 PM2.6
Moderate
5:00 PM1.3
Low
6:00 PM0.5
Low
7:00 PM0.1
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)