UV Index Today in Boise City, Idaho (ID)

Sunday, September 20, 2026 -10:22 AM MDT (GMT-6)

The UV Index in Boise City, Idaho (ID) right now is 1.3. This reading was last updated at 10:00 AM MDT, about 22 minutes ago. The UV Index at11:00 AM MDT, in about 37 minutes from now, is expected to be 2.7.

The maximum UV Index today in Boise City is expected to be 5.5 at 2:00 PM MDT,3 hours and 37 minutes from now. The maximum UV Index tomorrow is expected to be 5.8 at 1:00 PM MDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

September 20
5.5
2:00 PM MDT
High

Tomorrow

September 21
5.8
1:00 PM MDT
High

UV Index Today Hourly

September 20

The sun will be strongest in Boise City, Idaho (ID) around 2:00 PM MDT today, with a UV Index of 5.5 (High risk).

02468108 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMMountain Daylight Time (MDT, GMT-6)Now: 10:22 AM00.41.32.74.25.25.54.83.52.10.80.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

September 21

The UV Index for Boise City, Idaho (ID) peaks at 5.8 tomorrow at 1:00 PM MDT, classified as High risk.

02468108 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMMountain Daylight Time (MDT, GMT-6)00.51.42.94.65.85.853.62.10.80.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

September 19, 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 AM0.4
Low
10:00 AM1.3
Low
11:00 AM2.6
Moderate
12:00 PM4.1
Moderate
1:00 PM5.1
Moderate
2:00 PM5.3
Moderate
3:00 PM4.7
Moderate
4:00 PM3.4
Moderate
5:00 PM2
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 20, 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 AM0.4
Low
10:00 AM1.3
Low
11:00 AM2.7
Moderate
12:00 PM4.2
Moderate
1:00 PM5.2
Moderate
2:00 PM5.5
High
3:00 PM4.8
Moderate
4:00 PM3.5
Moderate
5:00 PM2.1
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 21, 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 AM0.5
Low
10:00 AM1.4
Low
11:00 AM2.9
Moderate
12:00 PM4.6
Moderate
1:00 PM5.8
High
2:00 PM5.8
High
3:00 PM5
Moderate
4:00 PM3.6
Moderate
5:00 PM2.1
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 22, 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 AM1.1
Low
11:00 AM2.3
Low
12:00 PM3.8
Moderate
1:00 PM4.7
Moderate
2:00 PM5.2
Moderate
3:00 PM4.8
Moderate
4:00 PM3.5
Moderate
5:00 PM2
Low
6:00 PM0.8
Low
7:00 PM0.2
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 23, 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 AM0.4
Low
10:00 AM1.3
Low
11:00 AM2.6
Moderate
12:00 PM4
Moderate
1:00 PM4.9
Moderate
2:00 PM5.2
Moderate
3:00 PM4.7
Moderate
4:00 PM3
Moderate
5:00 PM1.1
Low
6:00 PM0.6
Low
7:00 PM0.2
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)