Today | Weather | Sunday, May 17, 2026

Active Weather Warnings

Wind Advisory

Weather in Meridian, Idaho

01:44 AM

Now

45° F

Feels Like 39°

Precipitation 0 %

Wind 8 mph

Humidity 53 %

Today

Day 63°

Night 37°

Precipitation 60 %

Wind 17 mph

UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Meridian Weather Forecast Updated

30 minutes ago

Last updated on May 17, 2026 at 1:13 AM

Weather Forecast History

Last Year's Weather on This Day (May 17, 2025)

Day

57°

Night

45°

Wind

8 mph

UV Index

Precipitation

100 %

Air Quality in Meridian

NOW

43 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.5 µg/m³

PM₁₀ 0.5 µg/m³

O₃ 0.047 ppm

NO₂ 0.1 ppb

SO₂ 0 ppb

CO 0.10 ppm

NH₃ 0.96 µg/m³

NO 0 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 0.5 µg/m³

PM₁₀ – 0.5 µg/m³

O₃ – 91.8 µg/m³

NO₂ – 0.12 µg/m³

SO₂ – 0.01 µg/m³

CO – 111.61 µg/m³

NH₃ – 0.96 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Meridian

Moderate Expected Likely

Wind Advisory

Wind Advisory issued May 16 at 7:13PM MDT until May 18 at 12:00AM MDT by NWS Boise ID

May 17, 12:00 PM → May 18, 12:00 AM

WHAT: North to northwest winds 20 to 30 mph with gusts up to 50
mph expected.

WHERE: Portions of southwest Idaho and southeast Oregon.

WHEN: From noon MDT /11 AM PDT/ Sunday to midnight MDT /11 PM
PDT/ Sunday Night.

IMPACTS: Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

ADDITIONAL DETAILS: Areas of blowing dust and reduced visibility
will create additional hazards.

+ Read More

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

Updated: May 17, 1:13 AM Source: NWS Alert