Today | Weather | Wednesday, August 5, 2026
Active Weather Warnings

Weather in Meridian, Idaho

11:14 AM
Now
Cloudy Weather
75° F
Feels Like 82°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 6
Humidity 23 %
Today
Cloudy Weather
Day 97°
Night 55°
Precipitation 0 %
Wind 5 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

53 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 5, 2025)
Cloudy Night

Day

91°

Night

57°

Wind

5 mph

Precipitation

0 %

Air Quality in Meridian

NOW
377 AQI
Hazardous air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 347.11 µg/m³
PM10 348.34 µg/m³
O3 0.074 ppm
NO2 1.9 ppb
SO2 0.6 ppb
CO 0.91 ppm
NH3 6.03 µg/m³
NO 0.21 µg/m³
PM2.5 – 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:

Health warnings of emergency conditions. The entire population is more likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.5347.11 µg/m³
PM10348.34 µg/m³
O3145.39 µg/m³
NO23.59 µg/m³
SO21.67 µg/m³
CO1037.28 µg/m³
NH36.03 µg/m³
NO0.21 µg/m³

Weather Alerts and Warnings for Meridian

Air Quality Alert

Air Quality Alert issued August 4 at 12:16PM MDT by NWS Boise ID
Aug 4, 12:16 PM Aug 6, 1:00 PM
WHAT: Air Quality Advisory because of degraded air quality due to
wildfire smoke.

Air Quality Index is forecast to be Unhealthy.

WHERE: Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette,
Valley, and Washington Counties.

WHEN: UNTIL 2 PM MDT FRIDAY.

IMPACTS: Everyone may begin to experience health effects; members
of sensitive groups may experience more serious health effects.
+ Read More
Air pollutants can cause breathing difficulties for children, the elderly, as well as persons with respiratory problems. Those individuals who are sensitive to increased particulate matter or smoke are encouraged to avoid prolonged or strenuous outdoor activity during this advisory. Open burning is prohibited by air quality rule. It is also recommended that all other individuals limit prolonged or strenuous activity outdoors. THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's Boise Regional Office at (208) 373-0550
Updated: Aug 5, 10:20 AM Source: NWS Alert