Today | Weather | Tuesday, June 9, 2026

Active Weather Warnings

Heat Advisory

Weather in St. Joseph, Missouri

06:48 PM

Now

90° F

Feels Like 97°

Precipitation 6 %

Wind 16 mph

UV Index (0 - 11+) 1

Humidity 66 %

Today

Day 90°

Night 79°

Precipitation 25 %

Wind 9 mph

UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

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.

St. Joseph Weather Forecast Updated

47 minutes ago

Last updated on June 09, 2026 at 6:00 PM

Air Quality in St. Joseph

NOW

29 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 3.11 µg/m³

PM₁₀ 3.98 µg/m³

O₃ 0.031 ppm

NO₂ 0.5 ppb

SO₂ 0.2 ppb

CO 0.09 ppm

NH₃ 1.09 µg/m³

NO 0.09 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 – 3.11 µg/m³

PM₁₀ – 3.98 µg/m³

O₃ – 61.52 µg/m³

NO₂ – 0.99 µg/m³

SO₂ – 0.49 µg/m³

CO – 107.65 µg/m³

NH₃ – 1.09 µg/m³

NO – 0.09 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for St. Joseph

Moderate Expected Likely

Heat Advisory

Heat Advisory issued June 9 at 4:36PM CDT until June 9 at 10:00PM CDT by NWS Kansas City/Pleasant Hill MO

Jun 9, 4:36 PM → Jun 9, 10:00 PM

WHAT: Heat index values up to 105.

WHERE: Portions of northeast Kansas and north central, northwest,
and west central Missouri.

WHEN: Until 10 PM CDT this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Updated: Jun 9, 6:00 PM Source: NWS Alert