What is the air quality in Louisville today?

The current Air Quality Index (AQI) in Louisville is 33 (Good). PM2.5 concentration is 8.03 µg/m³.

What is the temperature in Louisville right now?

The current temperature in Louisville is 14.1°C (feels like 14.1°C). Humidity is 28.8% and wind speed is 1.2 km/h.

Is it safe to go outside in Louisville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Louisville, United States

Clear

14.1°C · 28.8% humidity

14.1°

Feels 14.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

20 stations

Nearby Monitoring Stations

AQI Forecast

— 12pm

—

— 3pm

—

— 6pm

—

— 9pm

—

— 12am

—

— 3am

—

— 6am

—

— 9am

—

Station readings 18h ago

AQI 1

PM2.5 0.3 µg/m³ · 18h ago

Air Quality Index Trend

9h · 1 stn

View full history →

Louisville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

28.8%

Humidity

1.2 km/h

Wind NE

1013.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.03 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Louisville?

Temperature & Precipitation

PM2.5 Trend

9h · 1 station

PM2.58.03 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (20 stations within 25 km)

8.03

Median

8.08

Average

4.6

Low

10.68

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +5.5

What is the 7-day forecast for Louisville?

10-20

20.3° 6.5°

10-21

20.4° 5.4°

10-22

12.4° 4.1°

10-23

9.8° -3.8°

5.25 mm

10-24

17.2° 11.9°

10-25

16.0° 5.0°

0.06 mm

10-26

20.6° 3.9°

Both models agree Avg diff: 4.7°C

Where are air quality stations near Louisville?

Athens, Boulder-CU, Colorado, USA

12.2 km PM2.5: 4.6 µg/m³

Athens, Boulder-CU, Colorado, USA

12.2 km PM2.5: 3.1 µg/m³

Athens, Boulder-CU, Colorado, USA

12.2 km PM2.5: 3.6 µg/m³

Northwest Open Space

13.8 km PM2.5: 8.4 µg/m³

Recreation Center, Senior Center, and Theatre

14.4 km PM2.5: 8.4 µg/m³

Westminster Town Hall

14.7 km PM2.5: 9.1 µg/m³

Silver Creek

15.2 km PM2.5: 8.5 µg/m³

North Star

18.0 km PM2.5: 6.0 µg/m³

Trail Winds Recreation Center

18.1 km PM2.5: 6.2 µg/m³

Fremont Elementary School

18.3 km PM2.5: 9.2 µg/m³

What cities are near Louisville?

37 Broomfield 32 Erie 19 Boulder 35 Northglenn 32 Thornton 35 Sherrelwood 39 Arvada 21 Longmont 39 Wheat Ridge 42 Commerce City

Get AQI alerts for Louisville

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T21:46 UTC.