What is the air quality in Louisville today?

The current Air Quality Index (AQI) in Louisville is 25 (Good). PM2.5 concentration is 6.08 µg/m³.

What is the temperature in Louisville right now?

The current temperature in Louisville is 12.5°C (feels like 12.5°C). Humidity is 33.2% and wind speed is 23.7 km/h.

Is it safe to go outside in Louisville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Low).

Air Quality in Louisville, United States

Drizzle

12.5°C · 33.2% humidity

12.5°

Feels 12.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

172 6pm

74 9pm

87 12am

112 3am

112

112 6am

112

99 9am

87 12pm

87 3pm

Station readings

172

CAMS model adj +62

PM2.5 Trend (24h)

26h · 36 stations

33.2%

Humidity

23.7 km/h

Wind W

1007.5 hPa

Pressure

1.4

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Louisville?

Temperature & Precipitation

PM2.56.08 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX1.4

Low

Station readings (12 stations within 25 km)

6.08

Median

6.18

Average

4.27

Low

9.12

High

PM2.5 µg/m³ · Model: 4.4 · Bias: -1.7

What is the 7-day forecast for Louisville?

04-09

17.8° 5.7°

1.31 mm

04-10

12.5° 7.2°

6.94 mm

04-11

15.8° 4.8°

3.94 mm

04-12

16.2° 3.8°

1.88 mm

04-13

12.8° 3.3°

0.75 mm

04-14

9.4° -0.3°

7.88 mm

04-15

9.7° 1.2°

0.13 mm

Both models agree Avg diff: 5.0°C

Where are air quality stations near Louisville?

Athens, Boulder-CU, Colorado, USA

12.2 km

–

united-states-of-america-boulder-joslyn-court

13.7 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

Northwest Open Space

13.8 km PM2.5: 5.9 µg/m³

165

Recreation Center, Senior Center, and Theatre

14.4 km PM2.5: 82.9 µg/m³

Silver Creek

15.2 km PM2.5: 5.8 µg/m³

North Mor Elementary School

17.0 km PM2.5: 4.8 µg/m³

North Star

18.0 km PM2.5: 4.2 µg/m³

Trail Winds Recreation Center

18.1 km PM2.5: 5.0 µg/m³

Fremont Elementary School

18.3 km PM2.5: 6.0 µg/m³

Thornton Community Park

18.9 km PM2.5: 4.5 µg/m³

What cities are near Louisville?

26 Broomfield 25 Erie 23 Boulder 25 Northglenn 25 Thornton 26 Sherrelwood 26 Arvada 22 Longmont 26 Wheat Ridge 25 Commerce City

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T21:30 UTC.