Air Quality in Louisville, United States

Windy
19.4°C · 29.2% humidity
19.4°
Feels 19.4°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
18 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
0 6am
0
0
20 9am
14
10
7 12pm
5
4
3 3pm
2
1
1 6pm
1
3
2 9pm
2
2
2 12am
2
2
0 3am
0
0
Station readings 28h ago
AQI 0
PM2.5 0.1 µg/m³ · 28h ago
AD 728×90

Air Quality Index Trend

45h · 48 stn

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.

29.2%
Humidity
45.8 km/h
Wind E
1020.1 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
20
4.73 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Louisville?

Temperature & Precipitation

PM2.5 Trend

45h · 48 stations
PM2.54.73 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (18 stations within 25 km)
4.73
Median
4.66
Average
3.5
Low
6.06
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +1.3

What is the 7-day forecast for Louisville?

09-05
27.6° 17.5°
0.06 mm
09-06
31.2° 8.1°
7.5 mm
09-07
30.6° 15.8°
2.81 mm
09-08
24.4° 16.4°
0.38 mm
09-09
30.8° 16.6°
1.06 mm
09-10
31.8° 9.7°
0.94 mm
09-11
27.4° 10.7°
0.13 mm
Both models agree Avg diff: 3.9°C

Where are air quality stations near Louisville?

20
Northwest Open Space
13.8 km PM2.5: 4.7 µg/m³
20
Recreation Center, Senior Center, and Theatre
14.4 km PM2.5: 4.7 µg/m³
20
Westminster Town Hall
14.7 km PM2.5: 4.8 µg/m³
25
Silver Creek
15.2 km PM2.5: 6.1 µg/m³
22
North Mor Elementary School
17.0 km PM2.5: 5.3 µg/m³
17
North Star
18.0 km PM2.5: 4.1 µg/m³
20
Trail Winds Recreation Center
18.1 km PM2.5: 4.9 µg/m³
18
Fremont Elementary School
18.3 km PM2.5: 4.4 µg/m³
21
Westminster MAC
18.9 km PM2.5: 5.1 µg/m³
18
Thornton Community Park
18.9 km PM2.5: 4.4 µg/m³

What cities are near Louisville?

20 Broomfield 20 Erie 15 Boulder 20 Northglenn 19 Thornton 20 Sherrelwood 19 Arvada 15 Longmont 18 Wheat Ridge 21 Commerce City
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T15:49 UTC.