Longmont Collocation 1 Air Quality

Monitoring Station · Longmont, United States
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
13 9pm
12
14
14 12am
14
14
21 3am
21
21
14 6am
14
14
12 9am
12
12
— 12pm
—
—
— 3pm
—
—
— 6pm
—
—
Station readings
13
12
CAMS model adj -13
27
27
27
27
27
27
34
34
34
27
27
27
25
25
25

Air Quality Forecast (24h)

PM2.53.0 µg/m³ ✓ WHO
Good
View city history →

Nearby Monitoring Stations

30
Longmont - Municipal, Colorado, USA
0.0 km PM2.5: 7.2 µg/m³
-
united-states-of-america-boulder-joslyn-court
20.3 km PM2.5: 0.0 µg/m³
25
Athens, Boulder-CU, Colorado, USA
22.0 km PM2.5: 6.0 µg/m³
12
Platteville Middle School
24.1 km PM2.5: 3.0 µg/m³
18
Silver Creek
25.0 km PM2.5: 4.3 µg/m³
13
Trail Winds Recreation Center
29.1 km PM2.5: 3.2 µg/m³
12
Anythink Brighton Library
31.1 km PM2.5: 3.0 µg/m³

Nearby Cities

56 Longmont 28 Erie 19 Louisville 57 Boulder 13 Loveland 15 Broomfield 14 Northglenn 13 Thornton 14 Sherrelwood

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-13T00:31 UTC.