Stay updated with real-time air quality in Montana, USA featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
30
Good
Montana, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.85 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.39 μg/m³
0
55
155
255
425
605+
32.17 ppb
0
55
71
86
201
201+
4.44 ppb
0
36
76
186
605
1005+
2.21 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montana, USA
Scroll To Air Quality MapLoading...
| No results found | |||||||
| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 29
Good
4.00μg/m³
PM2.5
17.03μg/m³
PM10
30.91ppb
O3
4.25ppb
SO2
4.26ppb
NO2
0.27ppm
CO
AQI 32
Good
1.83μg/m³
PM2.5
8.15μg/m³
PM10
34.60ppb
O3
1.47ppb
SO2
1.27ppb
NO2
0.14ppm
CO
AQI 22
Good
2.78μg/m³
PM2.5
12.31μg/m³
PM10
24.23ppb
O3
0.65ppb
SO2
9.61ppb
NO2
0.21ppm
CO
AQI 29
Good
3.03μg/m³
PM2.5
11.90μg/m³
PM10
31.24ppb
O3
0.97ppb
SO2
1.31ppb
NO2
0.18ppm
CO
AQI 28
Good
2.58μg/m³
PM2.5
11.00μg/m³
PM10
30.24ppb
O3
0.74ppb
SO2
11.58ppb
NO2
0.23ppm
CO
AQI 22
Good
3.71μg/m³
PM2.5
16.06μg/m³
PM10
20.87ppb
O3
0.51ppb
SO2
15.41ppb
NO2
0.33ppm
CO
Air quality data and pollutant measurements for Montana, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Montana, USA is updated every hour.
The worst air quality in Montana, USA in the last 24 hours was observed at 04:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in Montana, USA was observed at 02:00:00 on 2026-03-09.
The current air quality in Montana, USA is 30, categorized as Good based on real-time data.
The most common pollutant in Montana, USA is O3.
If the air quality in Montana, USA is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Montana, USA is 2.846 μg/m3.
The current PM10 concentration at Montana, USA is 11.394 μg/m3.
The current carbon monoxide (CO) concentration at Montana, USA is 0.304 ppm.
The current sulfur dioxide (SO2) concentration at Montana, USA is 4.444 ppb.
The current ozone (O3) concentration at Montana, USA is 32.171 ppm.
The current nitrogen dioxide (NO2) concentration at Montana, USA is 2.206 ppb.
All Rights Reserved © Ambee Inc. 2025