Stay updated with real-time air quality in Billings, Montana 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)
36
Good
Billings, Montana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.00 μg/m³
0
55
155
255
425
605+
39.01 ppb
0
55
71
86
201
201+
2.00 ppb
0
36
76
186
605
1005+
1.90 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Billings, Montana
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AQI 35
Good
3.00μg/m³
PM2.5
12.00μg/m³
PM10
38.41ppb
O3
1.95ppb
SO2
0.89ppb
NO2
0.17ppm
CO
AQI 35
Good
3.70μg/m³
PM2.5
11.99μg/m³
PM10
38.12ppb
O3
1.17ppb
SO2
1.00ppb
NO2
0.13ppm
CO
AQI 31
Good
0.60μg/m³
PM2.5
2.00μg/m³
PM10
32.72ppb
O3
2.40ppb
SO2
1.95ppb
NO2
0.22ppm
CO
AQI 30
Good
0.64μg/m³
PM2.5
2.16μg/m³
PM10
32.42ppb
O3
2.41ppb
SO2
1.93ppb
NO2
0.22ppm
CO
AQI 18
Good
0.89μg/m³
PM2.5
3.34μg/m³
PM10
19.02ppb
O3
2.49ppb
SO2
1.53ppb
NO2
0.24ppm
CO
AQI 44
Good
8.40μg/m³
PM2.5
37.00μg/m³
PM10
29.16ppb
O3
2.28ppb
SO2
1.91ppb
NO2
0.26ppm
CO
Air quality measurements for Montana, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Billings, Montana is updated on an hourly basis.
The worst air quality in Billings, Montana was recorded at 11:00:00 on 2026-03-08.
The best air quality in Billings, Montana was recorded at 03:00:00 on 2026-03-09.
The real-time air quality index in Billings, Montana is 36, currently categorized as Good.
The most common pollutant in Billings, Montana is O3.
If the air quality in Billings, Montana is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Billings, Montana at present are 1.4 μg/m3.
The current PM10 levels in Billings, Montana are 5.999 μg/m3.
The current carbon monoxide (CO) level in Billings, Montana is 0.161 ppm.
The current sulfur dioxide (SO2) levels in Billings, Montana are 2 ppb.
The current ozone (O3) levels at Billings, Montana is 39.012 ppm.
The current nitrogen dioxide (NO2) levels at Billings, Montana is 1.896 ppb.
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