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)
73
Moderate
Billings, Montana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
21.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
92.96 μg/m³
0
55
155
255
425
605+
31.03 ppb
0
55
71
86
201
201+
2.00 ppb
0
36
76
186
605
1005+
1.92 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Billings, Montana
Billings, Montana
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AQI 79
Moderate
23.80μg/m³
PM2.5
105.00μg/m³
PM10
49.03ppb
O3
5.03ppb
SO2
1.81ppb
NO2
0.20ppm
CO
AQI 75
Moderate
22.18μg/m³
PM2.5
46.04μg/m³
PM10
37.75ppb
O3
3.93ppb
SO2
2.51ppb
NO2
0.17ppm
CO
AQI 102
Unhealthy for sensitive groups
35.68μg/m³
PM2.5
154.92μg/m³
PM10
49.25ppb
O3
6.57ppb
SO2
2.13ppb
NO2
0.24ppm
CO
AQI 99
Moderate
35.13μg/m³
PM2.5
152.09μg/m³
PM10
49.15ppb
O3
6.58ppb
SO2
2.14ppb
NO2
0.24ppm
CO
AQI 67
Moderate
17.82μg/m³
PM2.5
79.35μg/m³
PM10
44.77ppb
O3
6.50ppb
SO2
2.06ppb
NO2
0.24ppm
CO
AQI 102
Unhealthy for sensitive groups
35.80μg/m³
PM2.5
156.99μg/m³
PM10
46.81ppb
O3
6.04ppb
SO2
2.03ppb
NO2
0.25ppm
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 07:00:00 on 2026-08-12.
The best air quality in Billings, Montana was recorded at 03:00:00 on 2026-08-12.
The real-time air quality index in Billings, Montana is 81, currently categorized as Moderate.
The most common pollutant in Billings, Montana is PM2.5.
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 24.596 μg/m3.
The current PM10 levels in Billings, Montana are 106.957 μg/m3.
The current carbon monoxide (CO) level in Billings, Montana is 0.188 ppm.
The current sulfur dioxide (SO2) levels in Billings, Montana are 1.006 ppb.
The current ozone (O3) levels at Billings, Montana is 28.023 ppm.
The current nitrogen dioxide (NO2) levels at Billings, Montana is 1.964 ppb.
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