Today's Air Quality Conditions

Health Effect Category based on  PM2.5 Concentration


Based on the EPA NowCast Averaging Method

For 9:00 PM MDT to 10:00 PM MDT on 10/18/2017

Billings Air Quality is Good.Birney Air Quality is Moderate.Bozeman Air Quality is Good.Broadus Air Quality is Moderate.Butte Air Quality is Good.Dillon Air Quality is Good.Flathead Valley Air Quality is Good.Frenchtown Air Quality is Good.Great Falls Air Quality is Good.Hamilton Air Quality is Moderate.Helena Air Quality is Good.Lewistown Air Quality is Good.Libby Air Quality is Moderate.Malta Air Quality is Good.Missoula Air Quality is Good.Seeley Lake Air Quality is Moderate.Sidney Air Quality is Good.Thompson Falls Air Quality is Moderate.West Yellowstone Air Quality is Good.

Each dot on the map represents an air monitoring station, click on a dot for station specific data. The color of the dot is determined by the current local air quality and comparison to the health effects category table.



Health Effects Categories


Air quality data for the current hour are unavailable.
No health impacts are expected when air quality is in this range.
Unusually sensitive people should consider limiting prolonged outdoor exertion.
Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion.
Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
All children and adults should avoid or limit all outdoor exertion.
Hazardous
Very Unhealthy
Unhealthy
Unhealthy for Sensitive Groups
Moderate
Good
Data Unavailable

 

Explanation of Categories: Breakpoints and Associated Visibility for Particulate Concentrations.


Health Effects Categories

Hazardous

Recommendation: All children and adults should avoid or limit all outdoor exertion.

Very Unhealthy

Recommendation: Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.

Unhealthy

Recommendation: Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion.

Unhealthy for Sensitive Groups

Recommendation: Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.

Moderate

Recommendation: Unusually sensitive people should consider limiting prolonged outdoor exertion.

Good

Recommendation: No health impacts are expected when air quality is in this range.

Data Unavailable

Air quality data for the current hour are unavailable.





*This application was developed in collaboration with Helena High School Students for the Governor’s Mobile App Challenge.