Hebgen Lake Estates, Montana Air Quality
Hebgen Lake Estates has a median AQI of 14, earning an air quality grade of A+ — excellent air quality that ranks better than 96% of US cities. Air quality has been improving steadily over the past decade, a positive sign for residents. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Hebgen Lake Estates recorded 224 good air quality days (99% of monitored days).
Population: 85 • County: Gallatin
Current AQI
Quick Facts
| Current AQI | 3 — Good |
| Air Quality Grade | A+ |
| Median AQI (2025) | 14 |
| vs. U.S. Cities | Better than 96% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | ↑ Improving |
| Data Source | EPA AQS (historical) · AirNow (live) |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Hebgen Lake Estates is sourced from the Yellowstone- Old Faithful Snow Lodge monitoring area, located approximately 33 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
Wildfire smoke is a significant factor in Hebgen Lake Estates's air quality, with regional fires capable of pushing AQI from Good to Unhealthy within hours during fire season (typically July through October). On smoke-impacted days, staying indoors with windows closed and running an air purifier with a HEPA filter is the most effective protection.
AQI Trend (10 Years)
Air Quality Days by Year
Hebgen Lake Estates Median AQI by Year
Annual EPA air quality data for Hebgen Lake Estates — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 14 | 224 | — | 62 | PM2.5 |
| 2024 | 18 | 329 | — | 84 | PM2.5 |
| 2023 | 26 | 331 | — | 98 | PM2.5 |
| 2022 | 32 | 290 | 4 | 148 | PM2.5 |
| 2021 | 41 | 243 | 15 | 158 | PM2.5 |
| 2020 | 29 | 290 | 11 | 162 | PM2.5 |
| 2019 | 33 | 301 | — | 92 | PM2.5 |
| 2018 | 32 | 289 | 6 | 154 | PM2.5 |
| 2017 | 31 | 263 | 3 | 152 | PM2.5 |
| 2016 | 33 | 296 | 11 | 479 | PM2.5 |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Hebgen Lake Estates Air Quality
What is the air quality in Hebgen Lake Estates today?
The current AQI in Hebgen Lake Estates is 3, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Hebgen Lake Estates getting better or worse?
Air quality in Hebgen Lake Estates has been improving. The median AQI has dropped 19 points (from 33 in 2016 to 14 in 2025), a positive trend for residents.
What is the most common air pollutant in Hebgen Lake Estates?
PM2.5 is the primary air pollutant in Hebgen Lake Estates, responsible for 180 days (80% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Hebgen Lake Estates have per year?
In 2025, Hebgen Lake Estates recorded 99% good air quality days (224 days) out of 226 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 62.
What air quality grade does Hebgen Lake Estates receive?
Hebgen Lake Estates receives an air quality grade of A+, placing it better than 96% of US cities. This is based on a median AQI of 14 in 2025, with 224 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 96% of US cities
Nearby Cities
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National Rankings
See how Hebgen Lake Estates compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Hebgen Lake Estates
Hebgen Lake Estates faces elevated PM2.5 from wildfire smoke in addition to year-round traffic and industrial sources. We prioritize True HEPA units with high smoke CADR — essential for rapid air cleaning during smoke events.
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