Fremont, Colorado Air Quality
Fremont County, Colorado (CO)
→ Stableover 10 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days).
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 12 | 21 | 71 | 162 | 1 | 0 | PM10 |
| 2022 | 12 | 26 | 77 | 115 | 3 | 0 | PM10 |
| 2021 | 15 | 28 | 62 | 85 | 1 | 0 | PM10 |
| 2020 | 11 | 20 | 27 | 17 | 0 | 0 | PM10 |
| 2019 | 13 | 23 | 29 | 32 | 0 | 0 | PM10 |
| 2018 | 15 | 20 | 36 | 20 | 0 | 0 | PM10 |
| 2017 | 11 | 28 | 44 | 39 | 0 | 0 | PM10 |
| 2016 | 14 | 24 | 50 | 52 | 0 | 0 | PM10 |
| 2015 | 11 | 22 | 37 | 57 | 0 | 0 | PM10 |
| 2014 | 15 | 27 | 51 | 58 | 1 | 0 | PM10 |
What This Means for Fremont County Residents
Fremont, Colorado has received an Air Quality Grade of A (81/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 12 falls in the "Good" range.
The primary pollutant affecting this area is Coarse Particulate Matter (PM10). Over the past 5 years, this area has averaged 0 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity. The American Lung Association's State of the Air report provides additional context on long-term health risks from air pollution exposure.
Related Cities in Colorado
Frequently Asked Questions
Fremont, Colorado has a current median AQI of 12, which falls in the "Good" range. The area has received an Air Quality Grade of A (81/100) based on 10 years of EPA monitoring data.
Air quality in Fremont, Colorado is stable over the past decade. The median AQI has changed by -3 points from 2014 to 2023.
Fremont, Colorado averages 0 unhealthy air quality days per year over the past 5 years. On these days, sensitive groups including children, the elderly, and those with respiratory conditions should limit outdoor activity.
The primary pollutant affecting Fremont, Colorado is Coarse Particulate Matter (PM10). This is the dominant contributor to elevated AQI readings in the Fremont County area.
Fremont, Colorado averages 0 unhealthy air days per year. This is relatively low, making it a reasonable choice for asthma sufferers. The primary pollutant is Coarse Particulate Matter (PM10), which can affect respiratory health.
With a median AQI of 12 (Good), outdoor exercise in Fremont, Colorado is generally safe year-round. Fremont, Colorado averages 0 days per year when athletes should move workouts indoors.