Guernsey, Wyoming Air Quality
Guernsey 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 remained relatively stable over the past decade. Particulate matter (PM10) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Guernsey recorded 157 good air quality days (88% of monitored days) and 5 unhealthy days.
Population: 754 • County: Platte
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Quick Facts
| Current AQI | 14 — Good |
| Air Quality Grade | A+ |
| Median AQI (2025) | 14 |
| vs. U.S. Cities | Better than 96% |
| Primary Pollutant | PM10 |
| Unhealthy Days/Year | 5 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
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 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
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 Guernsey Air Quality
What is the air quality in Guernsey today?
The current AQI in Guernsey is 14, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Guernsey getting better or worse?
Air quality in Guernsey has remained relatively stable over the past decade, with a median AQI of around 14.
What is the most common air pollutant in Guernsey?
PM10 is the primary air pollutant in Guernsey, responsible for the most air quality-impacted days in 2025. Particulate matter can originate from vehicle exhaust, wildfires, and industrial emissions.
How many unhealthy air days does Guernsey have per year?
In 2025, Guernsey had 5 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 157 good days and 14 moderate days out of 179 days monitored.
What air quality grade does Guernsey receive?
Guernsey receives an air quality grade of A+, placing it better than 96% of US cities. This grade is based on a median AQI of 14 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 96% of US cities
Nearby Cities
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National Rankings
See how Guernsey compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Guernsey
Based on your area's air quality (median AQI: 14), we recommend these air purifiers to help protect your health indoors.
Blueair Blue Pure 211+
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Other Great Options
Honeywell HPA300
Powerful workhorse for large rooms. Built to last.
Dyson Pure Cool TP04
Premium all-in-one air purifier and fan with advanced features.
Molekule Air Pro
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