Coeur d'Alene, Idaho Air Quality
Coeur d'Alene has a median AQI of 24, earning an air quality grade of A+ — excellent air quality that ranks better than 92% 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, Coeur d'Alene recorded 160 good air quality days (88% of monitored days).
Population: 131,592 • County: Kootenai
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Quick Facts
| Current AQI | 33 — Good |
| Air Quality Grade | A+ |
| Median AQI (2025) | 24 |
| vs. U.S. Cities | Better than 92% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | ↑ Improving |
| 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 Coeur d'Alene Air Quality
What is the air quality in Coeur d'Alene today?
The current AQI in Coeur d'Alene is 33, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Coeur d'Alene getting better or worse?
Air quality in Coeur d'Alene has been improving over the past decade. The median AQI dropped from 29 in 2016 to 24 in 2025.
What is the most common air pollutant in Coeur d'Alene?
PM2.5 is the primary air pollutant in Coeur d'Alene, 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 Coeur d'Alene have per year?
In 2025, Coeur d'Alene had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 160 good days and 21 moderate days out of 181 days monitored.
What air quality grade does Coeur d'Alene receive?
Coeur d'Alene receives an air quality grade of A+, placing it better than 92% of US cities. This grade is based on a median AQI of 24 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 92% of US cities
Nearby Cities
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National Rankings
See how Coeur d'Alene compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Coeur d'Alene
Based on your area's air quality (median AQI: 24), we recommend these air purifiers to help protect your health indoors.
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Molekule Air Pro
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