Prudhoe Bay, Alaska Air Quality
Prudhoe Bay has a median AQI of 7, earning an air quality grade of A+ — excellent air quality that ranks better than 99% of US cities. Air quality has remained relatively stable over the past decade. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Prudhoe Bay recorded 19 good air quality days (100% of monitored days).
Population: 1,664 • County: North Slope
Current AQI
Quick Facts
| Current AQI | 6 — Good |
| Air Quality Grade | A+ |
| Median AQI (2025) | 7 |
| vs. U.S. Cities | Better than 99% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| 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 Prudhoe Bay is sourced from the SQUAMISH ELEMENTARY monitoring area, located approximately 1647 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 Prudhoe Bay'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
Prudhoe Bay Median AQI by Year
Annual EPA air quality data for Prudhoe Bay — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 7 | 19 | — | 27 | PM2.5 |
| 2024 | 5 | 120 | — | 32 | PM2.5 |
| 2023 | 4 | 120 | — | 77 | PM2.5 |
| 2022 | 7 | 95 | 1 | 170 | PM2.5 |
| 2021 | 5 | 113 | — | 53 | PM2.5 |
| 2020 | 6 | 111 | — | 54 | PM2.5 |
| 2019 | 6 | 108 | — | 69 | 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 Prudhoe Bay Air Quality
What is the air quality in Prudhoe Bay today?
The current AQI in Prudhoe Bay is 6, 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 Prudhoe Bay getting better or worse?
Air quality in Prudhoe Bay has been stable. The median AQI has risen 1 points (from 6 in 2019 to 7 in 2025).
What is the most common air pollutant in Prudhoe Bay?
PM2.5 is the primary air pollutant in Prudhoe Bay, responsible for 19 days (100% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Prudhoe Bay have per year?
In 2025, Prudhoe Bay recorded 100% good air quality days (19 days) out of 19 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 27.
What air quality grade does Prudhoe Bay receive?
Prudhoe Bay receives an air quality grade of A+, placing it better than 99% of US cities. This is based on a median AQI of 7 in 2025, with 19 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 99% of US cities
Nearby Cities
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National Rankings
See how Prudhoe Bay compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Prudhoe Bay
Prudhoe Bay 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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