What is the air quality in Pine County, Minnesota?

EPA monitors reported only 69 days for Pine County in 2025, below the 100-day floor used for annual conclusions. Within that limited sample, the median AQI was 23 and 65 days were rated Good; this does not describe the full year.

What is the main pollutant in Pine County?

The primary pollutant in Pine County is Fine Particles (PM2.5), which was the main AQI driver on 69 days (100% of monitored days). Penetrates deep into lungs and bloodstream. Linked to heart disease and premature death.

How many unhealthy air days does Pine County have?

Among 69 reported days in 2025, 0 reached Unhealthy or worse. Because the record is below 100 monitored days, that count cannot establish how many unhealthy days occurred across the full year.

Is the air quality in Pine County getting better or worse?

Insufficient trend data is available for Pine County.

What does AQI 23 mean for health?

The median of the 69 reported days was AQI 23, in the "Good" category. The limited sample is not enough to assign the county a full-year health grade. See the AQI category guide for day-level meaning and EPA AirNow for current conditions.

How does Pine County compare to other counties in Minnesota?

Pine County is not placed in county comparisons because its 69-day record is below the 100-day comparison floor.

What is the 90th percentile AQI in Pine County?

The 90th percentile AQI for Pine County is 45, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 61 (Moderate).

Minnesota · County air quality · 2025

Pine County, Minnesota

Limited EPA sample: 69 monitored days, below the 100-day floor for a full-year verdict. The figures below describe only those reported days.

Compiled by PlainAirData · August 23, 2026

23
Sample median AQI: 94.2%
Good in sample: 0
Unhealthy in sample: 69
100-day comparison floor

Pine County has only 69 EPA-monitored days in 2025, below the 100-day annual floor

According to the U.S. EPA Air Quality System, Pine County, Minnesota reported 69 monitored days in 2025. That sample is too thin for a full-year air-quality grade or peer ranking. Use the figures only as the reported-day record, and check AirNow for current conditions.

Data source EPA Air Quality System (AQS)

Monitored days: Pine County reported 69 monitored days in 2025, below the 100-day floor: sample-only, not a full-year peer rank.
Sample median AQI: Sample median AQI: 23
Annual floor: Annual floor: 100

Data updated August 2026

Good · 65 d · 94.2%
Moderate · 4 d · 5.8%

How did Pine County's reported sample break down in 2025?

Across 69 monitored days, 65 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 61 (Moderate).

EPA AQS →

Pollutant Breakdown

Days where each pollutant was the primary driver of AQI readings in Pine County.

PM2.5 · 69 days · 100.0%

Sample Coverage and Health Context

Limited sample

Pine County has no annual health grade because only 69 days were reported, below the 100-day floor. The 94.2% Good-day share describes only that sample.

Reported days do not reveal what happened during unmonitored parts of the year, including seasonal smoke, ozone, or inversion periods. Use these values as a description of the available EPA sample only, and check AirNow.gov for current health guidance.

The dominant pollutant is PM2.5, driving AQI on 69 of 69 monitored days.

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by County dataset, 2020–2025 (aqs.epa.gov). For current conditions (not shown here — this page is historical annual data), see EPA AirNow (airnow.gov). See our methodology for how AQI, median, and coverage figures are computed.

Informational only, not professional advice. Data from EPA AQS. See our disclaimer. Spotted a figure that looks wrong? Report a correction.

Source: U.S. EPA Air Quality System (AQS) Annual AQI by county summary files for Pine County, Minnesota · 2020–2025 Accessed 2026-08-23

Download this county's annual AQI row as CSV , with the same EPA fields and denominator shown on this page.

Every figure on PlainAirData is rendered directly from EPA AQS air-quality monitoring data, no number is typed in by an editor. This page draws directly on EPA AQS air-quality monitoring data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.