EnviroNearby

Raleigh County, West Virginia air quality history

Daily Air Quality Index summaries from EPA monitors in Raleigh, West Virginia, 1999–2015.

68%
Good days in 2013
40
Median daily AQI, 2013
0
Days above 100 in 2013
120
Days with an AQI in 2013 (of 365)

In 2013, EPA reported a daily Air Quality Index (AQI) for Raleigh, West Virginia on 120 days. 81 of those days (68%) were in the Good range, and the median daily AQI was 40. That median is about the same as the typical monitored county in West Virginia (median 40.5 across 14 counties), and about the same as the typical monitored U.S. county (42). The main pollutant was fine particles (PM2.5) on 120 days.

EPA did not report an AQI for every day of 2013 here (120 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

The most recent year with data for this county is 2015; EPA's files for 2016–2025 contain no row for it, which usually means its monitors stopped reporting.

Years with fewer than 120 monitored days (2007, 2008, 2009, 2011, 2014, 2015…) are shown in the table but left out of comparisons and trend statements.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%1999: Good 35 of 118 days1999: Moderate 80 of 118 days1999: Unhealthy for Sensitive Groups 3 of 118 days19992000: Good 35 of 120 days2000: Moderate 84 of 120 days2000: Unhealthy for Sensitive Groups 1 of 120 days2001: Good 36 of 121 days2001: Moderate 83 of 121 days2001: Unhealthy for Sensitive Groups 2 of 121 days20012002: Good 39 of 119 days2002: Moderate 78 of 119 days2002: Unhealthy for Sensitive Groups 2 of 119 days2003: Good 46 of 116 days2003: Moderate 69 of 116 days2003: Unhealthy for Sensitive Groups 1 of 116 days20032004: Good 42 of 118 days2004: Moderate 76 of 118 days2005: Good 42 of 117 days2005: Moderate 75 of 117 days20052006: Good 52 of 118 days2006: Moderate 65 of 118 days2006: Unhealthy for Sensitive Groups 1 of 118 days2007: Good 42 of 115 days2007: Moderate 72 of 115 days2007: Unhealthy for Sensitive Groups 1 of 115 days20072008: Good 48 of 113 days2008: Moderate 65 of 113 days2009: Good 60 of 113 days2009: Moderate 53 of 113 days20092010: Good 56 of 120 days2010: Moderate 64 of 120 days2011: Good 68 of 116 days2011: Moderate 48 of 116 days20112012: Good 72 of 121 days2012: Moderate 49 of 121 days2013: Good 81 of 120 days2013: Moderate 39 of 120 days20132014: Good 8 of 8 days2015: Good 20 of 25 days2015: Moderate 5 of 25 days2015
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001999: 90th percentile AQI 842000: 90th percentile AQI 782001: 90th percentile AQI 782002: 90th percentile AQI 772003: 90th percentile AQI 742004: 90th percentile AQI 762005: 90th percentile AQI 832006: 90th percentile AQI 752007: 90th percentile AQI 802008: 90th percentile AQI 682009: 90th percentile AQI 622010: 90th percentile AQI 632011: 90th percentile AQI 652012: 90th percentile AQI 592013: 90th percentile AQI 572014: 90th percentile AQI 322015: 90th percentile AQI 521999: Median AQI 562000: Median AQI 572001: Median AQI 562002: Median AQI 552003: Median AQI 542004: Median AQI 552005: Median AQI 552006: Median AQI 532007: Median AQI 552008: Median AQI 532009: Median AQI 482010: Median AQI 522011: Median AQI 452012: Median AQI 442013: Median AQI 402014: Median AQI 242015: Median AQI 32199920012003200520072009201120132015
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2013

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Fine particles (PM2.5)120100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2015252050000325253PM2.5
20148800000243232PM2.5
201312081390000405776PM2.5
201212172490000445968PM2.5
201111668480000456585PM2.5
201012056640000526388PM2.5
200911360530000486271PM2.5
200811348650000536888PM2.5
2007115427210005580122PM2.5
2006118526510005375108PM2.5
200511742750000558394PM2.5
200411842760000557695PM2.5
2003116466910005474113PM2.5
2002119397820005577130PM2.5
2001121368320005678135PM2.5
2000120358410005778102PM2.5
1999118358030005684127PM2.5

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

All monitored counties in West Virginia

Source: U.S. EPA AirData, “Annual AQI by County” files for 1999–2015 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem