EnviroNearby

Fredericksburg City, Virginia air quality history

Daily Air Quality Index summaries from EPA monitors in Fredericksburg City, Virginia, 1980–2017.

68%
Good days in 1981
44
Median daily AQI, 1981
19
Days above 100 in 1981
154
Days with an AQI in 1981 (of 365)

In 1981, EPA reported a daily Air Quality Index (AQI) for Fredericksburg City, Virginia on 154 days. 105 of those days (68%) were in the Good range, and the median daily AQI was 44. That median is higher than the typical monitored county in Virginia (median 40 across 18 counties), and higher than the typical monitored U.S. county (38). The main pollutant was ozone on 154 days.

EPA did not report an AQI for every day of 1981 here (154 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 2017; EPA's files for 2018–2025 contain no row for it, which usually means its monitors stopped reporting.

Years with fewer than 120 monitored days (2012, 2013, 2014, 2015, 2016, 2017…) 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%1980: Good 103 of 164 days1980: Moderate 42 of 164 days1980: Unhealthy for Sensitive Groups 17 of 164 days1980: Unhealthy 2 of 164 days19801981: Good 105 of 154 days1981: Moderate 30 of 154 days1981: Unhealthy for Sensitive Groups 13 of 154 days1981: Unhealthy 5 of 154 days1981: Very Unhealthy 1 of 154 days1989: Good 9 of 9 days1990: Good 59 of 60 days1990: Moderate 1 of 60 days1991: Good 58 of 60 days1991: Moderate 2 of 60 days1992: Good 59 of 59 days19921993: Good 60 of 61 days1993: Moderate 1 of 61 days1994: Good 61 of 61 days1995: Good 59 of 59 days1996: Good 60 of 61 days1996: Moderate 1 of 61 days1997: Good 60 of 61 days1997: Moderate 1 of 61 days19971998: Good 59 of 59 days1999: Good 60 of 60 days2000: Good 58 of 58 days2001: Good 61 of 61 days2002: Good 59 of 59 days20022003: Good 50 of 51 days2003: Moderate 1 of 51 days2004: Good 59 of 59 days2005: Good 58 of 58 days2006: Good 60 of 60 days2007: Good 59 of 59 days20072008: Good 61 of 61 days2009: Good 60 of 60 days2010: Good 58 of 58 days2011: Good 56 of 56 days2012: Good 60 of 60 days20122013: Good 57 of 57 days2014: Good 58 of 58 days2015: Good 57 of 57 days2016: Good 59 of 59 days2017: Good 11 of 11 days2017
  • 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 year0501001501980: 90th percentile AQI 1151981: 90th percentile AQI 1081989: 90th percentile AQI 431990: 90th percentile AQI 341991: 90th percentile AQI 401992: 90th percentile AQI 311993: 90th percentile AQI 331994: 90th percentile AQI 301995: 90th percentile AQI 331996: 90th percentile AQI 291997: 90th percentile AQI 351998: 90th percentile AQI 321999: 90th percentile AQI 302000: 90th percentile AQI 302001: 90th percentile AQI 282002: 90th percentile AQI 262003: 90th percentile AQI 242004: 90th percentile AQI 292005: 90th percentile AQI 302006: 90th percentile AQI 312007: 90th percentile AQI 292008: 90th percentile AQI 252009: 90th percentile AQI 212010: 90th percentile AQI 282011: 90th percentile AQI 212012: 90th percentile AQI 212013: 90th percentile AQI 182014: 90th percentile AQI 172015: 90th percentile AQI 192016: 90th percentile AQI 182017: 90th percentile AQI 121980: Median AQI 441981: Median AQI 441989: Median AQI 171990: Median AQI 191991: Median AQI 191992: Median AQI 181993: Median AQI 171994: Median AQI 151995: Median AQI 181996: Median AQI 151997: Median AQI 161998: Median AQI 161999: Median AQI 162000: Median AQI 152001: Median AQI 112002: Median AQI 142003: Median AQI 142004: Median AQI 152005: Median AQI 182006: Median AQI 172007: Median AQI 152008: Median AQI 142009: Median AQI 142010: Median AQI 152011: Median AQI 162012: Median AQI 132013: Median AQI 112014: Median AQI 112015: Median AQI 112016: Median AQI 112017: Median AQI 71980199219972002200720122017
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 1981

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
Ozone154100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
201711110000071215PM10
2016595900000111820PM10
2015575700000111927PM10
2014585800000111724PM10
2013575700000111827PM10
2012606000000132131PM10
2011565600000162133PM10
2010585800000152842PM10
2009606000000142128PM10
2008616100000142537PM10
2007595900000152946PM10
2006606000000173144PM10
2005585800000183036PM10
2004595900000152944PM10
2003515010000142451PM10
2002595900000142641PM10
2001616100000112835PM10
2000585800000153040PM10
1999606000000163036PM10
1998595900000163248PM10
1997616010000163562PM10
1996616010000152954PM10
1995595900000183349PM10
1994616100000153038PM10
1993616010000173353PM10
1992595900000183139PM10
1991605820000194055PM10
1990605910000193461PM10
19899900000174343PM10
1981154105301351044108201Ozone
1980164103421720044115177Ozone

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 Virginia

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–2017 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem