Data / Median Air Quality Index (US EPA) / Fredericksburg city

Median Air Quality Index (US EPA) in Fredericksburg city

Median Air Quality Index (US EPA) in Fredericksburg city was 7 in 2017, according to the U.S. Environmental Protection Agency. That is down 4 from 2016.

2017, index7
Change on 2016-4
Series high441980
Series low72017

Next release: Tuesday, 13 July 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Get an email when a new figure is out or this one is revised.
Keep it in a collection in your library.

Median Air Quality Index (US EPA) in Fredericksburg city, 1980 to 2017

0102030405019801992199720022007201220171980: 44 index1981: 44 index1989: 17 index1990: 19 index1991: 19 index1992: 18 index1993: 17 index1994: 15 index1995: 18 index1996: 15 index1997: 16 index1998: 16 index1999: 16 index2000: 15 index2001: 11 index2002: 14 index2003: 14 index2004: 15 index2005: 18 index2006: 17 index2007: 15 index2008: 14 index2009: 14 index2010: 15 index2011: 16 index2012: 13 index2013: 11 index2014: 11 index2015: 11 index2016: 11 index2017: 7 index010203040501980199820171980: 44 index1981: 44 index1989: 17 index1990: 19 index1991: 19 index1992: 18 index1993: 17 index1994: 15 index1995: 18 index1996: 15 index1997: 16 index1998: 16 index1999: 16 index2000: 15 index2001: 11 index2002: 14 index2003: 14 index2004: 15 index2005: 18 index2006: 17 index2007: 15 index2008: 14 index2009: 14 index2010: 15 index2011: 16 index2012: 13 index2013: 11 index2014: 11 index2015: 11 index2016: 11 index2017: 7 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 31 values
Periodindex
20177
201611
201511
201411
201311
201213
201116
201015
200914
200814
200715
200617
200518
200415
200314
200214
200111
200015
199916
199816
199716
199615
199518
199415
199317
199218
199119
199019
198917
198144
198044

Fredericksburg city compared with nearby places

Albemarle County: 40 indexArlington County: 39 indexCaroline County: 39 indexCarroll County: 8 indexCharles City County: 34 indexChesterfield County: 40 indexFairfax County: 49 indexFauquier County: 36 indexFrederick County: 42 indexGiles County: 40 indexHanover County: 39 indexHenrico County: 43 indexLoudoun County: 38 indexMadison County: 41 indexPrince Edward County: 36 indexPrince William County: 34 indexRoanoke County: 42 indexRockbridge County: 38 indexRockingham County: 37 indexStafford County: 38 indexWythe County: 40 indexAlexandria city: 7 indexBristol city: 37 indexFredericksburg city: 7 indexHampton city: 40 indexHopewell city: 10 indexLynchburg city: 35 indexNorfolk city: 19 indexRichmond city: 36 indexSalem city: 37 indexSuffolk city: 40 indexVirginia Beach city: 34 indexWinchester city: 11 index
  • Under 24
  • 24 to 36
  • 36 to 38
  • 38 to 39
  • 39 to 40
  • 40 and over
  • No data
Median Air Quality Index (US EPA), 2017, index. Fredericksburg city is outlined. Same source and period for every area shown. Source: U.S. Environmental Protection Agency. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

Median of the daily Air Quality Index (AQI) values of a US county over the days of the year with an AQI, from the EPA AirData annual summaries.

More on how it is measured
  • The daily county AQI is the highest AQI among the monitors and pollutants reported that day (ozone, PM2.5, PM10, carbon monoxide and nitrogen dioxide).
  • Lower is cleaner: 0 to 50 is good, 51 to 100 moderate and above 100 unhealthy for sensitive groups.

United States counties with air quality monitors only, about 1,000 of some 3,100 in recent years; a county without monitors has no value. The number of days with an AQI differs between counties because some monitors run only in the ozone season.

Report a problem with this figure

How to cite

U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Environmental Protection Agency. (2026). EPA AirData annual AQI by county: median daily AQI (Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017) [Data set]. Retrieved October 12, 2026, from https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual

MLA 9

EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: median daily AQI. Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2017,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017}},
  year = {2026},
  howpublished = {Data set},
  url = {https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download\_files.html\#Annual. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Fredericksburg city, 1980 to 2017
PY  - 2026
DA  - 2026/07/13
PB  - U.S. Environmental Protection Agency
DB  - Invokely
UR  - https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual
L2  - https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/fredericksburg-city-virginia.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

What is the latest median Air Quality Index (US EPA) in Fredericksburg city? Cite the source.
get_value {"indicator":"aqi_median","place":"us-county-51630"}
GET https://invokely.ai/api/v1/value?indicator=aqi_median&place=us-county-51630

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

What is the median Air Quality Index (US EPA) in Fredericksburg city?

Median Air Quality Index (US EPA) in Fredericksburg city was 7 in 2017, according to the U.S. Environmental Protection Agency. That is down 4 from 2016.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: median daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest median Air Quality Index (US EPA) in Fredericksburg city?

44 in 1980, the highest value since 1980 in this series.

Related statistics for Fredericksburg city

All statistics for Fredericksburg city | Fredericksburg city in figures