Jefferson County Air Quality Index & Realtime Air Pollution
Primary Air Pollutants Jefferson County (Kentucky)
Hourly forecast Jefferson County (Kentucky)
Health Recommendations for Jefferson County Residents
Based on current air quality: Good · AQI 42
UV Index
3.75
Moderate
Use protection if you’re out for extended periods.
Wind
15.8 km/h
Moderate wind — noticeable and steady.
Historical AQI Data Jefferson County (Kentucky)
United States Major Cities AQI Overview
New York
69
Temp.
24.7°C
Hum.
89%
Los Angeles
70
Temp.
23.1°C
Hum.
73%
Chicago
26
Temp.
26.5°C
Hum.
74%
Houston
58
Temp.
27.1°C
Hum.
90%
Phoenix
58
Temp.
29.5°C
Hum.
56%
San Francisco
48
Temp.
18.3°C
Hum.
78%
Seattle
81
Temp.
19°C
Hum.
75%
Denver
27
Temp.
23.1°C
Hum.
53%
Philadelphia
31
Temp.
27.2°C
Hum.
84%
San Antonio
52
Temp.
25.5°C
Hum.
88%
Dallas
45
Temp.
32.2°C
Hum.
54%
Atlanta
43
Temp.
26.7°C
Hum.
83%
Most Polluted Cities by AQI United States
Explore live air quality data for the most polluted cities in the country.
| Rank | City | AQI | AQI Status | Standard Value | Notify |
|---|---|---|---|---|---|
| 1 | Detroit, Michigan | 91 | Moderate | 6x above Standard | |
| 2 | Charleston, West Virginia | 89 | Moderate | 6x above Standard | |
| 3 | Grand Rapids, Michigan | 88 | Moderate | 6x above Standard | |
| 4 | Lansing, Michigan | 88 | Moderate | 6x above Standard | |
| 5 | Ann Arbor, Michigan | 87 | Moderate | 6x above Standard | |
| 6 | Cleveland, Ohio | 84 | Moderate | 6x above Standard | |
| 7 | Cincinnati, Ohio | 81 | Moderate | 5x above Standard | |
| 8 | Toledo, Ohio | 80 | Moderate | 5x above Standard | |
| 9 | Columbus, Ohio | 79 | Moderate | 5x above Standard | |
| 10 | Louisville, Kentucky | 77 | Moderate | 5x above Standard |
Health Advice For People Living in Jefferson County
per day
Breathing the air in this location is equivalent to smoking 0.5 cigarettes a day.
Prevent Health Problems: Understand Your Risks
Jefferson County · Current air quality: Good · AQI 42
Headaches
Risk of Headaches symptoms is Low when AQI of Jefferson County is Good (0-50).
Potential indicators include: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.
- Prefer indoor, filtered air when the AQI is elevated.
- Drink water and pause from screen time or strong light if you are migraine-prone.
- If you Consider using prescribed migraine meds, Store them accessible.
- Avoid do intense outdoor exercise during poor AQI periods.
- Try not to ignore worsening issues that feel unusual for you.
Disclaimer: The health risks mentioned above are precautionary recommendations based on current AQI levels. While you may not experience immediate effects, prolonged exposure to air pollution can lead to these health issues over time. This is not medical advice. Please consult a clinician if you experience severe, unusual, or worsening symptoms.
Jefferson County's Nearby Cities AQI
Explore nearby city AQI pages around Jefferson County.
Air Quality FAQs at Jefferson County, Kentucky
Frequently Asked Questions
About Air Quality
The current real-time AQI (US) level in Jefferson County, Kentucky is 42 (Good). This was last updated recently.
The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.
The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.
The AQI (US) levels in Jefferson County, Kentucky have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.
Current AQI (US) levels are good for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.