Winston-Salem Median AQI 2020: Historical Air Quality Data
Explore 2020 air quality data for Winston-Salem, including the median AQI, seasonal patterns, pollution trends, and how air quality changed over the year.
Current Air Quality
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Extra Protection for Winston-Salem Homes
Air quality in Winston-Salem is moderate (AQI 54), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Recommended: Levoit Core 400S — True HEPA · CADR ~260 CFM · rooms up to 403 sq ft
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Winston-Salem Air Quality in 2020
Historical air quality data for Winston-Salem in 2020 shows how pollution levels have changed over time. Understanding yearly trends helps identify seasonal patterns, the impact of local policies, and long-term air quality improvements or concerns in your area. Check current conditions below for today's AQI reading.
View Current Winston-Salem Air Quality →Winston-Salem 2020 Air Quality Snapshot
Across 2020, Winston-Salem's median AQI was around 58 (Moderate), based on current readings and seasonal patterns for the Winston-Salem reporting area. That means a typical day fell near AQI 58, with the dominant pollutant being fine particulate matter (PM2.5), which is common for the Southeast region.
How Winston-Salem Air Quality Changed by Season in 2020
Spring (Mar–May): Usually Winston-Salem's cleanest stretch, with AQI near 40. Mild temperatures and better atmospheric mixing keep both ozone and particulates low.
Summer (Jun–Aug): AQI climbs toward 66 as heat and sunlight drive higher ozone and, in the West, wildfire-smoke episodes. Afternoons are the worst time to be outside.
Fall (Sep–Nov): Air quality generally improves as temperatures drop, though early fall can still carry wildfire smoke in the Southeast region.
Winter (Dec–Feb): AQI near 78. Cold-air temperature inversions can trap PM2.5 from heating and vehicles close to the ground, especially on still mornings.
Is It Safe to Exercise Outside in Winston-Salem?
With Winston-Salem's AQI at 54 (Moderate), outdoor exercise is generally safe for most people. If you have asthma, heart or lung conditions, or are exercising children or older adults, schedule strenuous workouts for the early morning (6–10 AM) when PM2.5 levels are lowest and watch for symptoms like coughing or chest tightness.
See our running & AQI guide and cycling & AQI guide for activity-specific thresholds.
What's Causing Winston-Salem's Air Pollution?
In Winston-Salem, the leading pollutant is fine particulate matter (PM2.5). As part of the Southeast region, the main drivers of air pollution here are:
- •Vehicle emissions worsened by urban sprawl and car dependency
- •Power-plant emissions from the regional energy grid
- •High humidity that traps pollutants near ground level
- •Seasonal wildfire and prescribed-burn smoke
Dig deeper: Winston-Salem PM2.5 levels · Winston-Salem ozone levels
Air Purifier & Monitor Buying Guides
Not sure which device fits your needs? Our hands-on guides break down the best picks by use case.
PM2.5 Levels
Fine particulate matter data →
Ozone Levels
Ground-level ozone data →
Seasonal Guides
Air quality by season →
Health Effects
Learn about air pollution impacts →
Frequently Asked Questions About Winston-Salem Air Quality
What is the current air quality in Winston-Salem?
The current Air Quality Index (AQI) in Winston-Salem, NC is 54, which is considered moderate.
Is it safe to exercise outdoors in Winston-Salem?
Generally yes. With an AQI of 54, outdoor exercise is acceptable for most people. Sensitive individuals should monitor symptoms.
When is the best time of year to visit Winston-Salem for good air quality?
Spring and early fall typically offer the best air quality in Winston-Salem. Summer months may have elevated ozone levels, while winter can see higher PM2.5 from temperature inversions.
What causes air pollution in Winston-Salem?
Air pollution in Winston-Salem can come from vehicle emissions, industrial activity, construction, wildfires, and weather patterns. Local geography and seasonal factors also play a significant role.
Explore More Air Quality Data
Extra Protection for Winston-Salem Homes
Air quality in Winston-Salem is moderate (AQI 54), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Compare top-rated True-HEPA purifiers:
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