Burlington Air Quality in July
Across 2019–2025, Burlington's July air quality had a median AQI of 43 (Good) over 217 monitored days in the Burlington-South Burlington, VT area. 1.8% of July days (4 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 69.6% of days. The cleanest July on record here was 2022 (median AQI 41, 0 days above 100) and the worst was 2023 (median 50, 2 days above 100, peak AQI 152).
- Good: 65.4%
- Moderate: 32.7%
- Unhealthy for Sensitive Groups: 0.9%
- Unhealthy or worse: 0.9%
Improve Indoor Air Quality
Even with good outdoor air in Burlington, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Burlington in July?
Good on a typical day: median AQI 43 across 2019–2025, with 1.8% of July days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓65.4% of July days were Good (AQI 0–50), 32.7% Moderate (51–100).
- ✓4 days of 217 reached AQI 101+; the July peak was 156.
- ✓Best July: 2022; worst July: 2023.
Frequently asked questions
What is the air quality like in Burlington in July?▾
Across 2019–2025, the median daily AQI in Burlington in July was 43 (Good). 65.4% of days were Good, 32.7% Moderate, and 1.8% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is July a good time for outdoor exercise in Burlington?▾
A typical July day in Burlington sits in the Good range (median AQI 43), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 56 of July days (1.8%) reached AQI 101+ in 2019–2025.
Which pollutant causes Burlington's July air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 69.6% of July days in Burlington. The highest July AQI recorded in 2019–2025 was 156 (Unhealthy), in 2023.
Burlington July air quality, year by year
Burlington July air quality by year (Burlington-South Burlington, VT, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 47 | 0 | 66 | PM2.5 |
| 2020 | 31 | 45 | 0 | 57 | PM2.5 |
| 2021 | 31 | 42 | 1 | 129 | PM2.5 |
| 2022cleanest | 31 | 41 | 0 | 61 | PM2.5 |
| 2023worst | 31 | 50 | 2 | 152 | PM2.5 |
| 2024 | 31 | 41 | 0 | 68 | O3 |
| 2025 | 31 | 43 | 1 | 156 | PM2.5 |
What July air means in Burlington
A typical July day in Burlington sits in the Good range (median AQI 43), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 56 of July days (1.8%) reached AQI 101+ in 2019–2025.
July's median AQI of 43 is above Burlington's whole-year median of 39, making it one of the area's dirtier periods. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so Burlington runs below the national July norm; 1.8% of its July days topped AQI 100 versus 3.6% nationally (below average).
July is part of Burlington's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Burlington
The latest EPA AirNow observation puts Burlington's AQI at 27 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Burlington air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Burlington-South Burlington, VT), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.