Stay updated with real-time air quality in Holyoke, Massachusetts featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
27
Good
Holyoke, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.08 μg/m³
0
55
155
255
425
605+
22.93 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
1.71 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Holyoke, Massachusetts
Holyoke, Massachusetts
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AQI 33
Good
6.10μg/m³
PM2.5
26.87μg/m³
PM10
24.36ppb
O3
0.32ppb
SO2
2.57ppb
NO2
0.18ppm
CO
AQI 27
Good
5.00μg/m³
PM2.5
21.40μg/m³
PM10
22.42ppb
O3
0.33ppb
SO2
1.43ppb
NO2
0.18ppm
CO
AQI 27
Good
4.93μg/m³
PM2.5
18.87μg/m³
PM10
23.24ppb
O3
0.34ppb
SO2
2.37ppb
NO2
0.18ppm
CO
AQI 33
Good
6.39μg/m³
PM2.5
28.39μg/m³
PM10
24.87ppb
O3
0.32ppb
SO2
2.89ppb
NO2
0.18ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
28.53μg/m³
PM10
24.91ppb
O3
0.32ppb
SO2
2.92ppb
NO2
0.18ppm
CO
AQI 27
Good
5.17μg/m³
PM2.5
21.05μg/m³
PM10
23.03ppb
O3
0.31ppb
SO2
1.89ppb
NO2
0.19ppm
CO
Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Holyoke, Massachusetts is updated every hour.
The worst air quality in Holyoke, Massachusetts in the last 24 hours was observed at 09:00:00 on 2026-08-13.
In the last 24 hrs, the best air quality in Holyoke, Massachusetts was observed at 05:00:00 on 2026-08-14.
The current air quality in Holyoke, Massachusetts is 27, categorized as Good based on real-time data.
The most common pollutant in Holyoke, Massachusetts is PM2.5.
If the air quality in Holyoke, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Holyoke, Massachusetts is 5.3 μg/m3.
The current PM10 concentration at Holyoke, Massachusetts is 23.076 μg/m3.
The current carbon monoxide (CO) concentration at Holyoke, Massachusetts is 0.183 ppm.
The current sulfur dioxide (SO2) concentration at Holyoke, Massachusetts is 0.327 ppb.
The current ozone (O3) concentration at Holyoke, Massachusetts is 22.928 ppm.
The current nitrogen dioxide (NO2) concentration at Holyoke, Massachusetts is 1.708 ppb.
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