Stay updated with real-time air quality in Biddeford, Maine 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)
52
Moderate
Biddeford, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.68 μg/m³
0
55
155
255
425
605+
43.61 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
4.17 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Biddeford, Maine
Biddeford, Maine
Scroll To Air Quality MapLoading...
AQI 52
Moderate
9.81μg/m³
PM2.5
51.56μg/m³
PM10
46.34ppb
O3
0.40ppb
SO2
4.78ppb
NO2
0.16ppm
CO
AQI 44
Good
8.48μg/m³
PM2.5
43.87μg/m³
PM10
45.84ppb
O3
0.45ppb
SO2
4.13ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.98μg/m³
PM2.5
23.51μg/m³
PM10
36.63ppb
O3
0.24ppb
SO2
4.60ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.55μg/m³
PM2.5
40.52μg/m³
PM10
35.42ppb
O3
0.38ppb
SO2
3.83ppb
NO2
0.16ppm
CO
AQI 44
Good
8.49μg/m³
PM2.5
46.90μg/m³
PM10
46.00ppb
O3
0.46ppb
SO2
4.17ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.61μg/m³
PM2.5
28.08μg/m³
PM10
35.25ppb
O3
0.31ppb
SO2
4.40ppb
NO2
0.16ppm
CO
Air quality data and pollutant measurements for Maine, 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 Biddeford, Maine is updated every hour.
The worst air quality in Biddeford, Maine in the last 24 hours was observed at 12:00:00 on 2026-06-11.
In the last 24 hrs, the best air quality in Biddeford, Maine was observed at 07:00:00 on 2026-06-11.
The current air quality in Biddeford, Maine is 52, categorized as Moderate based on real-time data.
The most common pollutant in Biddeford, Maine is PM2.5.
If the air quality in Biddeford, Maine is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Biddeford, Maine is 9.796 μg/m3.
The current PM10 concentration at Biddeford, Maine is 50.684 μg/m3.
The current carbon monoxide (CO) concentration at Biddeford, Maine is 0.161 ppm.
The current sulfur dioxide (SO2) concentration at Biddeford, Maine is 0.411 ppb.
The current ozone (O3) concentration at Biddeford, Maine is 43.611 ppm.
The current nitrogen dioxide (NO2) concentration at Biddeford, Maine is 4.17 ppb.
All Rights Reserved © Ambee Inc. 2025