Stay updated with real-time air quality in Westbrook, 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)
44
Good
Westbrook, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.77 μg/m³
0
55
155
255
425
605+
32.34 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
9.97 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westbrook, Maine
Westbrook, Maine
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AQI 38
Good
7.07μg/m³
PM2.5
28.19μg/m³
PM10
31.24ppb
O3
1.12ppb
SO2
6.02ppb
NO2
0.21ppm
CO
AQI 108
Unhealthy for sensitive groups
20.46μg/m³
PM2.5
168.75μg/m³
PM10
32.59ppb
O3
1.10ppb
SO2
6.10ppb
NO2
0.21ppm
CO
AQI 84
Moderate
17.51μg/m³
PM2.5
122.42μg/m³
PM10
33.93ppb
O3
1.12ppb
SO2
6.05ppb
NO2
0.21ppm
CO
AQI 103
Unhealthy for sensitive groups
19.94μg/m³
PM2.5
159.45μg/m³
PM10
32.92ppb
O3
1.10ppb
SO2
6.10ppb
NO2
0.21ppm
CO
AQI 106
Unhealthy for sensitive groups
20.19μg/m³
PM2.5
165.28μg/m³
PM10
32.71ppb
O3
1.10ppb
SO2
6.06ppb
NO2
0.21ppm
CO
AQI 38
Good
7.07μg/m³
PM2.5
34.15μg/m³
PM10
34.31ppb
O3
1.08ppb
SO2
6.16ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Maine, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Westbrook, Maine is updated every hour for accuracy.
In the past 24 hours, the air quality in Westbrook, Maine was at its worst at 04:00:00 on 2025-12-28.
In the last 24 hours, the best air quality in Westbrook, Maine was observed at 02:00:00 on 2025-12-28.
As of now, the AQI in Westbrook, Maine is 44, indicating Good conditions.
Westbrook, Maine air has the highest levels of PM2.5.
Poor air quality in Westbrook, Maine means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Westbrook, Maine are currently 8.288 μg/m3.
The PM10 concentration in Westbrook, Maine is 29.644 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westbrook, Maine is 0.209 ppm.
Currently, Westbrook, Maine has a sulfur dioxide (SO2) concentration of 1.104 ppb.
The current ozone (O3) level in Westbrook, Maine at the moment is 32.358 ppm.
Nitrogen dioxide (NO2) level in Westbrook, Maine at the moment is 8.513 ppb.
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