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)
19
Good
Westbrook, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.88 μg/m³
0
55
155
255
425
605+
19.93 ppb
0
55
71
86
201
201+
1.07 ppb
0
36
76
186
605
1005+
5.61 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westbrook, Maine
Westbrook, Maine
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AQI 19
Good
2.77μg/m³
PM2.5
10.39μg/m³
PM10
20.77ppb
O3
0.54ppb
SO2
7.29ppb
NO2
0.26ppm
CO
AQI 17
Good
2.70μg/m³
PM2.5
6.46μg/m³
PM10
18.33ppb
O3
0.14ppb
SO2
7.88ppb
NO2
0.26ppm
CO
AQI 19
Good
2.76μg/m³
PM2.5
10.24μg/m³
PM10
20.58ppb
O3
0.38ppb
SO2
7.35ppb
NO2
0.26ppm
CO
AQI 17
Good
2.70μg/m³
PM2.5
6.19μg/m³
PM10
18.19ppb
O3
0.12ppb
SO2
7.95ppb
NO2
0.26ppm
CO
AQI 17
Good
2.67μg/m³
PM2.5
6.77μg/m³
PM10
18.33ppb
O3
0.18ppb
SO2
7.72ppb
NO2
0.26ppm
CO
AQI 17
Good
2.79μg/m³
PM2.5
11.49μg/m³
PM10
17.84ppb
O3
0.48ppb
SO2
7.09ppb
NO2
0.26ppm
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 03:00:00 on 2026-10-07.
In the last 24 hours, the best air quality in Westbrook, Maine was observed at 10:00:00 on 2026-10-07.
As of now, the AQI in Westbrook, Maine is 22, 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 3.588 μg/m3.
The PM10 concentration in Westbrook, Maine is 18.287 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westbrook, Maine is 0.26 ppm.
Currently, Westbrook, Maine has a sulfur dioxide (SO2) concentration of 0.379 ppb.
The current ozone (O3) level in Westbrook, Maine at the moment is 20.188 ppm.
Nitrogen dioxide (NO2) level in Westbrook, Maine at the moment is 7.282 ppb.
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