Stay updated with real-time air quality in Merced, California 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)
38
Good
Merced, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.00 μg/m³
0
55
155
255
425
605+
14.84 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
9.23 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Merced, California
Merced, California
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AQI 23
Good
1.46μg/m³
PM2.5
11.12μg/m³
PM10
24.66ppb
O3
0.37ppb
SO2
2.95ppb
NO2
0.13ppm
CO
AQI 23
Good
1.49μg/m³
PM2.5
9.62μg/m³
PM10
25.02ppb
O3
0.38ppb
SO2
3.05ppb
NO2
0.13ppm
CO
AQI 23
Good
1.53μg/m³
PM2.5
9.17μg/m³
PM10
25.37ppb
O3
0.39ppb
SO2
2.76ppb
NO2
0.18ppm
CO
AQI 24
Good
0.93μg/m³
PM2.5
9.92μg/m³
PM10
25.85ppb
O3
0.31ppb
SO2
5.11ppb
NO2
0.15ppm
CO
AQI 22
Good
1.01μg/m³
PM2.5
5.92μg/m³
PM10
24.35ppb
O3
0.40ppb
SO2
3.51ppb
NO2
0.17ppm
CO
AQI 22
Good
0.81μg/m³
PM2.5
6.00μg/m³
PM10
24.02ppb
O3
0.40ppb
SO2
3.60ppb
NO2
0.18ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Merced, California are available every hour.
Merced, California experienced its worst air quality at 08:00:00, 2025-10-26.
The best air quality in Merced, California was observed at 02:00:00 on 2025-10-27.
The air quality in Merced, California right now is Good, with an AQI of 23.
In Merced, California, O3 is the most frequently found pollutant.
When air quality in Merced, California is compromised, staying indoors and wearing a mask can reduce health risks.
Merced, California currently has a PM2.5 concentration of 0.9 μg/m3.
Merced, California currently has a PM10 concentration of 4 μg/m3.
The current carbon monoxide (CO) level in Merced, California is 0.128 ppm.
The current sulfur dioxide (SO2) concentration in Merced, California is 0.358 ppb.
Merced, California currently has an ozone (O3) concentration of 25.055 ppm.
The current level of nitrogen dioxide (NO2) in Merced, California is 3.031 ppb.
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