Air Quality in Modesto, United States

Windy
32.8°C · 20.6% humidity
32.8°
Feels 32.8°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
25 11am
25
25
25 2pm
25
25
25 5pm
25
27
27 8pm
34
54
54 11pm
54
54
54 2am
34
54
54 5am
54
54
54 8am
54
54
AD 728×90

Air Quality Index Trend

46h · 8 stn

Modesto's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Modesto is 1.2× the WHO annual guideline of 5 µg/m³.

20.6%
Humidity
92.9 km/h
Wind NW
1014.0 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
25
6.0 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Modesto?

Temperature & Precipitation

PM2.5 Trend

46h · 8 stations
PM2.56.0 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (2 stations within 25 km)
6.0
Median
11.9
Average
6.0
Low
17.8
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -0.1

What is the 7-day forecast for Modesto?

05-28
30.9° 11.2°
05-29
32.8° 12.1°
05-30
31.2° 17.6°
05-31
34.8° 21.6°
06-01
41.1° 15.4°
06-02
36.1° 14.1°
06-03
35.6° 8.9°
Both models agree Avg diff: 4.4°C

Where are air quality stations near Modesto?

45
Modesto-14th Street, Stanislaus, California
0.4 km PM2.5: 10.8 µg/m³
50
Modesto-14th Street, Stanislaus, California
0.4 km PM2.5: 12.0 µg/m³
69
Turlock-S Minaret Street, Stanislaus, California
22.0 km PM2.5: 20.7 µg/m³
51
Turlock-S Minaret Street, Stanislaus, California
22.0 km PM2.5: 12.1 µg/m³
74
Manteca AMS, San Joaquin, California
28.0 km PM2.5: 23.0 µg/m³

What cities are near Modesto?

31 Ceres 25 Riverbank 21 Ripon 25 Oakdale 63 Turlock 25 Patterson 22 Manteca 21 Lathrop 21 Tracy 19 Stockton
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T21:46 UTC.