Zip Code 91702

📍 Azusa, CA

Toxic Air Emissions Report (2024)

Data Source: EPA TRI (2024) • Updated Nov 2025

5,862.60 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in Azusa, CA released over 5,862.60 lbs of pollutants. The primary source was POLYNT COMPOSITES USA INC. - AZUSA PLANT, which emitted large quantities of Styrene into the local air. Air quality in 91702 is relatively consistent with regional baselines.

Top Polluting Facilities

POLYNT COMPOSITES USA INC. - AZUSA PLANT Cancer Risk

Owned by: POLYNT COMPOSITES USA INC

Styrene released to air

5,406.00 lbs

LBS
POLYNT COMPOSITES USA INC. - AZUSA PLANT

Owned by: POLYNT COMPOSITES USA INC

Maleic anhydride released to air

199.20 lbs

LBS
POLYNT COMPOSITES USA INC. - AZUSA PLANT

Owned by: POLYNT COMPOSITES USA INC

Phthalic anhydride released to air

118.00 lbs

LBS
POLYNT COMPOSITES USA INC. - AZUSA PLANT

Owned by: POLYNT COMPOSITES USA INC

Dicyclopentadiene released to air

96 lbs

LBS
POLYNT COMPOSITES USA INC. - AZUSA PLANT

Owned by: POLYNT COMPOSITES USA INC

Ethylene glycol released to air

43.4 lbs

LBS

Nearby Pollution Sources (< 20 miles)

Anaheim, CA (92807) 19.9 mi away

Heavy Industrial Activity

85,284.00 lbs

Annual Emissions
Rancho Cucamonga, CA (91730) 17.7 mi away

Heavy Industrial Activity

19,623.89 lbs

Annual Emissions
City Of Commerce, CA (90040) 17.0 mi away

Heavy Industrial Activity

16,933.88 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 91706 Report: 91710 Report: 91730 Report: 91731 Report: 91744 Report: 91745

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Protect Your Lungs

Because toxic gases and VOCs were detected in this area (likely from the Styrene), standard filters are not enough. We strongly recommend an Activated Carbon purifier to adsorb these fumes.

View Recommended Carbon Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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