Inclusion Criteria:  Hypertension arm  Individuals age 18-70 years old with systolic blood pressure between 130-160 mmHg, regardless of medication use Stable hypertension for the past 3 months with no medication changes No planned medication changes for the duration of the study Exposure to outdoor air pollution above a certain threshold (pollution levels will be measured using AirVeda devices) Individuals who sleep in a closed space (such as a bedroom) for minimum of 6 hours/daily. Use of gas (LPG)/electricity for cooking purposes  Diabetes arm  Individuals age 18-70 years old with fasting blood glucose between 126-180 mg/dL, regardless of medication use Stable diabetes for the past 3 months with no medication changes No planned medication changes for the duration of the study Exposure to outdoor air pollution above a certain threshold (pollution levels will be measured using AirVeda devices) Individuals who sleep in a closed space (such as a bedroom) for minimum of 6 hours/daily. Use of gas (LPG)/electricity for cooking purposes  Exclusion Criteria:  Unwilling to participate Unstable blood pressure and/or blood glucose level requiring frequent medication changes Individual suffering from a physical or mental illness that precludes active study participation Current smoker Planned vacation/absence from the study site Patients with life expectancy < 12 months Pregnant patients