AQSQID: 440070030

Site Name: Near Road

Location: Providence, RI

Reporting: True, Located: True

Current AQI: 25.0

Providence RI, US: 41.829495, -71.417457

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 3 p.m. 40140.0 ppb (10047) 23.4 ppb (22) N/A 17.0 ppb (16) N/A N/A N/A 0.84 ppb (9) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2019, 2 p.m. 20790.0 ppb (5197) 10.2 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.54 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 1 p.m. 39920.0 ppb (9991) 23.2 ppb (21) N/A 17.0 ppb (16) N/A N/A N/A 0.77 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2019, noon 61810.0 ppb (15478) 41.8 ppb (39) N/A 20.0 ppb (19) N/A N/A N/A 0.89 ppb (10) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 21, 2019, 11 a.m. 65850.0 ppb (16490) 45.8 ppb (42) N/A 20.0 ppb (19) N/A N/A N/A 0.85 ppb (9) N/A 9.9 μg/m3 (41) 42.0
 
Sept. 21, 2019, 10 a.m. 48420.0 ppb (12122) 31.2 ppb (29) N/A 17.0 ppb (16) N/A N/A N/A 0.67 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 9 a.m. 38740.0 ppb (9696) 23.3 ppb (22) N/A 15.0 ppb (14) N/A N/A N/A 0.55 ppb (6) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 21, 2019, 8 a.m. 26600.0 ppb (6653) 15.4 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.54 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 4 a.m. 25480.0 ppb (6372) 11.9 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.49 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 3 a.m. 28750.0 ppb (7192) 13.3 ppb (12) N/A 15.0 ppb (14) N/A N/A N/A 0.69 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 2 a.m. 40150.0 ppb (10049) 19.2 ppb (18) N/A 21.0 ppb (19) N/A N/A N/A 0.83 ppb (9) N/A 12.9 μg/m3 (52) 52.0
 
Sept. 21, 2019, 1 a.m. 37030.0 ppb (9267) 18.2 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A 0.94 ppb (10) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, midnight 49130.0 ppb (12300) 27.3 ppb (25) N/A 22.0 ppb (20) N/A N/A N/A 0.93 ppb (10) N/A 13.9 μg/m3 (54) 54.0
 
Sept. 20, 2019, 11 p.m. 50230.0 ppb (12575) 30.5 ppb (28) N/A 20.0 ppb (19) N/A N/A N/A 1.06 ppb (12) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 20, 2019, 10 p.m. 48830.0 ppb (12225) 29.5 ppb (27) N/A 19.0 ppb (18) N/A N/A N/A 0.85 ppb (9) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 20, 2019, 9 p.m. 34840.0 ppb (8718) 22.5 ppb (21) N/A 12.0 ppb (11) N/A N/A N/A 0.64 ppb (7) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 20, 2019, 8 p.m. 45640.0 ppb (11425) 28.4 ppb (26) N/A 17.0 ppb (16) N/A N/A N/A 0.66 ppb (7) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 20, 2019, 7 p.m. 48360.0 ppb (12107) 28.9 ppb (27) N/A 19.0 ppb (18) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 6 p.m. 61680.0 ppb (15445) 44.6 ppb (41) N/A 17.0 ppb (16) N/A N/A N/A 0.68 ppb (8) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 1 p.m. 89290.0 ppb (22365) 65.1 ppb (62) N/A 24.0 ppb (22) N/A N/A N/A 0.69 ppb (8) N/A 10.0 μg/m3 (42) 62.0
 
Sept. 20, 2019, noon 118.5 ppb (103) 94.0 ppb (93) N/A 24.0 ppb (22) N/A N/A N/A 0.92 ppb (10) N/A 15.9 μg/m3 (58) 93.0
 
Sept. 20, 2019, 11 a.m. 146.8 ppb (109) 121.7 ppb (104) N/A 25.0 ppb (23) N/A N/A N/A 1.16 ppb (13) N/A 12.9 μg/m3 (52) 104.0
 
Sept. 20, 2019, 10 a.m. 145.8 ppb (109) 119.0 ppb (103) N/A 27.0 ppb (25) N/A N/A N/A 1.04 ppb (12) N/A 10.9 μg/m3 (45) 103.0
 
Sept. 20, 2019, 9 a.m. 120.8 ppb (104) 101.2 ppb (100) N/A 20.0 ppb (19) N/A N/A N/A 0.83 ppb (9) N/A 8.9 μg/m3 (37) 100.0
 
Sept. 20, 2019, 8 a.m. 85690.0 ppb (21463) 68.7 ppb (66) N/A 17.0 ppb (16) N/A N/A N/A 0.57 ppb (6) N/A 7.0 μg/m3 (29) 66.0
 
Sept. 20, 2019, 7 a.m. 72300.0 ppb (18107) 52.2 ppb (48) N/A 20.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 48.0
 
Sept. 20, 2019, 6 a.m. 54840.0 ppb (13731) 35.7 ppb (33) N/A 19.0 ppb (18) N/A N/A N/A 0.57 ppb (6) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 20, 2019, 5 a.m. 51080.0 ppb (12788) 34.2 ppb (32) N/A 17.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2019, 4 a.m. 50130.0 ppb (12550) 32.5 ppb (30) N/A 18.0 ppb (17) N/A N/A N/A 0.61 ppb (7) N/A 13.9 μg/m3 (54) 54.0
 
Sept. 20, 2019, 3 a.m. 77350.0 ppb (19372) 51.5 ppb (48) N/A 26.0 ppb (24) N/A N/A N/A 1.02 ppb (11) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2019, 2 a.m. 83520.0 ppb (20919) 54.3 ppb (50) N/A 29.0 ppb (27) N/A N/A N/A 1.23 ppb (14) N/A 15.9 μg/m3 (58) 58.0
 
Sept. 20, 2019, 1 a.m. 86750.0 ppb (21728) 55.9 ppb (52) N/A 31.0 ppb (29) N/A N/A N/A 1.14 ppb (13) N/A 14.9 μg/m3 (56) 56.0
 
Sept. 20, 2019, midnight 118.2 ppb (103) 72.7 ppb (70) N/A 45.0 ppb (42) N/A N/A N/A 1.33 ppb (15) N/A 12.9 μg/m3 (52) 70.0
 
Sept. 19, 2019, 11 p.m. 102.6 ppb (100) 62.7 ppb (59) N/A 40.0 ppb (37) N/A N/A N/A 1.15 ppb (13) N/A 4.9 μg/m3 (20) 59.0
 
Sept. 19, 2019, 10 p.m. 83820.0 ppb (20994) 52.4 ppb (49) N/A 31.0 ppb (29) N/A N/A N/A 0.89 ppb (10) N/A 4.0 μg/m3 (17) 49.0
 
Sept. 19, 2019, 9 p.m. 67570.0 ppb (16921) 44.4 ppb (41) N/A 23.0 ppb (21) N/A N/A N/A 0.79 ppb (9) N/A 6.0 μg/m3 (25) 41.0
 
Sept. 19, 2019, 8 p.m. 55530.0 ppb (13904) 36.5 ppb (34) N/A 19.0 ppb (18) N/A N/A N/A 0.68 ppb (8) N/A 6.0 μg/m3 (25) 34.0
 
Sept. 19, 2019, 7 p.m. 57410.0 ppb (14375) 35.5 ppb (33) N/A 22.0 ppb (20) N/A N/A N/A 0.69 ppb (8) N/A 5.9 μg/m3 (25) 33.0
 
Sept. 19, 2019, 6 p.m. 40260.0 ppb (10077) 28.9 ppb (27) N/A 11.0 ppb (10) N/A N/A N/A 0.49 ppb (5) N/A 5.0 μg/m3 (21) 27.0
 
Sept. 19, 2019, 5 p.m. 50770.0 ppb (12711) 33.7 ppb (31) N/A 17.0 ppb (16) N/A N/A N/A 0.45 ppb (5) N/A 4.9 μg/m3 (20) 31.0
 
Sept. 19, 2019, 4 p.m. 65710.0 ppb (16455) 53.1 ppb (49) N/A 13.0 ppb (12) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 49.0
 
Sept. 19, 2019, 3 p.m. 51780.0 ppb (12964) 33.2 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A 0.39 ppb (4) N/A 5.0 μg/m3 (21) 31.0
 
Sept. 19, 2019, 2 p.m. 37300.0 ppb (9335) 23.9 ppb (22) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 1 p.m. 56080.0 ppb (14042) 37.6 ppb (35) N/A 18.0 ppb (17) N/A N/A N/A 0.54 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, noon 49330.0 ppb (12350) 31.2 ppb (29) N/A 18.0 ppb (17) N/A N/A N/A 0.63 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2019, 11 a.m. 121.1 ppb (104) 94.7 ppb (93) N/A 26.0 ppb (24) N/A N/A N/A 0.95 ppb (11) N/A 12.9 μg/m3 (52) 93.0
 
Sept. 19, 2019, 10 a.m. 166.1 ppb (113) 141.6 ppb (108) N/A 24.0 ppb (22) N/A N/A N/A 1.22 ppb (14) N/A 9.0 μg/m3 (38) 108.0
 
Sept. 19, 2019, 9 a.m. 117.4 ppb (103) 98.8 ppb (98) N/A 19.0 ppb (18) N/A N/A N/A 0.83 ppb (9) N/A 8.9 μg/m3 (37) 98.0
 
Sept. 19, 2019, 8 a.m. 90140.0 ppb (22578) 69.7 ppb (67) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 7.0 μg/m3 (29) 67.0
 
Sept. 19, 2019, 7 a.m. 74260.0 ppb (18598) 54.4 ppb (50) N/A 20.0 ppb (19) N/A N/A N/A 0.37 ppb (4) N/A 7.9 μg/m3 (33) 50.0
 
Sept. 19, 2019, 6 a.m. 53820.0 ppb (13475) 33.8 ppb (31) N/A 20.0 ppb (19) N/A N/A N/A 0.44 ppb (5) N/A 5.9 μg/m3 (25) 31.0
 
Sept. 19, 2019, 5 a.m. 45280.0 ppb (11335) 29.3 ppb (27) N/A 16.0 ppb (15) N/A N/A N/A 0.44 ppb (5) N/A 3.0 μg/m3 (12) 27.0
 
Sept. 19, 2019, 4 a.m. 38360.0 ppb (9601) 19.3 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 3 a.m. 51540.0 ppb (12904) 25.8 ppb (24) N/A 26.0 ppb (24) N/A N/A N/A 0.57 ppb (6) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 19, 2019, 2 a.m. 58080.0 ppb (14543) 34.0 ppb (31) N/A 24.0 ppb (22) N/A N/A N/A 0.64 ppb (7) N/A 6.9 μg/m3 (29) 31.0
 
Sept. 19, 2019, 1 a.m. 44190.0 ppb (11062) 21.4 ppb (20) N/A 23.0 ppb (21) N/A N/A N/A 0.57 ppb (6) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2019, midnight 6850.0 ppb (1703) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 11 p.m. 6900.0 ppb (1716) 3.6 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2019, 10 p.m. 8330.0 ppb (2074) 5.3 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 18, 2019, 9 p.m. 9770.0 ppb (2435) 4.3 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
Sept. 18, 2019, 8 p.m. 10600.0 ppb (2643) 5.5 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 18, 2019, 7 p.m. 9320.0 ppb (2322) 5.7 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 6 p.m. 8520.0 ppb (2122) 4.1 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 5 p.m. 11400.0 ppb (2844) 6.4 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 4 p.m. 10690.0 ppb (2666) 7.4 ppb (7) N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 3 p.m. 17950.0 ppb (4485) 11.0 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 2 p.m. 13630.0 ppb (3403) 6.8 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 1 p.m. 37530.0 ppb (9392) 27.6 ppb (26) N/A 10.0 ppb (9) N/A N/A N/A 0.39 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 18, 2019, noon 41740.0 ppb (10448) 23.7 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2019, 11 a.m. 41990.0 ppb (10510) 28.7 ppb (27) N/A 13.0 ppb (12) N/A N/A N/A 0.44 ppb (5) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 18, 2019, 10 a.m. 61430.0 ppb (15382) 42.9 ppb (40) N/A 18.0 ppb (17) N/A N/A N/A 0.59 ppb (7) N/A 4.0 μg/m3 (17) 40.0
 
Sept. 18, 2019, 9 a.m. 23640.0 ppb (5911) 13.3 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A 0.31 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 18, 2019, 8 a.m. 31420.0 ppb (7861) 20.9 ppb (19) N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 19.0
 
Sept. 18, 2019, 7 a.m. 25760.0 ppb (6443) 17.7 ppb (16) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, 6 a.m. 31210.0 ppb (7809) 19.1 ppb (18) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 5 a.m. 31500.0 ppb (7881) 22.1 ppb (20) N/A 9.0 ppb (8) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 4 a.m. 27460.0 ppb (6869) 18.7 ppb (17) N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 18, 2019, 3 a.m. 5490.0 ppb (1362) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 18, 2019, 2 a.m. 6050.0 ppb (1503) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2019, 1 a.m. 18210.0 ppb (4550) 11.3 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2019, midnight 13630.0 ppb (3403) 7.4 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2019, 11 p.m. 11920.0 ppb (2974) 7.5 ppb (7) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 10 p.m. 8930.0 ppb (2225) 5.2 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 3.9 μg/m3 (16) 16.0
 
Sept. 17, 2019, 9 p.m. 8350.0 ppb (2079) 4.9 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 17, 2019, 8 p.m. 10380.0 ppb (2588) 7.6 ppb (7) N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) N/A 2.9 μg/m3 (12) 12.0
 
Sept. 17, 2019, 7 p.m. 20100.0 ppb (5024) 12.3 ppb (11) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 2.7 μg/m3 (11) 11.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 4 p.m. 39040.0 ppb (9771) 25.9 ppb (24) N/A 13.0 ppb (12) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 3 p.m. 40860.0 ppb (10227) 30.1 ppb (28) N/A 11.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 5.9 μg/m3 (25) 28.0
 
Sept. 17, 2019, 2 p.m. 41040.0 ppb (10272) 25.5 ppb (24) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 5.0 μg/m3 (21) 24.0
 
Sept. 17, 2019, 1 p.m. 77070.0 ppb (19302) 53.4 ppb (49) N/A 24.0 ppb (22) N/A N/A N/A 0.58 ppb (6) N/A 7.0 μg/m3 (29) 49.0
 
Sept. 17, 2019, noon 73230.0 ppb (18340) 52.2 ppb (48) N/A 21.0 ppb (19) N/A N/A N/A 0.62 ppb (7) N/A 10.0 μg/m3 (42) 48.0
 
Sept. 17, 2019, 11 a.m. 101.0 ppb (100) 80.7 ppb (78) N/A 20.0 ppb (19) N/A N/A N/A 0.89 ppb (10) N/A 9.9 μg/m3 (41) 78.0
 
Sept. 17, 2019, 10 a.m. 105.7 ppb (101) 76.7 ppb (74) N/A 29.0 ppb (27) N/A N/A N/A 0.89 ppb (10) N/A 6.9 μg/m3 (29) 74.0
 
Sept. 17, 2019, 9 a.m. 85410.0 ppb (21392) 62.0 ppb (59) N/A 23.0 ppb (21) N/A N/A N/A 0.71 ppb (8) N/A 4.0 μg/m3 (17) 59.0
 
Sept. 17, 2019, 8 a.m. 57570.0 ppb (14415) 42.3 ppb (39) N/A 15.0 ppb (14) N/A N/A N/A 0.46 ppb (5) N/A 6.0 μg/m3 (25) 39.0
 
Sept. 17, 2019, 7 a.m. 42900.0 ppb (10738) 28.8 ppb (27) N/A 14.0 ppb (13) N/A N/A N/A 0.28 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 6 a.m. 39500.0 ppb (9886) 24.9 ppb (23) N/A 15.0 ppb (14) N/A N/A N/A 0.27 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2019, 5 a.m. 53890.0 ppb (13493) 36.3 ppb (34) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 34.0
 
Sept. 17, 2019, 4 a.m. 44940.0 ppb (11250) 34.8 ppb (32) N/A 10.0 ppb (9) N/A N/A N/A 0.42 ppb (5) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 17, 2019, 3 a.m. 43420.0 ppb (10869) 25.8 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A 0.62 ppb (7) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 17, 2019, 2 a.m. 46370.0 ppb (11608) 27.4 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.71 ppb (8) N/A 4.0 μg/m3 (17) 25.0
 
Sept. 17, 2019, 1 a.m. 34960.0 ppb (8748) 16.6 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.51 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, midnight 43300.0 ppb (10839) 24.4 ppb (23) N/A 19.0 ppb (18) N/A N/A N/A 0.62 ppb (7) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 16, 2019, 11 p.m. 63450.0 ppb (15889) 37.8 ppb (35) N/A 26.0 ppb (24) N/A N/A N/A 0.9 ppb (10) N/A 3.0 μg/m3 (12) 35.0
 
Sept. 16, 2019, 10 p.m. 50600.0 ppb (12668) 34.0 ppb (31) N/A 17.0 ppb (16) N/A N/A N/A 0.69 ppb (8) N/A 5.0 μg/m3 (21) 31.0
 
Sept. 16, 2019, 9 p.m. 48140.0 ppb (12052) 33.8 ppb (31) N/A 14.0 ppb (13) N/A N/A N/A 0.68 ppb (8) N/A 6.9 μg/m3 (29) 31.0
 
Sept. 16, 2019, 8 p.m. 52350.0 ppb (13107) 33.2 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 16, 2019, 7 p.m. 51300.0 ppb (12844) 36.4 ppb (34) N/A 15.0 ppb (14) N/A N/A N/A 0.61 ppb (7) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 6 p.m. 57950.0 ppb (14510) 41.0 ppb (38) N/A 17.0 ppb (16) N/A N/A N/A 0.58 ppb (6) N/A 8.0 μg/m3 (33) 38.0
 
Sept. 16, 2019, 5 p.m. 55820.0 ppb (13976) 40.5 ppb (38) N/A 15.0 ppb (14) N/A N/A N/A 0.53 ppb (6) N/A 8.0 μg/m3 (33) 38.0
 
Sept. 16, 2019, 4 p.m. 50400.0 ppb (12618) 36.3 ppb (34) N/A 14.0 ppb (13) N/A N/A N/A 0.54 ppb (6) N/A 7.9 μg/m3 (33) 34.0
 
Sept. 16, 2019, 3 p.m. 52760.0 ppb (13210) 35.0 ppb (32) N/A 18.0 ppb (17) N/A N/A N/A 0.51 ppb (6) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 16, 2019, 2 p.m. 47760.0 ppb (11956) 36.3 ppb (34) N/A 11.0 ppb (10) N/A N/A N/A 0.48 ppb (5) N/A 8.0 μg/m3 (33) 34.0
 
Sept. 16, 2019, 1 p.m. 54680.0 ppb (13691) 36.7 ppb (34) N/A 18.0 ppb (17) N/A N/A N/A 0.48 ppb (5) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2019, noon 58500.0 ppb (14648) 40.5 ppb (38) N/A 18.0 ppb (17) N/A N/A N/A 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 11 a.m. 68840.0 ppb (17240) 42.2 ppb (39) N/A 27.0 ppb (25) N/A N/A N/A 0.66 ppb (7) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2019, 10 a.m. 79830.0 ppb (19994) 63.0 ppb (60) N/A 17.0 ppb (16) N/A N/A N/A 0.81 ppb (9) N/A 8.9 μg/m3 (37) 60.0
 
Sept. 16, 2019, 9 a.m. 73180.0 ppb (18327) 54.7 ppb (51) N/A 19.0 ppb (18) N/A N/A N/A 0.65 ppb (7) N/A 7.9 μg/m3 (33) 51.0
 
Sept. 16, 2019, 8 a.m. 46900.0 ppb (11741) 32.5 ppb (30) N/A 14.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 30.0
 
Sept. 16, 2019, 7 a.m. 42550.0 ppb (10651) 28.8 ppb (27) N/A 14.0 ppb (13) N/A N/A N/A 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 4 a.m. 35290.0 ppb (8831) 17.8 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 3 a.m. 38040.0 ppb (9520) 22.7 ppb (21) N/A 15.0 ppb (14) N/A N/A N/A 0.68 ppb (8) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2019, 2 a.m. 37890.0 ppb (9483) 19.2 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.68 ppb (8) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 16, 2019, 1 a.m. 41870.0 ppb (10480) 21.1 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.71 ppb (8) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, midnight 49370.0 ppb (12360) 24.8 ppb (23) N/A 25.0 ppb (23) N/A N/A N/A 0.81 ppb (9) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 15, 2019, 11 p.m. 49580.0 ppb (12413) 27.6 ppb (26) N/A 22.0 ppb (20) N/A N/A N/A 0.82 ppb (9) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 15, 2019, 10 p.m. 44290.0 ppb (11087) 24.2 ppb (22) N/A 20.0 ppb (19) N/A N/A N/A 0.72 ppb (8) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 9 p.m. 35800.0 ppb (8959) 20.6 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.65 ppb (7) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2019, 8 p.m. 25490.0 ppb (6375) 15.8 ppb (15) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 7 p.m. 26880.0 ppb (6723) 17.9 ppb (17) N/A 9.0 ppb (8) N/A N/A N/A 0.61 ppb (7) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2019, 6 p.m. 32460.0 ppb (8122) 21.5 ppb (20) N/A 11.0 ppb (10) N/A N/A N/A 0.6 ppb (7) N/A 3.0 μg/m3 (12) 20.0
 
Sept. 15, 2019, 5 p.m. 35520.0 ppb (8889) 22.6 ppb (21) N/A 13.0 ppb (12) N/A N/A N/A 0.62 ppb (7) N/A 4.0 μg/m3 (17) 21.0
 
Sept. 15, 2019, 4 p.m. 30910.0 ppb (7733) 21.6 ppb (20) N/A 9.0 ppb (8) N/A N/A N/A 0.6 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 3 p.m. 29140.0 ppb (7290) 19.8 ppb (18) N/A 9.0 ppb (8) N/A N/A N/A 0.67 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 2 p.m. 31170.0 ppb (7798) 22.9 ppb (21) N/A 8.0 ppb (7) N/A N/A N/A 0.55 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 1 p.m. 31930.0 ppb (7989) 23.6 ppb (22) N/A 8.0 ppb (7) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, noon 31370.0 ppb (7849) 20.6 ppb (19) N/A 11.0 ppb (10) N/A N/A N/A 0.66 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 11 a.m. 30460.0 ppb (7621) 20.7 ppb (19) N/A 10.0 ppb (9) N/A N/A N/A 0.59 ppb (7) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 15, 2019, 10 a.m. 22710.0 ppb (5678) 13.5 ppb (12) N/A 9.0 ppb (8) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 9 a.m. 17620.0 ppb (4403) 8.3 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 8 a.m. 21850.0 ppb (5463) 9.4 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 7 a.m. 25640.0 ppb (6413) 11.6 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.57 ppb (6) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 15, 2019, 6 a.m. 30560.0 ppb (7646) 16.5 ppb (15) N/A 14.0 ppb (13) N/A N/A N/A 0.91 ppb (10) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 15, 2019, 5 a.m. 21230.0 ppb (5307) 8.9 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 4 a.m. 23120.0 ppb (5781) 11.6 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 3 a.m. 24230.0 ppb (6059) 12.1 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.58 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 2 a.m. 28840.0 ppb (7215) 14.9 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A 0.7 ppb (8) N/A 12.9 μg/m3 (52) 52.0
 
Sept. 15, 2019, 1 a.m. 29360.0 ppb (7345) 14.4 ppb (13) N/A 15.0 ppb (14) N/A N/A N/A 0.67 ppb (7) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 15, 2019, midnight 33840.0 ppb (8468) 16.3 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 11 p.m. 26100.0 ppb (6528) 12.8 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A 0.62 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 10 p.m. 31640.0 ppb (7916) 17.3 ppb (16) N/A 14.0 ppb (13) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 9 p.m. 35450.0 ppb (8871) 18.3 ppb (17) N/A 17.0 ppb (16) N/A N/A N/A 0.68 ppb (8) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 14, 2019, 8 p.m. 32740.0 ppb (8192) 16.2 ppb (15) N/A 17.0 ppb (16) N/A N/A N/A 0.62 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 7 p.m. 35010.0 ppb (8761) 20.2 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.64 ppb (7) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 14, 2019, 6 p.m. 35050.0 ppb (8771) 21.4 ppb (20) N/A 14.0 ppb (13) N/A N/A N/A 0.54 ppb (6) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 14, 2019, 5 p.m. 32490.0 ppb (8129) 23.0 ppb (21) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 4 p.m. 22280.0 ppb (5570) 14.2 ppb (13) N/A 8.0 ppb (7) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 25.0